CN107429182A - The method and apparatus for preparing moulded coal - Google Patents
The method and apparatus for preparing moulded coal Download PDFInfo
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- CN107429182A CN107429182A CN201680020432.6A CN201680020432A CN107429182A CN 107429182 A CN107429182 A CN 107429182A CN 201680020432 A CN201680020432 A CN 201680020432A CN 107429182 A CN107429182 A CN 107429182A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
- C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
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- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Water content detection step after the method for preparing moulded coal of one embodiment of the present of invention includes coal charge preparation process, coal charge drying steps, the drying that is detected to the moisture by being included in dry coal charge, provide the mixture mixed by dry coal charge with one or more of curing agent and adhesive to step and the moulded coal preparation process for being molded mixture.Moisture is added in mixture provides step, the desired value of predetermined moisture is reached with the moisture detected in the water content detection step after drying.
Description
Technical field
The present invention relates to a kind of method and apparatus for preparing moulded coal.In particular it relates to prepare cold strength inclined for one kind
The method and apparatus of the small moulded coal of subtractive.
Background technology
Used in melting reduction iron-smelting method for the reduction furnace of reducing iron ore and for melting the iron ore by reduction
The melting gasification furnace of stone.When iron ore is melted in melting gasification furnace, moulded coal is loaded into melting as the thermal source of fusing iron ore
In gasification furnace.Reduced iron is converted into after molten iron and slag in melting gasification furnace by fusing, is discharged to outside.Filled
The moulded coal for entering melting gasification furnace forms coal packed bed.After oxygen is blown into by the air port being arranged on melting gasification furnace, burning
Coal packed bed and generate burning gases.Burning gases are converted into high-temperature reducing gas while rising by coal packed bed.High temperature
Reducing gas is expelled to the outside of melting gasification furnace, and is supplied to reduction furnace as reducing gas.
A large amount of moulded coals are needed in order to largely produce molten iron, therefore prepared moulded coal is deposited under open-air atmosphere.This
In the case of, external impact can cause moulded coal to crush, it is therefore desirable to improve the cold strength of moulded coal.In addition, when the cold strength of moulded coal is inclined
When difference is big, the operation in melting gasification furnace may be caused to change, it is therefore desirable to reduce the cold strength deviation of moulded coal.
The content of the invention
Technical problem
The present invention provides a kind of method and apparatus for preparing the moulded coal that cold strength is excellent and cold strength deviation reduces.
Technical scheme
The method for preparing moulded coal of one embodiment of the present of invention includes：Coal charge preparation process, coal charge drying steps, to warp
Cross in dry coal charge water content detection step after the drying that the moisture included is detected, will by dry coal charge with it is solid
The mixture that one or more of agent and adhesive are mixed provides step and the moulded coal system for being molded mixture
Standby step.Moisture can be added in mixture provides step, be contained with the moisture detected in the water content detection step after drying
Amount reaches the desired value of predetermined moisture.
Before coal charge drying steps, it can also be detected comprising the moisture to being included in the coal charge of preparation dry
Dry preceding water content detection step.
In coal charge drying steps, it can be dried to include 4 weight % to 7 weights relative to 100 weight % total coal charge
% moisture is measured, or can be dried to include 5 weight % to 8 weight % moisture.
Desired value can be the moisture for including 6 weight % to 8 weight % relative to 100 weight % coal charge, more specifically
Moisture comprising 7 weight % to 8 weight %.
There is provided the mixture mixed by dry coal charge with one or more of curing agent and adhesive to step
Step is provided comprising the first mixture for being mixed the coal charge by drying with curing agent and by the first mixture with bonding
The second mixture that agent is mixed provides step, can add moisture in the second mixture provides step so that moisture from
The moisture detected reaches the desired value of predetermined moisture.
After coal charge preparation process, coal charge destruction step can also be included.
The device for preparing moulded coal of one embodiment of the present of invention includes：Coal charge accumulator tank, the coal charge accumulator tank are used for
Store coal charge；Drying machine, the drying machine are connected to coal charge accumulator tank, for coal charge to be dried；Drying machine rear end moisture
Detection means, drying machine rear end moisture content detection device are arranged on drying machine rear end；Curing agent accumulator tank, the curing agent storage
Groove is deposited to be used to store curing agent；Adhesive accumulator tank, described adhesive accumulator tank are used to store adhesive；Mixer, it is described mixed
Conjunction machine is by the coal charge by drying provided by drying machine, the curing agent provided by curing agent accumulator tank and by adhesive accumulator tank
The adhesive of offer is mixed and provides mixture；Moisture supply nozzle, the moisture supply nozzle are arranged in mixer；
Control unit, described control unit are controlled from drying machine rear end moisture content detection device reception signal to moisture supply nozzle,
So that moisture reaches predetermined desired value；And forming machine, the forming machine receive mixture from mixer and will mixing
Thing is molded.
Moisture supply nozzle could be arranged to multiple in mixer.
The device for preparing moulded coal can also include drying machine front end moisture content detection device, drying machine front end moisture
Detection means is arranged on drying machine front end.
The device for preparing moulded coal can also include drying machine control unit, and the drying machine control unit is from drying machine
Front end moisture content detection device reception signal is controlled to the heat of drying machine, so that moisture is relative to 100 weight %'s
Total coal charge reaches 5 weight % to 8 weight %.
Mixer includes the first mixer and the second mixer, and the first mixer is connected with curing agent accumulator tank, and second is mixed
Conjunction machine is connected with adhesive accumulator tank, and moisture supply nozzle can be arranged in the second mixer.
The disintegrating machine for being used for crushing coal charge can also be included between coal charge accumulator tank and drying machine.
Control unit controls desired value in the water for including 6 weight % to 8 weight % into the coal charge relative to 100 weight %
Point.
Invention effect
By the way that the water tariff collection included in coal charge is certain, the cold strength deviation of moulded coal can be reduced.In addition, by will be with
The cold strength deviation that moisture change drastically changes to minimize, it is possible to reduce the combustion being responsible in the melting gasification furnace of production molten iron
Material expense.
Brief description of the drawings
Fig. 1 is the indicative flowchart of the method for preparing moulded coal of one embodiment of the present of invention.
Fig. 2 is the schematic diagram of the device for preparing moulded coal of one embodiment of the present of invention.
Fig. 3 is the schematic diagram of the device for preparing moulded coal of an alternative embodiment of the invention.
Fig. 4 is the schematic diagram for the molten iron preparation facilities for using the moulded coal prepared in Fig. 1.
Fig. 5 is the schematic diagram for another molten iron preparation facilities for using the moulded coal prepared in Fig. 1.
Embodiment
The terms first, second, third, etc. are used to describe various parts, composition, region, layer and/or section, but these
Partly, composition, region, layer and/or section should not be limited by these terms.These terms be only used for distinguishing certain part, composition,
Region, layer and/or section and another part, composition, region, layer and/or section.Therefore, without departing from the scope of the present invention, below
Part I, composition, region, layer and/or the section of description can also be described as Part II, composition, region, layer and/or section.
Term as used herein is simply not intended to the limitation present invention for description particular.Unless context
In separately provide obvious opposite implication, otherwise singulative used herein is also intended to comprising plural form.It should also be appreciated that
, term "comprising" can refer specifically to a certain characteristic, field, integer, step, action, key element and/or composition, but also not arrange
Except the presence or additional of other characteristics, field, integer, step, action, key element, composition and/or group.
Although without separately defining, the implication of all terms (including technical term and scientific terminology) used herein with
Those skilled in the art is generally understood that equivalent in meaning.For the term being defined inside dictionary, it should be interpreted have
Have the meaning consistent with relevant technical literature and content disclosed herein, without should with idealization or overly formal implication
To explain their meaning.
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art easily implements this
Invention.The present invention can be implemented in a variety of different ways, it is not limited to following embodiments.
Fig. 1 schematically shows the flow chart of the method for preparing moulded coal of one embodiment of the present of invention.Fig. 1 preparation
The flow chart of the method for moulded coal is only used for illustrating the present invention, and the invention is not restricted to this.Therefore, the method for preparing moulded coal can be entered
Row various modifications.
As shown in figure 1, the method for preparing moulded coal includes：Coal charge preparation process S10, coal charge drying steps S20, to through overdrying
Step S30 that the moisture included in dry coal charge is detected, will be by dry coal charge and curing agent and adhesive
More than one mixtures mixed the step S40 and moulded coal preparation process S50 that is molded mixture is provided.
Moisture is added in mixture provides step S40, so that moisture reaches predetermined desired value.In addition, as needed
Other steps can also be included by preparing the method for moulded coal.
First, coal charge is prepared in step slo.Generally, coal charge is divided into the mud that phosphorus content is about 60% according to carbonizing degree
Sub- pitch coal that the brown lignite and lignite, phosphorus content that coal, phosphorus content are about 70% are about 70% to 80%, phosphorus content are about 80%
The anthracite that pitch coal, phosphorus content to 90% are about more than 90%.The species of coal charge is not particularly limited, can be used single
One coal charge is used in mixed way various coal charges.
After step slo, coal charge destruction step can also be included.In order to reduce mass deviation, coal charge can be crushed
The granularity of coal charge particle into after crushing keeps certain.As specific standards, it is accounting for for below 5mm that can be broken into granularity
90wt% to 100wt%.
Next, coal charge is dried in step S20.In coal charge drying steps, it can be dried to relative to 100
Weight % total coal charge includes 4 weight % to 7 weight % moisture, or can be dried to comprising 5 weight % to 8 weight %'s
Moisture.
Specifically, before step S20, the moisture that can also include the coal charge to preparing in step S10 is examined
Water content detection step before the drying of survey.Pass through the moisture set-up procedure S20 by being detected in water content detection step before drying
In drying heat or drying time etc., the moisture in the coal charge by drying can be adjusted.Pass through aftermentioned step S30
In the feedback (Feedback) of moisture that detects dry heat or drying time can also be adjusted.
Method for being detected in water content detection step before drying to the moisture of the coal charge of preparation, can be used
Microwave irradiation type moisture detector, or detected manually again after can directly being sampled with manpower to coal charge.Shone using microwave
The mode of emitting moisture detector can be detected in real time, but can be gone out according to conditions such as the granularity of coal charge, the density of coal charge
Existing sensitivity response, therefore the problem of reliability is not high be present.In addition, if using manpower, will exist inclined between operator
Difference, it can also bring the live load of operator.Therefore, when coal charge being dried in step S20 and in aftermentioned step S40
When being added without moisture, the deviation of moisture can become big between coal charge.
Moisture after following step S30 is the drying detected to the moisture by being included in dry coal charge
Detecting step.Specifically, for the moisture detecting method by dry coal charge, can use be widely used as common aqueous and examine
The microwave irradiation type continous way detector of instrument is surveyed, or operator can be manually to adopting by dry coal charge
Drying machine is put into after sample periodically to be detected.
Then, in step s 40, will be mixed by dry coal charge with one or more of curing agent and adhesive
And provide mixture.
CaO, Ca (OH) can be used as curing agent2、MgO、Mg(OH)2、Na2O、NaOH、K2O, KOH etc..Relative to total
Mixture, the amount of curing agent can be 1wt% to 5wt%.When the amount of curing agent is very few, adhesive and curing agent will not be well
With reference to so as to can not fully increase the intensity of prepared moulded coal.In addition, when the amount of curing agent is excessive, the ash content in moulded coal
It can increase, so as to can not fully produce the heat needed for reduced iron fusing in melting gasification furnace.Therefore, by the amount of curing agent
Control is in foregoing scope.
Molasses, raw sugar, cellulose, starch or pitch (bitumen) etc. can be used as adhesive.The amount of adhesive can
To be mixed into the 3wt% of total mixture to 15wt%.When the amount of adhesive is very few, the intensity of moulded coal can be deteriorated.In addition, when viscous
When the amount of mixture is excessive, the problems such as will being adhered to when mixing fine coal and adhesive.Therefore, the amount control of adhesive is existed
Aforementioned range.
Moisture is added in step s 40, so that moisture reaches predetermined desired value.Specifically, the water of deficiency is added
Point, predetermined desired value is reached with the moisture detected from step S30.Now, predetermined desired value can be relative
The weight % of moisture 6 to 8 weight % is included in total weight % of coal charge 100, more specifically comprising the weight % of moisture 7 to 8 weight %.Such as
The content of moisture is very few in fruit coal charge, and the problem of can not characterizing sufficient cold strength just occurs.In addition, if moisture in coal charge
Too high levels, be just difficult to from feeding mechanism regular supply to format roll, there is also produce low-density concave point moulded coal or
The problem of moulded coal adhesion occurs in format roll.Therefore, desired value is controlled in aforementioned range.
Step S40 can include by the first mixture mixed by dry coal charge with curing agent provide step and
The second mixture that first mixture is mixed with adhesive provides step.In this way, by the way that blend step is divided into two
Step, more uniform mixture can be prepared.
When step S40 being divided into two steps being mixed, moisture can be added in the second mixture provides step, with
Further reduce coal charge between moisture deviation.
Finally, mixture is molded in step s 50 and prepares moulded coal.Step S40 is divided into two steps to carry out
During mixing, the second mixture is molded and prepares moulded coal.It is not seen in fig. 1, fill this blend into rotation reversely with each other
Between the double roller turned, so as to prepare fritter (pocket) or strip molded coal.As a result, can prepare with excellent heat
The moulded coal of intensity and cold strength.
Fig. 2 schematically shows the device for preparing moulded coal of one embodiment of the present of invention.Fig. 2 dress for preparing moulded coal
Put and be only used for illustrating the present invention, the invention is not restricted to this.Therefore, various modifications can be carried out to the device for preparing moulded coal.
As shown in Fig. 2 the device for preparing moulded coal includes：Coal charge accumulator tank 10, the coal charge accumulator tank 10 are used to store coal
Material；Drying machine 40, the drying machine 40 is connected to coal charge accumulator tank 10, for coal charge to be dried；Drying machine rear end moisture
Detection means 50, drying machine rear end moisture content detection device 50 are arranged on the rear end of drying machine 40；Curing agent accumulator tank 20, it is described
Curing agent accumulator tank 20 is used to store curing agent；Adhesive accumulator tank 30, described adhesive accumulator tank 30 are used to store adhesive；
Mixer 60, what the mixer 60 provided by the coal charge by drying provided by drying machine 40, by curing agent accumulator tank 20
Curing agent and the adhesive provided by adhesive accumulator tank 30 are mixed and provide mixture；Moisture supply nozzle 70, it is described
Moisture supply nozzle 70 is arranged in mixer 60；Control unit 80, described control unit 80 is from drying machine rear end water content detection
The reception signal of device 50 is controlled to moisture supply nozzle 70, so that moisture reaches predetermined desired value；And shaping
Machine 90, the forming machine 90 receive mixture from mixer 60 and are molded mixture.In Fig. 2 device for preparing moulded coal
Comprising each machine concrete structure and operating method be that those skilled in the art are readily appreciated that, because
Description is omitted for this.
Coal charge accumulator tank 10 stores coal charge.Generally, coal charge is divided into mud coal that phosphorus content is about 60% according to carbonizing degree, contained
Sub- pitch coal that the brown lignite and lignite, phosphorus content that carbon amounts is about 70% are about 70% to 80%, phosphorus content be about 80% to
90% pitch coal, the anthracite that phosphorus content is about more than 90%.The species of coal charge is not particularly limited, can be used single
Coal charge is used in mixed way various coal charges.
Further disintegrating machine can be set between coal charge accumulator tank 10 and drying machine 40.In order to reduce mass deviation, break
The granularity that coal charge can be broken into the coal charge particle after crushing by broken machine keeps certain.As specific standards, granulating can be crushed
Spend and account for 90wt% to 100wt% for below 5mm.
Drying machine 40 is connected with coal charge accumulator tank 10, and the coal charge supplied by coal charge accumulator tank 10 is dried.It is if broken
Broken machine is arranged between coal charge accumulator tank 10 and drying machine 40, then the coal charge supplied by disintegrating machine is dried.
Before the drying machine that is detected to the moisture of the coal charge of storage is may be provided in the front end of drying machine 40
Moisture content detection device is held, may be provided for the drying machine control unit being controlled to the heat of drying machine 40.Drying machine
Control unit can be controlled from drying machine front end moisture content detection device reception signal to the heat of drying machine, so that moisture contains
Amount reaches 5 weight % to 8 weight % relative to 100 weight % total coal charge.Drying machine control unit can be from the drying machine
While the moisture content detection device reception signal of front end, receive and feed back from aftermentioned drying machine rear end moisture content detection device 50, with to dry
The heat of dry machine 40 is controlled.
The drying machine rear end detected to the moisture by dry coal charge is provided in the rear end of drying machine 40
Moisture content detection device 50.Drying machine rear end moisture content detection device 50 is not particularly limited, but can use and generally be widely used in
Detect the microwave irradiation type continous way infrared moisture detector of moisture or the continous way moisture detector using neutron, Huo Zheke
To use operator to detect water grading mode in drying machine after sampling manually.Detected by drying machine rear end moisture content detection device 50
The moisture gone out is sent to control unit 80, and control unit 80 is from the reception signal of drying machine rear end moisture content detection device 50 to water
Supply nozzle 70 is divided to be controlled, so that moisture reaches predetermined desired value.Now, desired value is relative to 100 weights
Amount % total coal charge includes 6 weight % to 8 weight % moisture.
The curing agent for passing through dry coal charge, being provided by curing agent accumulator tank 20 that mixer 60 will be provided by drying machine 40
And the adhesive provided by adhesive accumulator tank 30 is mixed and provides mixture.In addition, it is provided with moisture in mixer 60
Supply nozzle 70, moisture supply nozzle 70 adds moisture, so that the moisture in coal charge reaches desired value.In order to mixer
Coal charge in 60 equably supplies moisture, and moisture supply nozzle 70 can set multiple.
Mixer 60 can include the first mixer 61 and the second mixer 62, and first mixer 61 will be by drying machine
40 curing agent for passing through dry coal charge and being provided by curing agent accumulator tank 20 provided are mixed and provide the first mixture,
Second mixer 62 is by the first mixture provided by the first mixer 61 and the bonding provided by adhesive accumulator tank 30
Agent is mixed and provides the second mixture.Therefore, the first mixer 61 is connected with curing agent accumulator tank 20, and the second mixer
62 are connected with adhesive accumulator tank 30.
What Fig. 3 schematically showed an alternative embodiment of the invention prepares the device of moulded coal, and shows mixing
Machine 60 includes the example of the first mixer 61 and the second mixer 62.When comprising the first mixer 61 and during the second mixer 62,
In order to further reduce the deviation of moisture between coal charge, moisture supply nozzle 70 can be arranged in the second mixer 62.
Forming machine 90 receives mixture from mixer 60 and is molded mixture.Specifically, forming machine 90 is by each other
The double roller composition of reverse rotation, can fill this blend between double roller and be shaped to small block or strip.
Fig. 4 schematically shows the molten iron preparation facilities 100 using the moulded coal prepared in Fig. 1.Fig. 4 molten iron prepares dress
The structure for putting 100 is only used for the illustration present invention, and the invention is not restricted to this.Therefore, Fig. 4 molten iron preparation facilities 100 can be become
Shape is various forms.
Fig. 4 molten iron preparation facilities 100 includes melting gasification furnace 110 and reduction furnace 120.In addition, as needed also
Other devices can be included.Load iron ore in reduction furnace 120 to be reduced.After the iron ore of loading reduction furnace 120 is first dried
Reduced iron is reduced into through reduction furnace 120.Reduction furnace 120 is packed bed reduction furnace, and also Primordial Qi is received from melting gasification furnace 110
Body.
Melting gasification furnace 110 is loaded come the moulded coal prepared by Fig. 1 preparation method, thus in melting gasification furnace 110
Inside can form coal packed bed.The top of melting gasification furnace 110 is formed with dome portion 101, other portions with melting gasification furnace 110
Split-phase is than forming wider space, wherein high-temperature reducing gas be present.Therefore, because high-temperature reducing gas, loads dome portion 101
Moulded coal easily decompose.The lower section of melting gasification furnace 110 is moved to and caused coal tar by the pyrolytic reaction of moulded coal and passes through wind
The oxygen of the supply of mouth 130 carry out exothermic reactions.Therefore, moulded coal can be as the thermal source that melting gasification furnace 110 is kept to high temperature
Use.In addition, coal tar provides gas permeability, therefore in a large amount of gases caused by the lower section of melting gasification furnace 110 and from reduction furnace 120
The reduced iron of supply can be easier and uniformly across the coal packed bed in melting gasification furnace 110.Pass through Fig. 1 preparation method
Moulded coal to prepare minimizes the cold strength deviation drastically changed with moisture change, so as to reduce melting gasification furnace
Fuel cost in 110.
In addition to described moulded coal, lump coal or coking coal can also be loaded into melting gasification furnace 110 as needed.Melt gas
Change and set air port 130 to be used to be blown into oxygen on the outer wall of stove 110.Oxygen is blown into coal packed bed and forms combustion zone.Moulded coal exists
Combustion zone burning can produce reducing gas.
Fig. 5 schematically shows the molten iron preparation facilities 200 using the moulded coal prepared in Fig. 1.Fig. 5 molten iron prepares dress
The structure for putting 200 is only used for the illustration present invention, and the invention is not restricted to this.Therefore, Fig. 5 molten iron preparation facilities 200 can be become
Shape is various forms.The structure of Fig. 5 molten iron preparation facilities 200 is similar with the structure of Fig. 4 molten iron preparation facilities 100, therefore
Identical part is using identical reference and description is omitted.
As shown in figure 5, molten iron preparation facilities 200 includes melting gasification furnace 110, reduction furnace 122, reduced iron compression set
140 and compression reduced iron accumulator tank 150, wherein compression reduced iron accumulator tank 150 can omit.
Prepared moulded coal loads melting gasification furnace 110.Moulded coal produces reducing gas in melting gasification furnace 110, and produces
Reducing gas be fed to fluidized bed reduction furnace.Powder Supply of iron ore passes through to multiple reduction furnaces 122 with fluid bed, powder iron ore
The reducing gas flowing of reduction furnace 122 is fed to from melting gasification furnace 110 and is reduced into reduced iron.Reduced iron passes through reduced iron pressure
Compression apparatus 140 is stored into compression reduced iron accumulator tank 150 after being compressed.The reduced iron compressed from compression reduced iron accumulator tank
150 are fed to melting gasification furnace 110 and are melted in melting gasification furnace 110.Moulded coal is fed to melting gasification furnace 110 and is transformed into tool
There is the coal tar of gas permeability, therefore can more hold in a large amount of gases caused by the lower section of melting gasification furnace 110 and the reduced iron compressed
Easily and uniformly across the coal packed bed in melting gasification furnace 110, so as to prepare high-quality molten iron.
The preferred embodiments of the present invention and comparative example are described below.However, following embodiments are the preferential of the present invention
One embodiment, the invention is not restricted to following embodiments.
Embodiment
Moisture is detected in real time with microwave irradiation type moisture detector to the coal charge of preparation, heat is adjusted according to testing result
Amount is dried.Now, it is adjusted to make moisture relative to 100 weight % total coal charge close to 6.5 weight % heat.It is right
Moisture is detected in real time with microwave irradiation type moisture detector by dry coal charge, and by being mixed into dry coal charge
Curing agent and adhesive, the combined amount as the CaO of curing agent relative to 100 weight % total mixture is 3 weight %, as
The combined amount of the molasses of adhesive is 10 weight % relative to 100 weight % total mixture, based in adhesive mixed process
The moisture testing result of dried coal charge, moisture is supplied by moisture supply nozzle, so that the desired value of moisture
Reach 7.5 weight % relative to 100 weight % total coal charge.Mixture is compressed agglomerate shape is made by roll squeezer
Moulded coal.
The content of moisture is detected after being sampled respectively according to each step, the results are shown in table 1 below.
【Table 1】
As shown in table 1, the deviation of the moisture after drying in coal charge is relatively large, but adds in adhesive mixed process
After entering moisture, the deviation of the moisture before shaping in coal charge is relatively small.
Comparative example
Moisture is detected in real time with microwave irradiation type moisture detector to the coal charge of preparation, heat is adjusted according to testing result
Amount is dried.Now, it is adjusted to make moisture relative to total weight % of coal charge 100 close to 7.5 weight % heat.By
Be mixed into curing agent and adhesive in dry coal charge, as curing agent CaO combined amount relative to 100 weight % total mixing
Thing is 3 weight %, and the combined amount as the molasses of adhesive relative to 100 weight % total mixture is 10 weight %.Will be mixed
Compound is compressed by roll squeezer the moulded coal of agglomerate shape is made.
The content of moisture is detected after being sampled respectively according to each step, the results are shown in table 2 below.
【Table 2】
As shown in table 2, the moisture before shaping in coal charge is average similar with embodiment, but the deviation phase of moisture
To more than embodiment.
Experimental example：The evaluation of cold strength
The moulded coal prepared respectively in each five embodiments and comparative example is arbitrarily chosen, after fixed below moulded coal, with one
Constant speed degree presses above, and measures the crest untill moulded coal crushes, and the results are shown in table 3 below.
【Table 3】
As shown in table 3, the cold strength of the moulded coal prepared in embodiment and comparative example it is average similar, but in embodiment
The cold strength deviation of the moulded coal of preparation is small, and the cold strength deviation of the moulded coal prepared in comparative example is big.
The present invention can implement to be not limited to described embodiment, the ordinary skill people of art in a variety of different ways
Member is appreciated that by other concrete modes to implement in the case where not changing the technological thought of the present invention or essential feature
The present invention.It will therefore be appreciated that embodiment described above is exemplary, rather than for limiting the present invention's.
Symbol description
10：Coal charge accumulator tank 20：Curing agent accumulator tank
30：Adhesive accumulator tank 40：Drying machine
50：Drying machine rear end moisture content detection device 60：Mixer
61：First mixer 62：Second mixer
70：Moisture supply nozzle 80：Control unit
90：Forming machine 110：Melting gasification furnace
120、122：Reduction furnace 130：Air port
140：Reduced iron compression set 150：Compress reduced iron accumulator tank
100、200：Molten iron preparation facilities 101：Dome portion
Claims (13)
1. a kind of method for preparing moulded coal, this method include：
Coal charge preparation process；
The drying steps of the coal charge；
Water content detection step after the drying detected to the moisture by being included in dry coal charge；
There is provided the mixture mixed by dry coal charge with one or more of curing agent and adhesive to step；
And
The moulded coal preparation process being molded to the mixture,
Moisture wherein is added in the mixture provides step, so that moisture is from water content detection step after the drying
The moisture detected reaches the desired value of predetermined moisture.
2. the method according to claim 1 for preparing moulded coal, wherein,
Before the drying steps of the coal charge, the drying detected to the moisture included in the coal charge of preparation is also included
Preceding water content detection step.
3. the method according to claim 1 for preparing moulded coal, wherein,
In the drying steps of the coal charge, coal charge is dried to include 5 weight % to 8 relative to 100 weight % total coal charge
Weight % moisture.
4. the method according to claim 1 for preparing moulded coal, wherein,
The desired value is the moisture for including 6 weight % to 8 weight % relative to 100 weight % total coal charge.
5. the method according to claim 1 for preparing moulded coal, wherein,
The mixture mixed with one or more of curing agent and adhesive by dry coal charge is provided to step to include
There is provided first mixture mixed by dry coal charge with the curing agent to step and mixed described first
The second mixture that thing is mixed with described adhesive provides step,
Moisture is added in second mixture provides step, so that moisture reaches predetermined from the moisture detected
Moisture desired value.
6. the method according to claim 1 for preparing moulded coal, wherein,
After the coal charge preparation process, also comprising coal charge destruction step.
7. a kind of device for preparing moulded coal, the device include：
Coal charge accumulator tank, the coal charge accumulator tank are used to store coal charge；
Drying machine, the drying machine is connected to the coal charge accumulator tank, for coal charge to be dried；
Drying machine rear end moisture content detection device, drying machine rear end moisture content detection device are arranged on the rear end of the drying machine；
Curing agent accumulator tank, the curing agent accumulator tank are used to store curing agent；
Adhesive accumulator tank, described adhesive accumulator tank are used to store adhesive；
Mixer, the mixer carry what is provided by the drying machine by dry coal charge, by the curing agent accumulator tank
The curing agent of confession and the adhesive provided by described adhesive accumulator tank are mixed and provide mixture；
Moisture supply nozzle, the moisture supply nozzle are arranged in the mixer；
Control unit, described control unit are sprayed from the drying machine rear end moisture content detection device reception signal to the moisture supply
Mouth is controlled, so that moisture reaches predetermined desired value；And
Forming machine, the forming machine receive mixture from the mixer and are molded the mixture.
8. the device according to claim 7 for preparing moulded coal, wherein,
The moisture supply nozzle is arranged to multiple in the mixer.
9. the device according to claim 7 for preparing moulded coal, the device also include：
Drying machine front end moisture content detection device, drying machine front end moisture content detection device are arranged on the front end of the drying machine.
10. the device according to claim 9 for preparing moulded coal, the device also include：
Drying machine control unit, the drying machine control unit is from the drying machine front end moisture content detection device reception signal to institute
The heat for stating drying machine is controlled, so that moisture reaches 5 weight % to 8 weights relative to 100 weight % total coal charge
Measure %.
11. the device according to claim 7 for preparing moulded coal, wherein,
The mixer includes the first mixer and the second mixer,
First mixer is connected with the curing agent accumulator tank,
Second mixer is connected with described adhesive accumulator tank,
The moisture supply nozzle is arranged in second mixer.
12. the device according to claim 7 for preparing moulded coal, wherein,
The disintegrating machine for being used for crushing coal charge is also included between the coal charge accumulator tank and the drying machine.
13. the device according to claim 7 for preparing moulded coal, wherein,
The desired value is controlled into relative to 100 weight % total coal charge and includes 6 weight % to 8 weight % by described control unit
Moisture.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150051027A KR101709202B1 (en) | 2015-04-10 | 2015-04-10 | Method and apparatus for manufacturing coal briquettes |
| KR10-2015-0051027 | 2015-04-10 | ||
| PCT/KR2016/003261 WO2016163679A1 (en) | 2015-04-10 | 2016-03-30 | Method for manufacturing coal briquettes and apparatus for manufacturing coal briquettes |
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| CN107429182A true CN107429182A (en) | 2017-12-01 |
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| KR (1) | KR101709202B1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652083A (en) * | 2022-12-12 | 2023-01-31 | 中冶长天国际工程有限责任公司 | Multi-stage air inlet soaking reduction method for iron-containing material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101191088A (en) * | 2006-11-21 | 2008-06-04 | 宝山钢铁股份有限公司 | Moulded coal and preparation method thereof |
| CN102230046A (en) * | 2004-01-26 | 2011-11-02 | Posco公司 | A method for manufacturing briquettes directly using coal with wide range of size |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100905581B1 (en) * | 2001-12-21 | 2009-07-02 | 주식회사 포스코 | Coal Briquettes For Iron and Steel Making Process, Method Of Manufacturing Thereof |
| KR100910513B1 (en) * | 2007-10-15 | 2009-07-31 | 주식회사 포스코 | Method and apparatus thereof for manufacturing coal briquette used of by-product of material |
| KR101245695B1 (en) * | 2010-07-22 | 2013-03-25 | 주식회사 포스코 | System for manufacturing high strength coal briquette and method thereof it |
| KR101287872B1 (en) * | 2010-07-22 | 2013-07-18 | 주식회사 포스코 | High strength coal briquette |
| KR101405478B1 (en) * | 2012-12-26 | 2014-06-11 | 주식회사 포스코 | Method for manufacturing coal bruquettes and apparatus for the same |
-
2015
- 2015-04-10 KR KR1020150051027A patent/KR101709202B1/en active IP Right Grant
-
2016
- 2016-03-30 WO PCT/KR2016/003261 patent/WO2016163679A1/en active Application Filing
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230046A (en) * | 2004-01-26 | 2011-11-02 | Posco公司 | A method for manufacturing briquettes directly using coal with wide range of size |
| CN101191088A (en) * | 2006-11-21 | 2008-06-04 | 宝山钢铁股份有限公司 | Moulded coal and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 孙玉秀等: "《粘合剂配方与制备》", 30 November 2015, 中国纺织出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652083A (en) * | 2022-12-12 | 2023-01-31 | 中冶长天国际工程有限责任公司 | Multi-stage air inlet soaking reduction method for iron-containing material |
| CN115652083B (en) * | 2022-12-12 | 2023-04-28 | 中冶长天国际工程有限责任公司 | Multistage air inlet soaking reduction method for iron-containing material |
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| WO2016163679A1 (en) | 2016-10-13 |
| KR20160121258A (en) | 2016-10-19 |
| KR101709202B1 (en) | 2017-03-08 |
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