CN102378820B - Adhesive adding method, device for adding binder, kneading machine and compounding process - Google Patents

Abstract

It is an object of the present invention to provide in the granulation of iron ore material, can equably be added in iron ore material adhesive, and can in high precision and promptly control the concentration of adhesive and adhesive adding method, the adding set of addition.Adhesive adding method of the invention is characterised by：The mixing nozzle (70) that the adhesive and water that are supplied respectively to by adhesive supply pipe (63) and feed pipe (66) are mixed will be arranged near the raw material throw-in part (55) of kneading machine (50), from mixing nozzle (70), to putting into the binder aqueous solution that the sprinkling of the iron ore material in the raw material throw-in part (55) of kneading machine (50) is mixed by adhesive and water.

Description

Adhesive adding method, device for adding binder, kneading machine and compounding process

Technical field

The present invention relates to can equably add adhesive to iron ore material and can promptly control adhesive in high precision Concentration and the adhesive adding method of addition, device for adding binder, kneading machine and compounding process.

Background technology

In the granulation of iron ore material, by adhesive stoste (also referred to as granulating inorganic agent) and moisture adjustment water (hereinafter referred to as adding water) is kneaded and is granulated after being added in iron ore material.In granulating working procedure, granules are being improved In quality, it is important that control in high precision and promptly the concentration of amount of binder and addition water, i.e. binder aqueous solution and add Dosage, and binder aqueous solution is equably added to iron ore material.

For example, in patent document 1, it is proposed that in the granulation of the raw materials for sintering containing iron ore, by using difference Watering mechanism in the comminutors such as trommel mixer spray adhesive and water, be dispersed in making uniform moisture in raw material entirety.

Be mixed with containing particle diameter from the coarse grain of several mm or so to less than 250 μm of micro mist iron ore material state When being granulated, it is important that by the adhesive played a role as dispersant, the micro mist in raw material is suitably disperseed, make micro- Powder is attached on the surface of the coarse grain as nuclear particle.So, when the granulation of the iron ore material of the micro mist, In order to improve the quality of granules, as the last stage using comminutor manufacture granules, will be for kneading iron ore material Kneading machine is located at the leading portion of comminutor, it is necessary to the binder aqueous solution of normal concentration will be adjusted to equably in the kneading machine It is added in iron ore material, is fully kneaded.

In patent document 2, in the granulation for carrying out the iron ore material based on micro mist, in order to obtain as target Size distribution, it is proposed that first with kneading machine to the iron ore of particle that the granularity containing more than 60 mass % is less than 250 μm Stone raw material is kneaded, and manufacture particle mean size is the mixture of more than 3mm and below 7mm, then, with trommel mixer (granulation Machine) mixture is granulated, manufacture granularity is the method for more than 3mm and the granules of below 10mm.

Generally, when binder aqueous solution is added by kneading machine, for example, as described in Patent Document 2, using from leaf Main part supply adhesive and the water of the revolving kneading machine of piece, the method that binder aqueous solution is added in the kneading machine.

Additionally, in patent document 3, in order to granulation inorganic agent is uniformly mixed in into iron ore material in comminutor In, it is proposed that granulation inorganic agent and addition water are pre-mixed, the mixed liquor is sprayed in comminutor, mixed with iron ore material Method.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2007-113087 publications

Patent document 2：Japanese Unexamined Patent Publication 2007-247020 publications

Patent document 3：Japanese Unexamined Patent Publication 2004-137595 publications

Patent document 4：Japanese Unexamined Patent Application Publication 2003-515440 publications

The content of the invention

Problems to be solved by the invention

But, in the adhesive adding method described in above-mentioned patent document 2, as shown in figure 1, due in rotating vanes Kneading machine 1 the inner peripheral surface of main part 2 and stirring vane 3 between there is gap, thus inner peripheral surface in main part 2 adheres to former Material, forms adhesion coating 4 (i.e. raw material from clad (self ling)).Therefore, via the pipe arrangement 5 being connected on main part 2, Hindering for above-mentioned adhesion coating 4 is subject to from the binder aqueous solution 7 of the addition spraying of nozzle 6, thus can not be sprayed directly on mixed In raw material in refining, and propagated along the inner peripheral surface of main part 2 and wandered, entered from the crack of adhesion coating 4, partly added in original In material.In this case, hardly possible is trapped in the stipulated time in kneading machine 1 in raw material, equably adds binder aqueous solution 7, adhesive uneven presence in raw material, binder concn generation is deep or light, thus can not obtain being adapted to the mixing of granulation conditions Thing.

Additionally, holdup time of the raw material in kneading machine can be asked by the raw material accumulating amount in its input amount and kneading machine Go out, but according to the relation of plant bulk, the difficult time for being defined as growing very much by the holdup time, even if generally long is also generally 3 points The short time of clock or so.Accordingly, it would be desirable within the short time, make the binder aqueous solution of even concentration be uniformly mixed in original In material entirety, when binder aqueous solution is added by kneading machine, it is necessary to the binder aqueous solution is controlled into the concentration in regulation.

As ensure from the above point of view regulation binder concn method, for example, it is contemplated that use following methods： In the addition of the binder aqueous solution in kneading machine inorganic agent is granulated described in application patent document 3 to comminutor addition The composition of device, as shown in Fig. 2 by position (hereinafter referred to as point of addition) separation in the addition nozzle 6 from kneading machine 1 The static mixer 10 that position arranges, adhesive stoste and addition water are mixed, by 1 pipe arrangement 5 that binder aqueous solution is defeated It is sent to the point of addition of kneading machine 1.

In the method, flow control valve 11 and electromagnetic flowmeter 12 can be used, control is along gluing that pipe arrangement 13 flows The flow of mixture stoste, while the addition water flowed along pipe arrangement 16 using flow control valve 14 and electromagnetic flowmeter 15, control Flow, from there through static mixer 10 mixing both, generate normal concentration binder aqueous solution, should with 1 pipe arrangement 5 Binder aqueous solution is supplied in kneading machine 1.

But, being taken care of in outdoor iron ore material more, because weather influence iron ore material contained by moisture (hereinafter referred to as Raw material moisture) frequently change.Additionally, the situation that the match ratio of various iron ore materials changes is also more, according to the cooperation Than raw material moisture changes.For these reasons, the moisture for putting into the iron ore material in kneading machine 1 frequently changes, because And it is unstable.Therefore, even if generating the binder aqueous solution of normal concentration by above-mentioned static mixer 10, and it is added to mixing In machine 1, practical function changes in the binder concn of raw material also according to raw material moisture.So, seeking always according to original The addition that binder concn and binder aqueous solution are accurately controlled containing moisture of material.That is, adhesive is water-soluble Concentration and the addition needs of liquid are corresponding with the change of raw material moisture, accurately control the solid constituent in adhesive stoste Quality and the quality by the moisture in adhesive stoste and addition water total biodiversity for constituting of quality this two side Face.

However, in the method for the static mixer 10 of above-mentioned use Fig. 2, in raw material moisture before changing by static state Mixer 10 mixing binder aqueous solution remain in pipe arrangement 5, even if thus after the change of raw material moisture control pipe arrangement 13, 16 flow, it is also difficult to which accurately control is added to the concentration and addition of the adhesive in raw material.

For example, as be described hereinafter, in the case where the raw material moisture in putting into kneading machine 1 declines, remaining in viscous in pipe arrangement 5 The concentration of the mixture aqueous solution compared with the optimum condition of the raw material moisture after the decline with becoming higher.That is, , it is necessary to relatively increase addition water in the case that raw material moisture declines, thus drop is needed compared with before the decline of raw material moisture The concentration of the low adhesive aqueous solution in itself, but can not be adjusted to remaining in the binder aqueous solution in pipe arrangement 5, and adhesive is dense Degree is still high concentration.Therefore, if the remaining binder aqueous solution be added in raw material, enter using kneading machine 1 During row mixing, binder concn is too high, and mixture is presented tacky argillaceous, and the state that formation can not be granulated (is hereinafter referred to as starched Material state).On the other hand, in the case where raw material moisture rises, the concentration and phase of the binder aqueous solution in pipe arrangement 5 are remained in Being compared for the optimum condition of the raw material moisture after the rising becomes relatively low.Therefore, in mixing, binder concn is too low, it is impossible to Obtain good granule size and intensity.

Particularly, because binder concn is too high make mixture present slurry form in the case of, can not carry out sometimes , there is the significant trouble that manufacturing line stops in the conveying of itself from kneading machine to comminutor.Passed through in the present application person In the example gone through, following examples occur multiple：Even if in the case where raw water score value somewhat reduces by 0.5 mass %, from mixing The raw material that machine 1 is transferred out also is in slurry form, it is impossible to carry out later conveying, and production line stops, it has to manually clearing out this Raw material.So, the binder concn for being caused by the binder aqueous solution in the pipe arrangement 5 in the downstream for remaining in static mixer 10 Control postpone turn into important problem.

To solve the above problems, as shown in Figure 3, it is contemplated that convey adhesive stoste and addition water respectively with pipe arrangement 13,16, Make static mixer close to the method for the vicinity of the point of addition of kneading machine 1.But, even if using the method for the Fig. 3, if Change the adhesive stoste amount mixed by static mixer 10 and addition water, then it is interior with rule respectively along pipe arrangement 13,16 Adhesive stoste and addition water Xiang Hu Gan Wataru in static mixer 10 that constant-pressure conveying comes, both pressure balance collapses, Thus there is a problem of to stabilisation time consuming.Therefore, in the side using the static mixer 10 shown in Fig. 2 and Fig. 3 In method, even reply raw material moisture can not instantaneously carry out flow adjustment, to control with the situation of 0.5 mass % slight variations Generation time postpones untill stability of flow processed, thus is likely to occur above-mentioned significant trouble.So, employ think in order to Obtain the binder aqueous solution of normal concentration and have to use for the method for static mixer 10, for the change with raw material moisture The responsiveness for moving the change of corresponding binder concn is poor, thus the concentration of adhesive and addition to being added in raw material enters Accurately promptly control is extremely difficult to row.

From situation described above, in the past in order to improve the granulation in granulating working procedure, in advance to being with micro mist In the compounding procedure that the iron ore material of main body is kneaded, expect adhesive can be equably added to the raw material always In and can according to the feedstock transportation amount and raw material moisture at every moment changing, accurately promptly control added it is viscous The concentration of mixture and the method for addition.

Thus, the present invention is to complete in view of the above problems, it is an object of the present invention to provide can be former to iron ore Material equably addition adhesive and accurately can promptly control the concentration of adhesive and the novel of addition and improved Adhesive adding method, device for adding binder, kneading machine and compounding process.

Means for solving the problems

In order to solve above-mentioned problem, inventors have made intensive studies, and as a result find：Opened wide by using outlet side Mixing nozzle mixes to adhesive and addition water, is sprayed to putting into the raw material in the raw material throw-in part of kneading machine, So as to the pressure balance that will not make adhesive stoste and addition water is collapsed, the moisture that can be directed to iron ore material changes, promptly Control addition and binder concn, are uniformly mixed in iron-smelting raw material.

It moreover has been found that in order to equably mix viscosity adhesive high and addition water, by making the addition water of spraying and gluing Mixture collides contact, the binder aqueous solution that can be uniformly mixed.

The present invention considers above-mentioned opinion and completes, and the part as its main idea is as described below.

A kind of certain viewpoint of the invention, there is provided adhesive adding method, it is characterised in that：In making for iron ore material Grain in, by the adhesive and water that are supplied respectively to by adhesive supply pipe and feed pipe are mixed and outlet side open wide Mixing nozzle is arranged near the raw material throw-in part of the kneading machine of iron ore material, from the mixing nozzle to putting into the mixing The binder aqueous solution that iron ore material sprinkling in the raw material throw-in part of machine is mixed by described adhesive and the water.

Additionally, to solve above-mentioned problem, a kind of another viewpoint of the invention, there is provided device for adding binder, its spy Levy and be：Possess and the adhesive supply pipe of adhesive is supplied in the granulation of iron ore material, the feed pipe of water is supplied and is mixed Nozzle is closed, the mixing nozzle is arranged near the raw material throw-in part of the kneading machine of iron ore material, to being supplied by described adhesive Mixed to pipe and the described adhesive that is supplied respectively to of the feed pipe and the water, and the mixing nozzle outlet side Open wide；The mixing nozzle to the iron ore material sprinkling in the raw material throw-in part for putting into the kneading machine by described adhesive and The binder aqueous solution that the water mixes and generates.

Additionally, to solve above-mentioned problem, a kind of another viewpoint of the invention, there is provided kneading machine, it is characterised in that：Tool Standby described adhesive adding set.

Additionally, to solve above-mentioned problem, a kind of another viewpoint of the invention, there is provided compounding process, it is characterised in that： Using described adhesive adding set, for putting into the iron ore material in the raw material throw-in part of kneading machine, while sprinkling is viscous The mixture aqueous solution, while kneading the iron ore material in the kneading machine.

Furthermore, it is possible to carry out as follows：The mixing nozzle is by outer nozzle and is disposed in the outer nozzle Inner nozzle constitute dual structure, on a side of the outer nozzle or the inner nozzle connect described adhesive supply pipe, The feed pipe is connected on the opposing party of the outer nozzle or the inner nozzle, by for from described adhesive supply pipe to The described adhesive of supply in the outer nozzle, the water that spraying is supplied by the feed pipe mixes in the outer nozzle Described adhesive and the water, generate the described adhesive aqueous solution, and the jet hole from the outer nozzle is to the iron ore material The sprinkling described adhesive aqueous solution.

Furthermore it is possible to carry out as follows：Described adhesive supply pipe is formed at the outer nozzle with insertion Inflow entrance connection on side, the feed pipe is communicatively connected with the inner nozzle, by for the institute from the outer nozzle The described adhesive that inflow entrance is ejected into the outer nozzle is stated, from the jet hole spraying water of the inner nozzle, will be described Water is blended in described adhesive, generates the described adhesive aqueous solution.

Furthermore, it is possible to carry out as follows：The feed pipe is formed on the side of the outer nozzle with insertion Opening connection, described adhesive supply pipe is communicatively connected with the inner nozzle, by for the nozzle from the inner nozzle Mouth is ejected into the described adhesive in the outer nozzle, from the opening spraying water of the outer nozzle, the water is mixed Close in described adhesive, generate the described adhesive aqueous solution.

Additionally, described adhesive can also be the dispersant of polyacrylic.Further, the viscosity of adhesive stoste is preferably Below 5000mPas.

In addition it is also possible to the iron ore in moisture or the kneading machine according to contained by the iron ore material is former The input amount of material, at least either party flow in control described adhesive supply pipe or the feed pipe.

Furthermore, it is possible to carry out as follows：The iron ore material contains the profit after using kneading machine mixing The micro mist and nuclear particle granulated with comminutor, described adhesive are to make the micro mist scattered in the iron ore material Dispersant.

According to above-mentioned composition, it is arranged near the raw material throw-in part of kneading machine by by mixing nozzle, by by adhesive Mixing nozzle positioned at point of addition (near raw material throw-in part) is transported to respective pipe arrangement with water, can accurately be controlled The quantity delivered of adhesive and water.Additionally, mixing nozzle is to the adhesive and water that are supplied respectively to by adhesive supply pipe and feed pipe Mixed, generated binder aqueous solution, the bonding is sprayed to putting into the iron ore material in the raw material throw-in part of kneading machine The agent aqueous solution.Thereby, it is possible to before iron ore material is put into kneading machine, equably add concentration to the iron ore material equal Even binder aqueous solution.Further, since mixing nozzle mixed adhesive and water under opening pressure, therefore, it is possible to become more tacky rapidly The concentration of the mixture aqueous solution, and be located near raw material throw-in part by by mixing nozzle, the adhesive after can concentration be changed The aqueous solution is added in iron ore material immediately.Thus, it is possible to according to iron ore material containing moisture or raw material input amount Change, the concentration of binder aqueous solution and addition is accurately altered to appropriate value rapidly respectively, be added to iron ore In raw material.

Invention effect

It is as described above, in accordance with the invention it is possible to equably added in iron ore material adhesive and can high accuracy Ground promptly controls the concentration and addition of adhesive.

Brief description of the drawings

Fig. 1 is the explanation of the adhesion coating on the main part inner peripheral surface for represent the rotating vanes kneading machine for being attached to conventional Figure.

Fig. 2 is to represent the schematic diagram using the adhesive adding method of static mixer.

Fig. 3 is the schematic diagram for representing the modification using the adhesive adding method of static mixer.

Fig. 4 is the schematic diagram of the agglomerating plant for representing the kneading machine for possessing the 1st implementation method of the invention.

Fig. 5 is the schematic diagram of the kneading machine for representing the device for adding binder for possessing the implementation method.

Fig. 6 is the schematic diagram of the mixing nozzle of the device for adding binder for representing the implementation method.

Fig. 7 is the schematic diagram of the mixing nozzle of the device for adding binder of the modification for representing the implementation method.

Specific embodiment

Hereinafter, referring to the drawings, optimal implementation method of the invention is described in detail.Further, in this specification and In accompanying drawing, for the inscape for substantially being constituted with identical function, additional identical symbol, and repeat specification is omitted.

[1. agglomerating plant be monolithically fabricated]

First, reference picture 4, the kneading machine to employing the device for adding binder with the 1st implementation method of the invention Being monolithically fabricated for agglomerating plant illustrate.Fig. 4 is to represent to employ the device for adding binder with present embodiment The schematic diagram being monolithically fabricated of the agglomerating plant of kneading machine.

As shown in figure 4, the agglomerating plant of present embodiment mainly possesses simulation pelletizing production line 20, grain granulation production line 30 and sintering machine 40.Grain granulation production line 30 is carried out granulation to the iron ore material based on micro mist and forms for manufacturing Granules (hereinafter referred to as " raw materials for sintering particle ") manufacturing line.On the other hand, simulation pelletizing production line 20 be for Manufacture is granulated to the iron ore material containing micro mist and coarse grain and micro mist is attached on the coarse grain as nuclear particle and formed Granules (hereinafter referred to as " simulation granules ") manufacturing line.

Here, first to being illustrated for manufacturing the iron ore material of above-mentioned raw materials for sintering particle and simulation granules. Using iron ore material as the raw materials for sintering with the manufacture sintering deposit of sintering machine 40.As the raw materials for sintering, for example, can use Ironmaking dust (blast furnace dust dust, converter dust etc.), particle feed, lime are with the addition of in main material is iron ore material It is one kind or two or more former as mixing obtained from auxiliary material in stone, dolomite, silica, olivine, coke blacking, anthracite etc. Material.Used as iron ore material, as long as the common iron ore used as raw materials for sintering, its species is not limited, for example, removing (for example, goethite, limonite (beans ore outside bloodstone, magnetic iron ore, or containing the iron ore compared with multi-crystallization water (pisolitic ore) etc.) etc.), further, can also be the ore of Porous (for example, horse traction mamba ore (Marra Mamba Ore), high phosphorus Bu Luokeman ores (Brockman Ore) etc.).

Above-mentioned iron ore material because making granulation be deteriorated containing more micro mist, the weakened of granules, to sintering Granules rupture in the sintering circuit in conveying operation and sintering machine 40 before machine 40.Therefore, will be containing more described micro- When the iron ore material of powder is introduced directly into sintering machine 40, cause aeration deteriorate drastically, damage the productivity ratio of sintering deposit.Institute To improve the intensity of granules by applying granulation treatment to the iron ore material.

That is, the iron ore material of the above is classified according to its mineral or granularity, respectively with simulation granulation production The pelletizing production line of line 20 and grain granulation production line 30 the two systems is granulated (simulation particle or granulating), is manufactured Raw materials for sintering particle and simulation granules.Hereinafter, each pelletizing production line is described in detail.

First, simulation pelletizing production line 20 is described in detail.Simulation pelletizing production line 20 is that manufacture makes micro mist (for example Particle diameter is less than 250 μm) it is attached on the coarse grain of the iron ore material as nuclear particle (such as particle diameter is more than 3mm) and obtains Simulation granules production line.As shown in figure 4, the simulation pelletizing production line 20 has sintering of the storage containing coarse grain and micro mist The raw material tank 21 of raw material, screening machine 22, by the kneading machine 23 of the mixings such as raw materials for sintering and water-soluble binder, by mixing Raw materials for sintering is granulated to manufacture the comminutor 24 of simulation granules.

In raw material tank 21, for example, storing the iron ore (such as beans ore) containing coarse grain and micro mist or containing coke The iron ore material of powder, lime stone etc., (such as 3mm is screened into more than regulation particle diameter using screening machine 22 by the iron ore material More than) coarse grain and the micro mist smaller than coarse grain.Wherein coarse grain can be directly used as nuclear particle, be conveyed to comminutor 24.

On the other hand, micro mist is loaded the kneading machine 23 being for example made up of sieve ground lattice mixer (Loedige mixer) etc. In, together kneaded with adhesive, generate mixture.As kneading machine 23, ploughshare mixer (Ploughshare can be used Mixer the vertical kneading machine for being permitted the rotating vanes such as mixer (EIRICH mixer)), is liked.It is viscous in kneading machine as being added to Mixture, from from the viewpoint of improving granulation property, for example can be using dispersants such as polyacrylics (for promoting what solid was crosslinked Dispersant, including with the addition of the aqueous solution or colloid of dispersant), quick lime, at least more than a kind in lignin.It is taken as The adhesive that is added in kneading machine in the granulating working procedure of the agglomerating plant of present embodiment example, it is preferred to use polyacrylic acid The dispersants such as system.

The mixture obtained by kneading machine 23 is loaded by trommel mixer etc. with the coarse grain from above-mentioned screening machine 22 In the comminutor 24 of composition.On the comminutor 24, for example, can be using trommel mixer or pan pelletizer etc., by institute Comminutor 24 is stated, the mixture to iron ore material is granulated (simulation particle), as simulation granules.Specifically, Processed by using the granulation of comminutor 24, be attachment coke blacking, other iron ores around nuclear particle, be contained in bonding in coarse grain Micro mist (such as particle diameter is less than 250 μm) in agent, manufacture simulation granules (for example, particle diameter is 1~10mm).

Then, grain granulation production line 30 is described in detail.Grain granulation production line 30 is manufacture to specify Micro mist below particle diameter granulated for the iron ore material of main body obtained from the granules i.e. production line of raw materials for sintering particle. Iron ore material based on micro mist, e.g. contains the iron ore of the particle that 60 mass % above particle diameters are less than 250 μm Raw material.Raw materials for sintering particle is, for example, the granules that particle diameter is 1~10mm, average grain diameter is 5mm, in the present embodiment, is It is the granules of the particle of more than 3mm containing 70 mass % above particle diameters.

As shown in figure 4, the grain granulation production line 30 possesses the original for storing the iron ore material based on micro mist Hopper 31, screening machine 32, the pulverizer 33 for crushing the iron ore material, raw materials for sintering and adhesive after crushing etc. is entered The kneading machine 34 of row mixing, the comminutor 35 for manufacturing raw materials for sintering particle by being granulated to the raw materials for sintering for kneading, sieve The drying machine 37 for selecting machine 36, the raw materials for sintering particle to granulating to be dried.Wherein, kneading machine 34 is that possess bonding of the invention One example of the kneading machine of agent adding set, its detailed description is aftermentioned.

In the raw material tank 31 of above-mentioned grain granulation production line 30, the various iron ore materials containing more micro mist are stored (for example, horse traction mamba ore, high phosphorus Bu Luokeman ores etc.), the micro mist containing above-mentioned ironmaking dust, particle feed etc. are former The raw materials for sintering of the adhesive such as material or lime stone etc..As the iron ore, from the sight of the intensity for being easy to granulate and embody granules Point sets out, and is preferably in advance gone scalping screen blanking more than regulation particle diameter by screening machine (not shown) etc., as certain degree Micro mist (such as particle diameter is below 3mm).

From the iron ore material of the supply of the raw material tank 31, first, it is screened machine 32 and sieves, then will specifies particle diameter (example Such as 3mm) following micro mist is supplied in pulverizer 33.On the other hand, the particle more than the regulation particle diameter is above-mentioned in order to be used as The nuclear particle of granules is simulated, is fed into the comminutor 24 of simulation pelletizing production line 20.Pulverizer 33 is for example pressed by rolling Contracting machine, ball mill etc. are constituted, and the iron ore material of input is crushed to the size distribution of regulation.In this way, by the way that iron ore is former Feed powder is broken and be micronized and whole grain, can make back segment granulation process be more prone to.

Then, in kneading machine 34, by adding adhesive and moisture has been carried out after moisture adjusts, to the iron of micro mist shape Ore is kneaded.In the present embodiment, as the kneading machine 34, for example, lattice mixer, ploughshare sieve can be used The kneading machine of the rotating vanes such as mixer.So in the present embodiment, kneading machine is set by the leading portion in comminutor 35 34, formation improves the composition of the mixing ability of iron ore material and adhesive.As the adhesive being added in kneading machine, from From the viewpoint of raising granulation property, for example, can be using dispersants such as polyacrylics (for the dispersion for promoting solid to be crosslinked Agent, including with the addition of the aqueous solution or colloid of dispersant), quick lime, at least more than a kind in lignin.As using this The adhesive being added in kneading machine in the granulating working procedure of the agglomerating plant of embodiment example, it is preferred to use polyacrylic etc. Dispersant.

Raw materials for sintering after being kneaded using kneading machine 34 is fitted into comminutor 35 and is granulated.As comminutor 35, for example, trommel mixer or pan pelletizer etc. can be used.By using the granulation of the comminutor 35, for example, can make The approximately spherical granules that granulation footpath is 1~10mm, preferable particle size is 3~6mm (such as average grain diameter is 5mm) are former sintering Material particle.Size distribution on the raw materials for sintering particle, for example, it is also possible to by particle diameter for the granularity of more than 3mm is defined as 70 Quality %.

So the raw materials for sintering particle of manufacture uses drying after the granules for having screened more than regulation particle diameter with screening machine 36 Machine 37 is dried.As drying machine 37, fluidized bed drying machine, packed layer drying machine, drum type brake drying machine etc. can be used.

As previously discussed, by regulation match ratio match somebody with somebody share simulation pelletizing production line 20 granulate simulation granules and with The raw materials for sintering particle of the grain granulation of pelletizing production line 30, is supplied in sintering machine 40.Sintering machine 40 is made to above-mentioned 2 kinds of raw materials for sintering Grain thing is sintered, and manufactures sintering deposit.The sintering deposit is cooled down via using the broken of disintegrating machine (not shown) and using sintering After the cooling of device (not shown), blast furnace is supplied to.

More than, being monolithically fabricated for agglomerating plant to present embodiment is illustrated.In the present embodiment, above-mentioned In simulation pelletizing production line and grain granulation production line 30, in order to improve the granulation of comminutor 24,35, set respectively in its leading portion Kneading machine 23,34 is put, by the kneading machine 23,34, after being kneaded in adding binder to iron ore material, will To mixture be supplied to comminutor 24,35 to be granulated.Present embodiment using the kneading machine 23,34 when being kneaded Adhesive adding method aspect there is feature, kneading machine 23,34 possesses characteristic to realize the adhesive adding method The device for adding binder of structure.Further, the sintering that the kneading machine 50 shown in Fig. 5 described later is suitable as shown in above-mentioned Fig. 4 sets Standby kneading machine 23,34.Feature on present embodiment is device for adding binder and the adhesive addition side of kneading machine 50 Method is as described later (5~Fig. 7 of reference picture).

[the 2. the result of the necessity of binder concn control]

Then, before the adhesive adding method to present embodiment is described in detail, using above-mentioned Fig. 2 and Fig. 3 The example of shown adhesive adding method, high accuracy and adhesive is promptly controlled during to adding binder in kneading machine The result of the necessity of concentration is illustrated.

As described above, in the adhesive adding method of Fig. 2 and Fig. 3, in order to uniform binder aqueous solution is added to In iron ore material, using static mixer 10, the water (addition water) of mixed adhesive stoste and moisture adjustment, generation regulation The binder aqueous solution of concentration, kneading machine 1 is supplied by the binder aqueous solution via 1 pipe arrangement 5, from the main part 2 of kneading machine 1 It is added in iron ore material.Additionally, the moisture (raw material moisture) contained because putting into the iron ore material in kneading machine 1 becomes Move, therefore the appropriate value of the binder concn being added in the raw material also at every moment changes.If be added to by kneading machine 1 Binder concn in iron ore material is not appropriate value, then the granulation of the granulating working procedure of back segment declines.So, in raw water , it is necessary to binder concn promptly to be changed to be adapted to the concentration of the raw material moisture after change as far as possible when dividing change.

But, the adhesive adding method of above-mentioned Fig. 2 and Fig. 3 is due to being to pass through 1 from static mixer 10 to kneading machine 1 The device of the supply binder aqueous solution of pipe arrangement 5 is constituted, thus when raw material moisture changes, even if IMU excessively stream adjustable valve 11st, the flow of 14 pairs of adhesive stostes for supplying static mixer 10 and addition water is adjusted, after controlling into suitable change The binder concn of raw material moisture, the binder aqueous solution remained in the pipe arrangement 5 (is adapted to the concentration of the raw material moisture before change Binder aqueous solution) it is also fed with anyway in kneading machine 1, so as to be added in raw material.In this way, above-mentioned Fig. 2 and Fig. 3 Adhesive adding method is prolonged with remaining in the degree of the binder aqueous solution in pipe arrangement 5 and being produced in the change of binder concn Late, it is thus poor relative to the responsiveness of the change of raw material moisture.

Thus, the present application persons in raw material moisture in the adhesive adding method of above-mentioned Fig. 2 and Fig. 3, becoming During change, the binder aqueous solution remained in pipe arrangement 5 produces how degree to the binder concn for being suitable for the mixture of granulation Harmful effect verified.

Table 1 and table 2 show its result.Table 1 shown in the adhesive adding method, the iron ore in kneading machine 1 is put into The ratio (raw material moisture ratio) of the moisture shared by stone raw material from 8.5 mass % drop to 8.0 mass % when, to the bonding in raw material The deviation compared with appropriate value of agent solid constituent verified obtained from result.Table 2 is shown in raw material moisture ratio from 8.0 When quality % rises to 8.5 mass %, the deviation compared with appropriate value to the adhesive solids composition in raw material is verified Obtained from result.Further, in above-mentioned checking, in the adhesive adding method of Fig. 2, as pipe arrangement 5, using 20m's long Pipe arrangement 50A.

Table 1：Raw material moisture ratio from 8.5 mass % drop to 8.0 mass % when adhesive solids composition than deviation

Table 2：Raw material moisture ratio from 8.0 mass % rise to 8.5 mass % when adhesive solids composition than deviation

Here, the various terms used in table 1 and table 2 are defined.Further, binder aqueous solution is adhesive stoste The aqueous solution mixed with water (addition water), raw material moisture is the moisture contained by iron ore material.

The quality of the moisture in adhesive stoste：WB(ton)

The quality of the solid constituent in adhesive stoste：SB(ton)

Add the quality of water：WW(ton)

The quality of the raw material moisture before input kneading machine：WF(ton)

The quality of the iron ore material before input kneading machine：SF(dry-ton)

Binder concn CB is added to the concentration (quality %) of the binder aqueous solution in iron ore material, uses following formula table Show.

CB={ SB/ (SB+WB+WW) } × 100

Binder aqueous solution addition T is added to the quality of the binder aqueous solution in iron ore material, uses following formula table Show.

T=SB+WB+WW

Adhesive solids composition is the quality SB of solid constituent in adhesive stoste relative to iron ore material than RS The ratio (quality %) of quality SF, is represented with following formula.

RS={ SB/SF } × 100

Raw material moisture ratio RW0 is the quality WF of raw material moisture relative to iron ore material and the gross mass of raw material moisture (SF+WF) ratio (quality %), is represented with following formula.

RW0={ WF/ (SF+WF) } × 100

Raw material moisture ratio RW1 is the quality of total moisture relative to the mixed adhesive aqueous solution and iron ore material after mixing The ratio (quality %) of gross mass afterwards, is represented with following formula.

RW1={ (WF+WB+WW)/(SF+SB+WF+WB+WW) } × 100

Then, the result to table 1 and table 2 is illustrated.

In the adhesive adding method shown in Fig. 2, as shown in table 1, dropped from 8.5 mass % in raw material moisture ratio RW0 It is low to 8.0 mass % when, remain in the binder concn CB (14.1 mass %) of binder aqueous solution in pipe arrangement 5 with relative to The optimum concentration CB (7.7 mass %) of the raw material moisture ratio (8.0 mass %) after decline is compared and increased.Therefore, inciting somebody to action Remain in the high concentration in the pipe arrangement 5 binder aqueous solution be added to raw material during A, by most just when about 1.9 times of SB Adhesive in solid constituent SB ' be supplied in the iron ore material in kneading machine 1, thus the binder concn mistake in mixing It is high.As a result, adhesive excess supply, mixture is slurried, thus produces the granulation of mixture to decline or can not be defeated The influence for sending mixture etc. great.

On the other hand, as shown in table 2, when raw material moisture ratio RW0 rises to 8.5 mass % from 8.0 mass %, remaining Raw material moisture ratio after in the binder concn CB (7.7 mass %) of the binder aqueous solution in pipe arrangement 5 and relative to rising The optimum concentration CB (14.1 mass %) of (8.5 mass %) is compared and decreased.Therefore, will remain in it is low in the pipe arrangement 5 The binder aqueous solution of concentration is added in the time A in raw material, only by most just when solid in about 0.52 times of SB of adhesive Body composition SB ' is supplied in the iron ore material in kneading machine 1, therefore binder concn is too low in mixing.As a result, viscous Mixture supply is not enough, produces the great influences such as granules granularity reduction.

More than, learnt from the result of table 1 and table 2：Even if putting into the moisture of the iron ore material of kneading machine 1 with 0.5 , in the adhesive adding method of above-mentioned Fig. 2, also there is the problem that granulation property significantly declines in quality % or so minor variations. Additionally, in the adhesive adding method of Fig. 3, though how much improving above mentioned problem, becoming more tacky according to the change of raw material moisture The responsiveness of the static mixer 10 during mixture concentration is poor, therefore there are following problems：Pressure in static mixer 10 is put down Before weighing apparatus reaches stabilisation, the binder aqueous solution of deviation of concentration debita spissitudo has been added.In this way, above-mentioned Fig. 2's and Fig. 3 In adhesive adding method, by using static mixer 10, although with the binder aqueous solution that can generate even concentration Advantage, but there is following technical task：The adhesive water of debita spissitudo can not be rapidly provided in the change of raw material moisture Solution.

In addition, being the main body from the kneading machine 1 for being connected to rotating vanes in the adhesive adding method of Fig. 2 and Fig. 3 The structure of the addition spray adhesive aqueous solution of nozzle 6 in portion 2, therefore, as shown in figure 1, also there are following technical tasks：If Form adhesion coating 4 in the inner peripheral surface of main part 2, then can not be to the equably spray adhesive aqueous solution of the raw material in kneading machine 1.

Thus, in order to all solve these technical tasks, as described in detail below, the adhesive adding method of present embodiment It is characterised by：Adhesive stoste and addition water are transported to mixing with respective pipe arrangement in the state of accurately control flow In the raw material throw-in part of machine, both are mixed by configuring the mixing nozzle near the raw material throw-in part, form adhesive water , be added to for binder aqueous solution in the iron ore material of input kneading machine by solution from the mixing nozzle.

[3. device for adding binder and adding method]

Then, reference picture 5, the device for adding binder to one embodiment of the present invention and the adhesive addition using it Method is illustrated.Fig. 5 is the schematic diagram of the kneading machine for representing the device for adding binder for possessing present embodiment.Further, Fig. 5 Shown kneading machine 50 is applicable to be located at the simulation pelletizing production line 20 of the agglomerating plant shown in Fig. 4, grain granulation production line Kneading machine 23,34 in 30.

As shown in figure 5, the kneading machine 50 of present embodiment is the kneading machine with blade rotational structure, for example, by sieve ground Lattice mixer, ploughshare mixer etc. are constituted.Kneading machine 50 possesses：For housing by mixture (such as iron ore material 57) Columnar main part 52, the multiple stirring vanes 53 rotated by rotary shaft 54, the drive division that rotary shaft 54 rotates is set (not scheme Show), the raw material throw-in part 55, the biography for conveying iron ore material 57 that are made up of the raw material input funnel etc. of reverse tapered shapes Send the delivery sections 56 such as band.

In the kneading machine 50 of said structure, by delivery section 56 convey come iron ore material 57 from the end of delivery section 56 Under clan, from the main part 52 of the input kneading machine 50 of raw material throw-in part 55.When the raw material puts into, from mixing nozzle described later 70 are added in iron ore material 57 binder aqueous solution.The iron ore material 57 in main part 52 is put into by rotate One side of stirring vane 53 that axle 54 is pivoted about is stirred, while in the main part 52 to prescribed direction (such as Fig. 5's Left direction) advance.Thus, iron ore material 57 and binder aqueous solution are kneaded, generation is adapted to back segment granulating working procedure The mixture (such as particle diameter is hundreds of μm~several mm) of the regulation particle diameter of granulation.By the mixture from the outlet of main part 52 Discharge (not shown), is conveyed to comminutor.In the present embodiment, iron ore is added binder in above-mentioned kneading machine 50 The structure and adding method of the device for adding binder in raw material 57 have feature.

Here, adhesive is illustrated first.Adhesive is to enter to the iron ore material containing micro mist iron ore The granulation inorganic agent that row granulation is processed and used.As the adhesive, in order to improve the back segment granulating working procedure of above-mentioned compounding procedure In granulation, it is preferred to use polyacrylic dispersant, to ensure the dispersiveness of the particulate of iron ore material higher.

As above-mentioned adhesive, for example, it is adapted to be processed using the granulation described in Japanese Unexamined Patent Publication 2003-155524 publications Agent (polyacrylic dispersant).The granulation inorganic agent is to contain the water soluble polymer that clay dispersibility is more than 0.5 The inorganic agent of compound.The macromolecular compound contains carboxyl and/or its salt, and number-average molecular weight is more than 500 and less than 20000 In the range of, and the polydispersity represented with weight-average molecular weight/number-average molecular weight can more than 1.2 and less than 12.0 scope It is interior.More particularly, above-mentioned macromolecular compound is, for example, of the carboxyl contained by (a) polyacrylic acid, (b) polyacrylic acid Partly or entirely it is selected from least one of selection in polyacrylate obtained from least one neutralization among sodium, potassium, calcium, ammonia Plant compound.

By using such polyacrylic dispersant as adhesive, being added to the iron ore containing iron ore micro mist former In material, the impartial dispersion of micro mist, thus micro mist can be made mutually not to solidify to each other in the raw material, scattered micro mist can be made It is attached to around nuclear particle (coarse grain).So, being granulated to the iron ore material containing micro mist (simulation particle or Granulation) when, the dispersiveness of the micro mist in the raw material is kept by height, it is possible to increase scattered micro mist is attached to nuclear particle The effect of surrounding.Thus, it is possible to carry out appropriate granulation (simulation particle or granulating) to iron ore material, it is possible to increase make Graininess.

Then, Fig. 5 is referred again to, the device for adding binder and adding method in the kneading machine 50 of present embodiment is carried out Explanation.As shown in figure 5, device for adding binder possesses：For supplying the adhesive supply pipe 63 of adhesive stoste, for supplying The feed pipe 66 of moisture adjustment water (addition water), be connected to it is mixed on the leading section of the adhesive supply pipe 63 and feed pipe 66 The control device (not shown) that conjunction nozzle 70, the flow to adhesive supply pipe 63 and feed pipe 66 are controlled.

Adhesive supply pipe 63 be for from adhesive supply source (such as adhesive original fluid container, not shown) to mixing nozzle The pipe arrangement of 70 supply adhesive stostes.In the way of adhesive supply pipe 63, flow control valve 61 and electromagnetic flowmeter 62 are provided with. The flow of 62 pairs of adhesive stostes of the flowing in adhesive supply pipe 63 of electromagnetic flowmeter is measured, flow control valve 61 According to the measurement result and the information such as raw material moisture rate or raw material input amount of electromagnetic flowmeter 62, will be viscous in adhesive supply pipe 63 Regulation flow of the flow control of mixture stoste in setting.Further, the supply adhesive of adhesive supply pipe 63 of present embodiment Stoste is used as adhesive of the invention, but the present invention is not limited to the example, for example, it is also possible to supply in advance that adhesive is former Liquid is diluted to the binder aqueous solution of normal concentration.

Feed pipe 66 is for being supplied for adjusting bonding to mixing nozzle 70 from water supply source (such as water pot, not shown) The pipe arrangement of the addition water of the concentration of the agent aqueous solution.In the way of feed pipe 66, flow control valve 64 and electromagnetic flowmeter 65 are provided with. The flow of 65 pairs of addition water of the flowing in feed pipe 66 of electromagnetic flowmeter is measured, and flow control valve 64 is according to Electromagnetic Flow The measurement result and the information such as raw material moisture rate or raw material input amount of meter 65, the flow control of the addition water in feed pipe 66 is existed The regulation flow of setting.

Further, device for adding binder is also equipped with control device (not shown), the iron ore in input kneading machine 50 will be measured Data input control device obtained from the raw material moisture and input amount of stone raw material 57.Control device is based on the data of input, asks Go out the information such as above-mentioned raw material moisture rate or raw material input amount, calculate the controlled quentity controlled variable of flow control valve 61 or flow control valve 64, Indicate the aperture of each regulating valve.

As it was previously stated, raw material moisture because iron ore material keeping state or weather, material fiting ratio etc. often when change. The control device of the device for adding binder of present embodiment controls flow control valve 61 by the variation according to the raw material moisture Or flow control valve 64, adhesive stoste amount and addition water to being supplied in mixing nozzle 70 are accurately controlled. Additionally, on raw material input amount, by setting the amount under the letting out of raw material tank, substantially can weight feed iron ore material, it is but real If the variation of dry measure can be produced in border.

Thus, before kneading machine 50 is put into, for example, by measuring means such as belt scales, to delivery section 56 (conveyer belt etc.) Raw material input amount be measured, also can according to the measured value accurately control adhesive stoste amount and addition water.

By above-mentioned adhesive supply pipe 63, feed pipe 66 and its flow control mechanism, can be to mixing nozzle 70 The adhesive stoste of supply and the flow of addition water are accurately controlled.Thus it is possible to according to the original of iron ore material 57 Material moisture and raw material input amount, to the concentration of binder aqueous solution being added in iron ore material 57 from mixing nozzle 70 and add Dosage is accurately controlled.

Then, it is that the function of mixing nozzle 70 is illustrated to the feature of present embodiment.Knot on mixing nozzle 70 Structure is described below.Mixing nozzle 70 has the bonding to individually being supplied by above-mentioned adhesive supply pipe 63 and feed pipe 66 Function that agent stoste and water are mixed and the binder aqueous solution being mixed to get by this is sprayed at puts into kneading machine 50 In iron ore material 57 in function.Further, since the outlet side of the nozzle of mixing nozzle 70 is opened wide, will not be as static agitation There are adhesive stoste and addition water Xiang Hu Gan Wataru, the feelings so as to both pressure balance collapses in static mixer like that in machine Condition, even if therefore quantity delivered change, do not control yet postpone, stability of flow.By using the mixing nozzle 70, it is suitably executed The adhesive adding method of present embodiment.

Mixing nozzle 70 is arranged near the raw material throw-in part 55 of kneading machine 50, to putting into the iron in the raw material throw-in part 55 The Direct spraying binder aqueous solution of ore 57.Here, it is so-called arrange mixing nozzle raw material throw-in part 55 near, refer to from Mixing nozzle 70 can directly to putting into the arbitrary position of the spray adhesive aqueous solution of iron ore material 57 in kneading machine 50. For example, as shown, mixing nozzle 70 can be configured vicinity (mixing nozzle 70 and the raw material throw-in part 55 in raw material throw-in part 55 The position of separation), in addition although not shown, but it is also possible to which mixing nozzle 70 is arranged on the arbitrary position of raw material throw-in part 55 On (such as funnel side).

In this way, be located near the raw material throw-in part 55 of kneading machine 50 by by mixing nozzle 70, can be by by mixing spray The binder aqueous solution of the mixing of mouth 70 directly carries out sprinkling addition to the iron ore material 57 put into raw material throw-in part 55.By This, the device for adding binder of present embodiment can improve the responsiveness of the variation of the raw material moisture for iron ore material 57, The change of binder concn and addition can rapidly be tackled.

That is, as described above, in using the adding method of the static mixer 10 shown in Fig. 2 and Fig. 3, in raw material When moisture changes, it is desirable to by the flow of change pipe arrangement 13,16 immediately, make the adhesive stoste mixed by static mixer 10 Amount and addition water change.But, there are problems that following the 1st：In the properties of piping system, remain in and stirred positioned at static state The unsuitable binder aqueous solution of concentration in the pipe arrangement 5 in the downstream for mixing machine 10 can all be added to iron ore in any case In raw material.In addition, also there is as described below the 2nd：If the adhesive stoste of flowing and addition water in pipe arrangement 13,16 Flow (pressure) change, then both Xiang Hu Gan Wataru in the static mixer 10, both pressure balance collapses, thus be stabilized to It is time consuming untill the binder aqueous solution of desired concentration.Because of these problems, it is impossible to after addition concentration is adapted to change immediately The binder aqueous solution of raw material moisture, the responsiveness for the variation of raw material moisture is poor.

On the other hand, in the adhesive adding method of present embodiment, by adhesive stoste and addition water using respective Pipe arrangement 63,66 accurately control flow in the state of be transported to (adhesive near the raw material throw-in part 55 of kneading machine 50 The vicinity of point of addition), mixed by with mixing nozzle 70, it is directly appended in iron ore material 57.For example, in raw material When moisture rises, the flow of the addition water in feed pipe 66 is set to reduce appropriate amount by flow control valve 64.Additionally, in raw water When dividing reduction, the flow of the addition water in feed pipe 66 is made by flow control valve 64 increases appropriate amount.Thus, mixing nozzle 70 Adhesive stoste after adhesive supply pipe 63 and feed pipe 66 each accurately have adjusted flow and addition water are entered Row mixing, generation concentration is adapted to the binder aqueous solution of the raw material moisture after changing in high precision and promptly, is then added.

Further, for the increase and decrease of raw material moisture in above-mentioned, to adjusting adding in feed pipe 66 by flow control valve 64 The flow for adding water, controls the method for adhesive input amount to be illustrated, but as other methods, it is also possible to by using flow The flow of the adhesive stoste in the adjustment of regulating valve 61 adhesive supply pipe 63 controls adhesive input amount.But, this kind of In the case of, the amount of binder of the net weight in input kneading machine 50 changes, and the addition ratio relative to the adhesive of raw material also changes, Therefore preferably using the method for the flow that the addition water in feed pipe 66 is adjusted by flow control valve 64 described above.

In accordance with the above, the adhesive adding method of present embodiment can not be used for becoming with above-mentioned raw materials moisture The static mixer 10 of responsiveness difference of the change of corresponding binder concn is moved as mixed organization, and uses mixing nozzle 70, thus, it is possible to the variation of rapid reply raw material moisture, binder concn is changed immediately, the responsiveness of binder concn control is excellent It is good.Thus, with can accurately control binder concn, rapid addition concentration is optimal in the raw material moisture after variation The effect of binder aqueous solution.

In addition, in mixing nozzle 70, by being pre-mixed adhesive stoste and addition water before addition, generation concentration is equal Even binder aqueous solution, the iron ore material 57 from mixing nozzle 70 directly to putting into sprays the binder aqueous solution.Thus, Effect with the binder aqueous solution that even concentration can be equably added to iron ore material 57.

Additionally, due to be not to add binder aqueous solution from the main part 52 of kneading machine 50, but in input kneading machine 50 Binder aqueous solution is added position before to iron ore material 57.It is thus possible to enough prevent the mixing because being formed at shown in Fig. 1 The adhesion coating 4 of the inner peripheral surface of main part 2 of machine 1, and hinder the addition of binder aqueous solution, it is impossible to the problem of uniform addition.Also It is to say, in the present embodiment, does not add binder aqueous solution from main part 52, but from configuration near raw material throw-in part 55 Mixing nozzle 70, to adding binder aqueous solution in the iron ore material 57 before in investment subject portion 52.Thus, for example i.e. The inner peripheral surface of main part 52 in kneading machine 50 is set to form adhesion coating 4, adhesion coating 4 does not hinder the uniform addition of adhesive yet, can Adhesive is equably added to iron ore material 57.

[the 4. specific composition of mixing nozzle]

Then, reference picture 6, the tool of the mixing nozzle 70 of the adhesive adding method to being adapted for carrying out above-mentioned present embodiment Body is constituted and is described in detail.Fig. 6 is the configuration example of the mixing nozzle 70 of the device for adding binder for representing present embodiment Longitudinal section.

As shown in fig. 6, mixing nozzle 70 has the dual cylindrical structure being made up of outer nozzle 71 and inner nozzle 72.Outer nozzle 71 be diameter than larger cylinder part, inner nozzle 72 is the diameter cylinder part smaller than outer nozzle 71.By inner nozzle 72 with horizontal stroke Mode of the section on concentric circles is disposed in the inside of outer nozzle 71.Further, in the example of this mixing nozzle 70, mixing nozzle is Dual cylindrical structure, but it is also not limited to cylindrical structure, or polygonal barrel structure.

The leading section of above-mentioned adhesive supply pipe 63 is connected with the inflow entrance 74 being formed through in the side of outer nozzle 71. Adhesive supply pipe 63 is vertically connected with the side of outer nozzle 71 in Fig. 6, but the connection angle there is no particular limitation.This Outward, it is structure that 1 adhesive supply pipe 63 is connected on outer nozzle 71 at 1, but be also not limited to institute in the example of Fig. 6 Example is stated, for example, it is also possible to many adhesive supply pipes 63 to be connected to many places of the circumferencial direction of outer nozzle 71.Thereby, it is possible to More uniformly to supply adhesive in outer nozzle 71.

Additionally, in the case that the viscosity ratio of adhesive stoste is higher, as shown in the example of Fig. 6, merely being supplied from adhesive Pipe 63 hangs down adhesive stoste B, is supplied in outer nozzle 71.But, in the case where the viscosity ratio of adhesive stoste B is relatively low (for example, when mixing the addition water of ormal weight in advance etc.), the spraying with addition water W is same, it is also possible to will be viscous using spray nozzle Mixture stoste B is supplied to the internal spraying of outer nozzle 71.

On the other hand, the leading section of feed pipe 66 is communicatively connected with inner nozzle 72.In the example of Fig. 6, in feed pipe 66 Leading section be connected with pipe sleeve 73 for reducing caliber, in addition, being connected with addition water in the leading section of the pipe sleeve 73 Spray nozzle is inner nozzle 72.By above-mentioned composition, the addition water W that will can be supplied by feed pipe 66 is from the front end of inner nozzle 72 The jet hole 75 in portion is to the internal spraying of outer nozzle 72.Further, be also not limited to as shown by the leading section of feed pipe 66 separately The example that jet element forms inner nozzle 72 and constitutes is installed, for example, it is also possible to the front end by being integrally formed feed pipe 66 Portion and inner nozzle 72, make the leading section of feed pipe 66 be played a role as inner nozzle 72 in itself.

Additionally, the leading section of feed pipe 66 and inner nozzle 72 are configured to and outer nozzle 71 in the inside of outer nozzle 71 Direction of principal axis identical direction, the jet hole 75 of the structure for making addition water W spray diffusion is provided with the leading section of inner nozzle 72.Interior spray The position of the jet hole 75 of the leading section of mouth 72 is in the downstream of the inflow entrance 74 of the outer nozzle 71 of connection adhesive supply pipe 63 (downside), and it is configured in nozzle inner side (upside) of the jet hole 76 of the leading section of outer nozzle 71.

By above-mentioned configuration, addition water W is made downward from the jet hole 75 of inner nozzle 72, to the interior side spray of outer nozzle 71 Diffusion, collides and mixes with the adhesive stoste B hung along the inner surface of outer nozzle 71.By the addition water W for making to be atomized Collide and mix with adhesive, adhesive is blended in addition water.Thereby, it is possible to more uniformly to outer nozzle Supply adhesive in 71.

Then, the work to the mixing nozzle 70 of the Fig. 6 constituted with more than is illustrated.Make via adhesive supply pipe 63 supply adhesive stoste B from the inflow entrance 74 of outer nozzle 71 to outer nozzle 71 in spray (inflow), along outer nozzle 71 Inner peripheral surface hangs.On the other hand, the addition water W via the supply of feed pipe 66 is made from the jet hole 75 of inner nozzle 72 to outer nozzle 71 Internal spraying spreads.As a result, in the lower side of the inside of outer nozzle 71, the above-mentioned addition water W and adhesive for being atomized diffusion Stoste B is mixed by collision, generates the binder aqueous solution M of normal concentration.By the spraying pressure of above-mentioned addition water W, make this Binder aqueous solution M sprays from the leading section jet hole 76 of outer nozzle 71 towards iron ore material 57.Thus, mixing nozzle 70 is viscous The point of addition (near raw material throw-in part 55) of mixture generates the binder aqueous solution M of even concentration, can be sprayed at iron ore In raw material 57.

Then, reference picture 7, the mixing nozzle 70 of the adhesive adding method to being adapted for carrying out above-mentioned present embodiment it is another One composition is illustrated.Fig. 7 is the composition of the mixing nozzle 70 of the device for adding binder of the modification for representing present embodiment Longitudinal section.

As shown in fig. 7, mixing nozzle 70 of the mixing nozzle 70 of modification also with above-mentioned Fig. 6 is same, with by outer nozzle 81 and inner nozzle 82 constitute dual cylindrical structure.Outer nozzle 81 be diameter than larger cylinder part, inner nozzle 82 is diameter The cylinder part smaller than outer nozzle 81.Inner nozzle 82 is provided in outer nozzle 81 in the way of cross section is on concentric circles Portion.

In the example of Fig. 7, with the leading section that inner nozzle 82 is integrally formed adhesive supply pipe 63.That is, bonding The internal diameter and external diameter of agent supply pipe 63 and inner nozzle 82 are identical footpath, and the leading section of adhesive supply pipe 63 is used as inner nozzle 82 Play a role, the mouth of pipe of adhesive supply pipe 63 plays a role as jet hole 85.The composition is for example adhesive stoste B's It is useful when viscosity ratio is higher, sprays of the adhesive stoste B supplied by adhesive supply pipe 63 from the inner nozzle 82 of its front end Mouthpiece 85 sprays, and is hung downwards by deadweight.Further, jet hole mentioned here 82 refers to the ejection for spraying liquid Mouthful, it is not limited to for by the aperture of liquid spray.

Further, the composition of the leading section of adhesive supply pipe 63 and inner nozzle 82 is not limited to the composition of above-mentioned Fig. 7.Example Such as, it is also possible to by separately adhesive supply pipe 63 leading section install adhesive stoste ejection jet element and conduct Inner nozzle 82 plays a role.For example, when the viscosity ratio of adhesive stoste B is relatively low (for example, the addition water of mixing ormal weight in advance When etc.), it is also possible to installed as the spray nozzle (not shown) of inner nozzle 82 in the leading section of adhesive supply pipe 63, make bonding Agent stoste B is from the jet hole 85 of the spray nozzle to the internal spraying of outer nozzle 81.

On the other hand, the leading section of feed pipe 66 is formed at the opening 84 on the side of outer nozzle 81 with being connected insertion On.In detail, the diameter connecting tube 87 bigger than feed pipe 66 is connected on the peripheral part of opening 84 of outer nozzle 81.For Water pipe 66 configures the state in the inside of connecting tube 86 with its leading section, is installed in connecting tube 87 via flange 88.Now, The leading section of feed pipe 66 is configured in the direction vertical with the extending direction of outer nozzle 81, with the side of outer nozzle 81 vertically Connection, but the closure is also not limited to, can arbitrarily connect as long as addition water W can spray to adhesive stoste B Connect direction.Consequently, it is possible to the leading section of feed pipe 66 can be connected to the opening of outer nozzle 81 via connecting tube 87 and flange 88 On 84 periphery.

Additionally, being provided with for making addition water W to the spraying of the internal spraying of outer nozzle 81 in the leading section of the feed pipe 66 Nozzle 90.In detail, the pipe sleeve 89 for reducing caliber is connected with the leading section of feed pipe 66, and then, in the pipe sleeve 89 Leading section be connected with addition water spray nozzle 90.The opening 84 that spray nozzle 90 is configured in above-mentioned outer nozzle 81 is attached Closely.By the composition, at the opening 84 of outer nozzle 81, the addition water W that is supplied by feed pipe 66 from spray nozzle can be made The jet hole 91 of 90 leading section is to the internal spraying of outer nozzle 81.

Additionally, the leading section of adhesive supply pipe 63 and inner nozzle 82 are configured in and outer nozzle in the inside of outer nozzle 81 81 direction of principal axis (such as vertical direction) identical direction.The position of the jet hole 85 of the leading section of inner nozzle 82 is in outer nozzle 81 Leading section jet hole 86 nozzle inner side (upside), and, be configured in connection feed pipe 66 outer nozzle 81 opening 84 upstream side (upside).By the configuration, from spray nozzle 90 of the configuration on the opening 84 of outer nozzle 81, make addition water W sprays to horizontal direction, and the addition water W that this is atomized is atomized diffusion in the inner side of outer nozzle 81, with the spray from inner nozzle 82 The adhesive stoste B that mouthpiece 85 hangs collides mixing.

It is structure that 1 feed pipe 66 is connected on outer nozzle 81 at 1, but do not limit further, in the example of fig. 7 Due to the example, for example, it is also possible to many feed pipes 66 are connected on multiple positions of the circumferencial direction of outer nozzle 81.By This, can more uniformly to supply addition water W in outer nozzle 81.

Then, the work to the mixing nozzle 70 of the Fig. 7 constituted with more than is illustrated.Via adhesive supply pipe 63 The adhesive stoste B of supply from the jet hole 85 of inner nozzle 82 to outer nozzle 81 in spray (inflow), hang downward.The opposing party Face, makes the jet hole of spray nozzles 90 of the addition water W supplied via feed pipe 66 from configuration on the opening 84 of outer nozzle 81 91, towards the above-mentioned adhesive stoste B for hanging, spread to the internal spraying of outer nozzle 81.As a result, under the inside of outer nozzle 81 Portion side, the above-mentioned addition water W for being atomized diffusion and adhesive stoste B is mixed by colliding, and generates the adhesive of normal concentration Aqueous solution M.By the spraying pressure of above-mentioned addition water W, make jet holes 86 of the binder aqueous solution M from the leading section of outer nozzle 81 Sprayed towards iron ore material 57.Thus, mixing nozzle 70 is dense in point of addition (near the raw material throw-in part 55) generation of adhesive Uniform binder aqueous solution M is spent, can be sprayed in iron ore material 57.

More than, reference picture 6 and Fig. 7, the specific structure to the mixing nozzle 70 of present embodiment are illustrated.According to The mixing nozzle 70 of present embodiment, by near the raw material throw-in part 55 of kneading machine 50, generating the adhesive of even concentration Aqueous solution M, can equably be sprayed in iron ore material 57.Additionally, dense in the variation change adhesive according to raw material moisture When spending, the responsiveness relative to the change of the binder concn is also high, being capable of the accurately uniform adhesive water of controlled concentration Solution.

In detail, it is in closed static mixer 10 in the adhesive adding method of above-mentioned Fig. 2 and Fig. 3 The mode of mixed adhesive stoste and addition water.Therefore, changed along with the flow of adhesive stoste or addition water, static agitation When the pressure balance of adhesive stoste and addition water in machine 10 is collapsed, have and reach the time consuming problem of stabilisation.With this phase It is right, it is the mode of mixed adhesive stoste B and addition water W in the mixing nozzle 70 opened wide to air in the present embodiment. So, pressure is not applied to adhesive stoste B or addition water W in the mixing nozzle 70, can in opening pressure mixed adhesive Stoste B and addition water W.Thus, it is possible to rapid reply and the change of the raw material moisture corresponding binder concn of variation, generate and spray The concentration of the binder aqueous solution for spilling is also uniform.

[5. effect]

More than, device for adding binder and adhesive adding method to the kneading machine 50 suitable for present embodiment are carried out Describe in detail.According to present embodiment, (point of addition of adhesive) configuration mixing near the raw material throw-in part 55 of kneading machine 50 Nozzle 70, using respective pipe arrangement 63,66, in high-precision control in the state of respective flow, by adhesive stoste and adds Add water and be supplied to mixing nozzle 70.Then, by mixing nozzle 70, mixed adhesive stoste and addition water, generate adhesive water Solution, binder aqueous solution is directly appended in the iron ore material 57 in input kneading machine 50.

The mixing nozzle 70 is in order to equably mixed adhesive stoste has dual circle with water is added in advance before addition Barrel structure.Thus, mixing nozzle 70 adds water W by being sprayed to adhesive stoste B in the inside of outer nozzle 71,81, makes bonding Agent stoste B and addition water W collide mixing, can generate the binder aqueous solution M of even concentration, are sprayed at iron ore material 57 In.

Composition more than, the adhesive adding method of present embodiment can be by the binder aqueous solution of even concentration Equably it is added in iron ore material, and can be according to variation of raw material input amount or raw material moisture etc. accurately promptly Control is added to the concentration and addition of the adhesive in raw material.

That is, as it was previously stated, raw material moisture is because of keeping state or weather, the material fiting ratio etc. of iron ore material Often change.According to present embodiment, adhesive stoste amount can be accurately controlled according to the variation of the raw material moisture With addition water.Additionally, on raw material input amount, also can be before kneading machine 50 be put into, for example, to being conveyed by delivery section 56 The raw material input amount of iron ore material be measured, according to the measured value high-precision control adhesive stoste amount and addition water Amount.So in the present embodiment, can according to change will be because being that raw material input amount or raw material moisture accurately adjust bonding Agent stoste amount and addition water, can add the binder aqueous solution of optium concentration.

In detail, adhesive stoste and addition water are transported to by respective pipe arrangement and are configured in front of point of addition Mixing nozzle 70, it is thus possible to which the change of the raw material moisture or input amount of the iron ore material 57 in kneading machine 50 is put into reply It is dynamic, the binder aqueous solution that concentration is adapted to the raw material moisture after changing or raw material input amount can be rapidly and accurately generated, Can be added in the iron ore material 57.So, adding method as shown in Figures 2 and 3 is prevented from binder concn Change when the unsuitable binder aqueous solution of concentration that will remain in pipe arrangement 5 be added in raw material, even and if not using The static mixer 10 low for the responsiveness of the change of binder concn, and responsiveness mixing nozzle 70 high is used, The binder aqueous solution of even concentration can be quickly generated.Thus, in the present embodiment, thrown according to raw material moisture or raw material Enter amount variation and the concentration of the binder aqueous solution to being added in raw material can rapidly and accurately control when changing The concentration of the binder aqueous solution is made, the time delay of method shown in Fig. 2 and Fig. 3 will not be produced.

So, the kneading machine 50 of present embodiment can be instant with the feedstock transportation amount or raw material moisture at every moment changing Correspondence, is accurately adjusted, one to the concentration of binder aqueous solution and addition that are added in iron ore material on one side While being kneaded to iron ore material and binder aqueous solution.Thus, the mixture for being manufactured by the kneading machine 50 will not be because viscous Mixture excessively forms pulp-like, will not decline granulation because adhesive is very few, it can be ensured that appropriate granulation conditions.Cause And, it is possible to increase the granulation in the granulating working procedure of the comminutor 24,35 of back segment, equably ensure to granulate quality.In this way, according to Present embodiment, the variation with feedstock transportation amount or raw material moisture is unrelated, can be held in the state of appropriate granulation conditions are maintained Continuous mixing and granulating working procedure, thus the failure such as equipment will not be caused to stop, can accurately tackling raw material moisture change or The change of feed throughput.As a result, high-quality granules can be manufactured stably, the sintering system of sintering machine 40 can be sought Make the stabilisation of operation.

Additionally, be not the main part 52 from kneading machine 50 according to present embodiment, but it is direct from above-mentioned mixing nozzle 70 To the spray adhesive aqueous solution of iron ore material 57 before input kneading machine 50.So, even if in the main part 52 of kneading machine 50 Inner peripheral surface formed adhesion coating 4 (reference picture 1), can also prevent from being hindered because of the adhesion coating 4 sprinkling of adhesive, can to input Preceding iron ore material 57 equably adds the binder aqueous solution of even concentration, therefore can be carried out in kneading machine 50 uniform Mixing.

Additionally, the holdup time on the iron ore material in kneading machine 50, though generally it is long also for 3 points or so in short-term Between, it is necessary to make the binder aqueous solution of even concentration be uniformly mixed in iron ore material entirety within the short time.At this In implementation method, when binder aqueous solution is added with kneading machine 50, by mixing nozzle 70, while by the bonding of even concentration The agent aqueous solution is equably sprayed in the iron ore material entirety of input, while kneaded, even if therefore in the above-mentioned short time It is interior, it is also possible to be sufficiently mixed binder aqueous solution and iron ore material.

Additionally, using kneading machine in advance when being granulated to the iron ore material based on micro mist, it is necessary to before granulation After reliably kneading adhesive and iron ore material, the mixture is put into comminutor.In the adhesive of above-mentioned patent document 1 In adding method, difference spray adhesive and addition water in comminutor (trommel mixer), but if spray adhesive respectively With addition water, then the adhesive of even concentration can not be equably added in raw material.Based on this point, the bonding of present embodiment Agent adding method is suitable for carrying out the iron ore material based on micro mist the mixed of abundant mixing in the leading portion of granulating working procedure Mill 50.

Additionally, the adhesive used as present embodiment, in order to improve granulation, using can higher ensure iron ore The dispersed polyacrylic dispersant of the micro mist (particulate) in stone raw material.The adhesive adding method of present embodiment can be fitted Share in the adhesive (granulation inorganic agent) containing the polyacrylic dispersant.I.e. it is capable to by even concentration Adhesive is equably added in raw material, thus disperses the micro mist of iron ore material by using adhesive, it is possible to increase make Micro mist is attached to the effect around nuclear particle (coarse grain).Thus, it is possible to compatibly be carried out to the iron ore material containing micro mist Granulation (simulation particle or granulating), can compatibly manufacture appropriate granularity (such as particle diameter is the scope of a few mm~10mm) Granules.

More than, optimal implementation method of the invention has been described in detail referring to the drawings, but the present invention is not limited In the example.Certainly, as long as the personnel of the ABC with the technical field belonging to the present invention, just can be in right In the category of the technological thought described in claim, various modifications or fixed case are associated, these modifications or fixed case are certain It is interpreted as belonging to technology category of the invention.

For example, in the above-described embodiment, to device for adding binder of the invention and adding method are applied to be located at The example of the kneading machine 23,34 on the simulation pelletizing production line 20 of the agglomerating plant shown in Fig. 4, grain granulation production line 30 is carried out Explanation, but the present invention is not limited to the example.Device for adding binder of the invention and adding method are removed and can be used for State beyond kneading machine 23,34, apply also for the arbitrary kneading machine kneaded to the refining raw material for iron such as iron ore material.

Additionally, in the above-described embodiment, by using the mixed adhesive stoste of mixing nozzle 70 and addition water, generating The binder aqueous solution of desired concentration, but, for example, it is also possible to the adhesive for passing through to mix beforehand dilution to normal concentration is molten Liquid and water generate the binder aqueous solution of desired concentration.

Additionally, the structure of mixing nozzle 70 is not limited to the example shown in Fig. 6 and Fig. 7, as long as can equably mix Adhesive and addition water, so that it may which design alteration is into arbitrary structure.

Embodiment

(embodiment 1)

As shown in figure 5, it is described below employ possess device for adding binder kneading machine, employ it is mixed shown in Fig. 6 Close the embodiment of nozzle.Put into iron ore material average out to 200dry-ton/h, the raw material moisture ratio of grain granulation production line Average out to 8%, using polyacrylic dispersant as adhesive, so granulated.(here, shown with average value respectively Iron ore material and raw material moisture ratio, although as it was previously stated, because quantitatively let out lower iron ore material from raw material tank, it is actual If the variation of upper generation dry measure, raw material moisture changes because of keeping state and weather, raw material proportioning etc..)

Granulated by the condition, as a result eliminate in the existing equipment shown in Fig. 3 occur by remaining in pipe arrangement The control of the binder concn that interior binder aqueous solution causes postpones, and can be supplied by setting value.Therefore, even if in adhesive When solid constituent is 0.2% high concentration than Rs, it is also possible to stably continuous operation, manufacture granularity and the appropriate granulation of intensity Thing.

(embodiment 2)

In addition to the mixing nozzle shown in the Fig. 7 in using the present invention, no matter enter under the same conditions as example 1 During row experiment, or slurry is not equally produced when adhesive solids composition is 0.2% high concentration than Rs, can stablized Ground continuous operation, manufactures granularity and the appropriate granules of intensity.

(comparative example)

Using the existing equipment shown in Fig. 3, similarly to Example 1, the iron ore put into grain granulation production line is former Material average out to 200dry-ton/h, raw material moisture ratio average out to 8%, using polyacrylic dispersant as adhesive, such as This is granulated.In this case, even if adhesive solids composition is 0.1% than Rs, also several years generation is because of generation slurry The significant trouble for causing, the delay that controls of the binder concn caused by the binder aqueous solution remained in pipe arrangement is important Problem.

Industrial applicability

By carrying out above-mentioned detailed description by taking the granulation of iron ore material as an example, it can thus be appreciated that the present invention can be in steel Applied in the granulating working procedure of the iron ore material in manufacturing process.In addition, the present invention is not limited to the granulation of iron ore material, Can also be used for the granulation of other materials.

Symbol description

4- adhesion coatings, 23,34,50- kneading machines, 52- main parts, 53- stirring vanes, 54- rotary shafts, 55- raw materials input Portion, 56- delivery sections, 57- iron ore materials, 61- flow control valves, 62- electromagnetic flowmeters, 63- adhesive supply pipes, 64- streams Adjustable valve, 65- electromagnetic flowmeters, 66- feed pipes, 70- mixing nozzles, 71,81- outer nozzles, 72,82- inner nozzles, 74- streams Entrance, 75,85- jet holes, 76,86- jet holes, 84- openings, 87- connecting tubes, 88- flanges, 90- spray nozzles, B- adhesives Stoste, W- addition water, M- binder aqueous solutions.

Claims (16)

1. a kind of adhesive adding method, it is characterised in that in the granulation of iron ore material, will to by adhesive supply pipe and The adhesive and water that feed pipe is supplied respectively to are mixed and the unlimited mixing nozzle of outlet side is arranged on iron ore material It is former to the iron ore in the raw material throw-in part for putting into the kneading machine from the mixing nozzle near the raw material throw-in part of kneading machine The binder aqueous solution that material sprinkling is mixed by described adhesive and the water.

2. adhesive adding method according to claim 1, it is characterised in that the mixing nozzle is by outer nozzle and matches somebody with somebody The dual structure that the inner nozzle being located in the outer nozzle is constituted, institute is connected on a side of the outer nozzle or the inner nozzle State adhesive supply pipe, the feed pipe connected on the nozzle of the opposing party, by for from described adhesive supply pipe to institute The described adhesive of supply in outer nozzle is stated, the water that spraying is supplied by the feed pipe mixes institute in the outer nozzle Adhesive and the water are stated, the described adhesive aqueous solution is generated, the iron ore material is sprayed from the jet hole of the outer nozzle Spill the described adhesive aqueous solution.

3. adhesive adding method according to claim 2, it is characterised in that described adhesive supply pipe and insertion landform Inflow entrance connection on the side of outer nozzle described in Cheng Yu, the feed pipe is communicatively connected with the inner nozzle, by for The described adhesive in the outer nozzle is ejected into from the inflow entrance of the outer nozzle, is sprayed from the jet hole of the inner nozzle Water described in mist, the water is blended in described adhesive, generates the described adhesive aqueous solution.

4. adhesive adding method according to claim 2, it is characterised in that the feed pipe is formed at institute with insertion State the opening connection on the side of outer nozzle, described adhesive supply pipe is communicatively connected with the inner nozzle, by for from The jet hole of the inner nozzle is ejected into the described adhesive in the outer nozzle, from the opening spraying institute of the outer nozzle Water is stated, the water is blended in described adhesive, generate the described adhesive aqueous solution.

5. the adhesive adding method according to any one of Claims 1 to 4, it is characterised in that described adhesive is poly- Dispersant containing acrylic.

6. according to the adhesive adding method that any one of Claims 1 to 4 is described, it is characterised in that according to the iron ore Moisture or the iron ore material contained by stone raw material to the input amount of the kneading machine, control described adhesive supply pipe or The flow of either one in the feed pipe.

7. adhesive adding method according to claim 5, it is characterised in that according to contained by the iron ore material Moisture or the iron ore material to the input amount of the kneading machine, in control described adhesive supply pipe or the feed pipe The flow of either one.

8. a kind of device for adding binder, it is characterised in that possess and the viscous of adhesive is supplied in the comminutor of iron ore material The feed pipe and mixing nozzle of mixture supply pipe, supply water, the mixing nozzle are arranged on the kneading machine of iron ore material Near raw material throw-in part, described adhesive and the water to being supplied respectively to by described adhesive supply pipe and the feed pipe are entered Row mixing, and the outlet side of the mixing nozzle is unlimited；Raw material throw-in part of the mixing nozzle to the input kneading machine In iron ore material sprinkling by described adhesive and the water mixing and generate binder aqueous solution.

9. device for adding binder according to claim 8, it is characterised in that the mixing nozzle is by outer nozzle and matches somebody with somebody The dual structure that the inner nozzle being located in the outer nozzle is constituted, institute is connected on a side of the outer nozzle or the inner nozzle State adhesive supply pipe, the feed pipe connected on the nozzle of the opposing party, by for from described adhesive supply pipe to institute The described adhesive of supply in outer nozzle is stated, the water that spraying is supplied by the feed pipe mixes institute in the outer nozzle Adhesive and the water are stated, the described adhesive aqueous solution is generated, the iron ore material is sprayed from the jet hole of the outer nozzle Spill the described adhesive aqueous solution.

10. device for adding binder according to claim 9, it is characterised in that described adhesive supply pipe and insertion ground The inflow entrance connection on the side of the outer nozzle is formed at, the feed pipe is communicatively connected with the inner nozzle, by right In the described adhesive being ejected into from the inflow entrance of the outer nozzle in the outer nozzle, from the jet hole of the inner nozzle Spray the water, the water is blended in described adhesive, generate the described adhesive aqueous solution.

11. device for adding binder according to claim 9, it is characterised in that the feed pipe is formed at insertion Opening connection on the side of the outer nozzle, described adhesive supply pipe is communicatively connected with the inner nozzle, by for The described adhesive in the outer nozzle is ejected into from the jet hole of the inner nozzle, is sprayed from the opening of the outer nozzle The water, the water is blended in described adhesive, generates the described adhesive aqueous solution.

12. according to the described device for adding binder of any one of claim 8~11, it is characterised in that described adhesive It is polyacrylic dispersant.

13. according to the described device for adding binder of any one of claim 8~11, it is characterised in that be also equipped with control The input of portion, moisture of the control unit according to contained by the iron ore material or the iron ore material to the kneading machine Amount, is controlled to the flow of either one in described adhesive supply pipe or the feed pipe.

14. device for adding binder according to claim 12, it is characterised in that be also equipped with control unit, the control unit Moisture or the iron ore material according to contained by the iron ore material to the input amount of the kneading machine, to the bonding The flow of either one in agent supply pipe or the feed pipe is controlled.

15. a kind of kneading machines, it is characterised in that possess the described device for adding binder of any one of claim 8~14.

16. a kind of compounding process, it is characterised in that using the described adhesive addition dress of any one of claim 8~14 Put, while to putting into the iron ore material spray adhesive aqueous solution in the raw material throw-in part of kneading machine, while described mixed The mixing iron ore material in mill.