CN104607296B - Ilmenite beneficiation method and equipment - Google Patents
Ilmenite beneficiation method and equipment Download PDFInfo
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- CN104607296B CN104607296B CN201510056646.6A CN201510056646A CN104607296B CN 104607296 B CN104607296 B CN 104607296B CN 201510056646 A CN201510056646 A CN 201510056646A CN 104607296 B CN104607296 B CN 104607296B
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- ferrotianium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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Abstract
The invention provides an ilmenite beneficiation method and equipment, and is suitable for comprehensive utilization of low grade ilmenite resources. The method and the equipment provided by the invention can be used for separating materials by fully using three kinds of physical differences of useful components in ilmenite magnetic iron and ferrotitanium and useless gangues, such as magnetism, density and surface hydrophilicity, as well as the property of the stage degree of dissociation. In the whole separating process, by using a magnetic-gravity separation-flotation combined process, the magnetic iron which is the strongest in magnetism is separated by using a magnetic separating method firstly, and then the ferrotitanium is selected by using a method of gravity separation combined with strong magnetic combined flotation. In the whole separating process, a graded ore grinding and graded beneficiation method is adopted, and in the process of separating the ferrotitanium, ore is secondarily ground, so that the ferrotitanium containing part of impurities after strong magnetism in the first stage is further dissociated, and therefore, relatively good beneficiation indexes are obtained.
Description
Technical field
The invention belongs to technical field of mineral processing is and in particular to a kind of ilmenite beneficiation method and equipment, it is applied to
Low-grade ilmenite comprehensive utilization of resources.
Background technology
The height direct relation of Iron Concentrate Quality the cost of blast furnace process, and domestic and international ore dressing circle is made improving concentrate grade
Emphasis for scientific research.Most of ores need ore grinding and selected process, and granule iron concentrate is referred to as the leading product of iron ore industry
Product；It produces mainly based on wet separation at present.The drawbacks of wet dressing, is, needs great lot of water resources in production process, and arranges
The serious pollution environment of the waste water that goes out；Mine tailing is deposited throwing huge fund of still needing and is built Tailings Dam, and the presence of Tailings Dam causes to dive to locality
Security risk.Additionally, " reverse flotation " technique is on the basis of fine grinding, reverse flotation work is increased to magnetic concentrate, reject
Lean intergrowth in concentrate." reverse flotation ", although effective, complex process, production cost is too high；Magnetic agglomeration gravity separator can only take off
Go out fine fraction intergrowth and gangue it is impossible to will deviate from compared with coarse fraction impurity, and water consumption is big, operation easier is big.This technique is not only
Complex process, requires standard higher granularity and slurry temperature, need to build reverse flotation factory building, and iron mineral granularity be had tighter
The requirement of lattice, increased medicament, power etc. and consumes, improve ratio of concentration, reduce production efficiency, increased metal loss, lead
Production cost is caused to raise, and because being likely to result in the impact of environment using medicament.
In the prior art, common preparation equipment applies in general to the sorting of magnetic iron ore, and most of special equipments are respectively
It is directed to the characteristic of ore and design.Such as No. 201010177556 applications of Chinese Patent No. disclose a kind of low-grade magnetite
Stone produces the beneficiation method of high-quality iron ore concentrate, and it includes following technique, step：Tail is thrown using stage grinding staged magnetic separation
Ore-dressing technique produces the magnetic concentrate of iron concentrate grade TFe62%-66%；Magnetic concentrate is floated using cation-collecting agent is counter
Select technique, obtain cation-collecting agent reverse flotation iron concentrate and chats；The chats that cation-collecting agent reverse flotation obtains is adopted
Anionic collector reverse floatation process, obtains anionic collector reverse flotation iron concentrate；Cation-collecting agent reverse flotation iron concentrate,
Anionic collector reverse flotation iron concentrate merges the final high-quality iron ore concentrate of acquisition.
Ilmenite is a kind of mineral containing iron and titanium elements simultaneously, the ilmenite in general nature circle by Armco magnetic iron,
Ferrotianium and non-magnetic gangue composition.Low-grade ilmenite refers to all not very high mineral of Armco magnetic iron therein, ferrotianium content,
8% about, content of titanium dioxide is even lower 4% about for the general magnetic iron content of such mineral, in some ore deposits also with
A small amount of v element.Such mineral deposits are bigger compared with the high-grade ferrotianium ore reserves of Panxi Diqu and are distributed wider, but because it
A kind of front never rational technique sorts to it, therefore could not be utilized on a large scale.
Content of the invention
In order to solve the above problems, being based upon solution low-grade ilmenite is that the single Armco magnetic iron that sorts cannot obtain economy
Benefit, and resource is caused with this problem of huge waste, the present inventor is through many secondary designs and research it is proposed that a kind of ferrotianium
Ore deposit beneficiation method and equipment, it is applied to low-grade ilmenite comprehensive utilization of resources.
According to a first aspect of the present invention, provide a kind of ilmenite beneficiation method, its ore dressing side with conventional ilmenite
Unlike method：This method is sufficiently to make use of the magnetic of useful component Armco magnetic iron and ferrotianium and useless gangue in ilmenite
The physical property matter such as property, this three physical difference of density, surface hydrophilicity and stage degree of dissociation material is sorted；Whole sorting
During employ magnetic-weight-floating joint process, the method first with magnetic separation have selected magnetic Armco magnetic iron the strongest, leads to again
The method crossing the gravity treatment strong magnetic joint flotation of joint selects ferrotianium therein.
Further, ore grinding and stage by stage beneficiation method stage by stage are employed in whole assorting room, in sorting ferrotianium
During employ secondary grinding so that the ferrotianium containing partial impurities is dissociated, further thus obtaining after one section strong magnetic
Preferably mineral processing index.
Closer, ilmenite beneficiation method specifically includes the following step：
1) ilmenite pulp is processed ore grinding stage by stage, passed through at the beginning of screw classifying equipment by broken and after a mill material
Step control ore grinding after size distribution so as in Armco magnetic iron reach part dissociation；
2) material after part dissociating carries out magnetic force by one section of weak magnetic to it and roughly selects, will be containing more ferromagnetic thing
Material sorts out one section of dusting cover of entrance, sends into gravitational separation equipment containing less ferromagnetic material and carries out gravity separation；
3) on the sieve of one section of dusting cover, coarse-grained material returns a mill and advances into ore grinding again, and the fine under sieve enters successively again
Enter two sections of weak magnetics and three sections of weak magnetics carry out ferromagnetic sort process, it is qualified just to have obtained after by the sorting of three sections of weak magnetics
Armco magnetic iron concentrate, during the mine tailing that two sections of weak magnetics and three sections of weak magnetics are selected enters, magnetomechanical carries out sorting of ferrotianium, thus completing
Ferromagnetic sort the stage；
4) thicker by the Relative Size of the material of gravitational separation equipment itself, can be close by wherein dissociation after gravity treatment
Most of the relatively light gangue of degree is separated and is thrown into mine tailing, and the relatively heavy ferrotianium of density is then through laggard every slag
Enter to one section strong magnetic；
5) gangue of the mineral and no magnetic that not will be completely dissociated the ferrotianium containing weak magnetic is separated by one section strong magnetic, and
The mineral that not will be completely dissociated the ferrotianium containing weak magnetic are sent into the ore grinding being made up of cyclone classification and two sections of dusting covers and two mills
In system, the gangue fraction separated then is thrown into mine tailing；
6) mineral of the ferrotianium containing weak magnetic that not will be completely dissociated are through by cyclone classification and two sections of dusting covers and two mills
After the grinding system of composition, granularity becomes thinner, and degree of dissociation now has been lifted, and most ferrotianium is all separated from gangue
Come, the mine tailing that this partial material is selected with two sections of weak magnetics before and three sections of weak magnetics is mixed and fed into middle magnetomechanical and carries out ferrotianium
Ferrotianium more relatively strong for wherein magnetic is sorted out by magnetic separating；
7) ferrotianium not being sorted out after magnetomechanical in entrance enters back into two sections strong magnetomechanical after being concentrated, and will wherein
Ferrotianium sort out as far as possible and send into flotation, the gangue fraction separated then directly is thrown into mine tailing；
8) ferrotianium containing part gangue sending into flotation makes ferrotianium and gangue be sufficiently separated after flotation, choosing
Do not go out qualified concentrated ilmenite, gangue fraction is directly thrown into mine tailing, complete whole assorting room.
According to a second aspect of the present invention, provide a kind of ilmenite preparation equipment using above-mentioned ilmenite beneficiation method,
It includes crude ore bin, disintegrating machine (disruption elements), vibratory sieve, one section of grinding machine, spiral classifier, ball mill, one section of cartridge type magnetic separation
Machine and spiral chute, one section of high-frequency screen.
Further, crude ore bin is the structure of similar funnel, and following funnel bottom is provided with belt feeder, with belt feeder
Operating the material of crude ore bin bottom can be taken away crude ore bin funnel bottom so that material in crude ore bin reduces, belt
Material is delivered in disintegrating machine machine, and the amount delivering into the material in disintegrating machine is determined by the running speed of belt feeder.Broken
Machine is jaw crusher or gyratory crusher, and the material of bulk is again sent back to broken by the material after crushing through vibratory sieve classification
Broken, the material reaching the fritter of requirement passes through belt feeder or chute one section of grinding machine of feeding, injects a certain amount of water in one section of grinding machine,
The material of these fritters can be milled to particulate the discharging opening inflow spiral classifier by grinding machine, spiral by the operating with grinding machine
The material of coarse grain is taken back the material inlet of ball mill by grader once again, and the material of particulate enters one section of drum magnetic separator to carry out selecting iron
Rougher process, the mine tailing part after low intensity magnetic separation, enter spiral chute carry out gravity treatment, the concentrate of low intensity magnetic separation is partially into one section high
After frequency sieves, coarse-grained material part returns one section of ball mill, and fine part carries out two sections of CTB drum magnetic separators and three sections of CTB cylinders
Formula magnetic separator is selecting iron.
Preferably, one section of drum magnetic separator is one section of CTB drum magnetic separator.
Closer, need first to carry out every Slag treatment before entering strong magnetic, the material after slag carries out one section of high intensity magnetic separation, one
Section high intensity magnetic separation is elected as and is roughly selected, and the concentrate roughly selected enters cyclone and is classified, and the fine of cyclone enters two sections of high-frequency screens,
On the sieve of two sections of high-frequency screens, the underflow (big particle size fractions) of part (big particle size fractions) and cyclone merges two sections of balls of entrance jointly
Mill carries out ore grinding.The coarse-grained material that cyclone and high-frequency screen are classified out fully enters two sections of ball millings, and after mill, material returns eddy flow
Carry out classification process again, until two sections of high frequency sieve screen apertures can be passed through before device.
Using ilmenite beneficiation method and the ilmenite preparation equipment of the present invention, magnetic can be obtained from direct raw ore
Iron, two kinds of value products of ferrotianium, make the mineral originally no sorting value become resource and also alleviate titanium resource shortage this
One problem.
Brief description
Fig. 1 is the concrete technology flow process schematic diagram of the ilmenite ore dressing according to the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of not making creative work all its
His embodiment, broadly falls into the scope of protection of the invention.Additionally, protection scope of the present invention only should not limited to following
Concrete structure or part or design parameter.
Ilmenite is made up of Armco magnetic iron, ferrotianium and gangue, because therefore there is difference with the presence of various ingredients in mineral
Degree of dissociation.Armco magnetic iron, ferrotianium and gangue differ primarily in that Armco magnetic iron has stronger magnetic, ferrotianium has relatively weak
Magnetic, gangue is non-magnetic；Armco magnetic iron and ferrotianium has relatively heavy density and the density of gangue is relatively low；Due to not
Surface crystallization form difference therefore surface hydrophilicity with mineral there is also difference.Due to useful component therein be Armco magnetic iron and
Ferrotianium, therefore we need all differences comprehensively utilizing them that they are sorted, and are also required to useful by two kinds
Composition is all elected and is used.
Ilmenite beneficiation method of the present invention and equipment, useful for not only sorting Armco magnetic iron therein but also sorting ferrotianium therein etc.
The ore-dressing technique method of component, it reasonably utilizes the thing of each component in mineral to comprehensively utilize as principle using stage grinding
Reason difference carries out magnetic-weight-floating combining and sorts, and extracts the useful constituents such as Armco magnetic iron therein, ferrotianium to greatest extent, effectively
Improve the rate of recovery of each useful constituent, so that former unworthy resource becomes the minable ore deposit having value
Produce resource.
The present invention program is summarised as：Using " corase grind-low intensity magnetic separation-gravity treatment-high intensity magnetic separation-fine grinding-strong magnetic selected-flotation "
Magnetic-weight-floating joint process, multi-step Armco magnetic iron therein and ferrotianium are sorted out stage by stage.Using the present invention's
Ilmenite beneficiation method, can obtain Armco magnetic iron, two kinds of value products of ferrotianium from direct raw ore, make originally no to sort valency
The mineral of value become resource and also alleviate titanium resource this problem of shortage.
The ilmenite preparation equipment of the present invention, it includes crude ore bin, disruption elements, classification assembly, grinding assembly, dusting cover group
Part, low intensity magnetic separation assembly, high intensity magnetic separation assembly and flotation assembly.Specifically, first it is stored to crude ore bin after material is exploited from mountain (big
Block material silo) in, the structure of the generally similar funnel of crude ore bin (feed bin), following funnel bottom typically can put a belt
Machine, the material of bin bottom can be taken away funnel bottom by the operating with belt feeder, so that the material in feed bin reduces, skin
Material is delivered in disintegrating machine band machine, and the amount delivering into the material in disintegrating machine is determined by the running speed of belt feeder.Broken
Broken machine typically adopts jaw crusher or gyratory crusher, and the material after crushing is classified by the material of bulk again through vibratory sieve
Send back to broken, the material reaching the fritter of requirement passes through belt feeder or chute one section of grinding machine of feeding, and in one section of grinding machine, injection is certain
The water of amount, the material of these fritters can be milled to particulate the discharging opening inflow screw classifying by grinding machine by the operating with grinding machine
Machine, the material of coarse grain is taken back the material inlet of ball mill by spiral classifier once again, and the material of particulate enters one section of drum magnetic separator
(present invention is using one section of CTB drum magnetic separator) carries out selecting the rougher process of iron, the mine tailing part after low intensity magnetic separation, enters spiral and slips
Groove carries out gravity treatment, and the part that the concentrate of low intensity magnetic separation is partially into one section of high-frequency screen coarse grain is possible to not will be completely dissociated (dissociation：Just
It is so that useful mineral is separated with gangue useless by means such as ore grindings, not will be completely dissociated is exactly also to there are many to be connected in one
Rise, also will regrind), return one section of ball mill, the part of particulate supposes to have dissociated to carry out two sections, three sections of CTB cylinders
Formula magnetic separator selecting iron, can by adjust the size of the screen cloth mesh of one section of high-frequency screen find make granularity that material dissociates and then
Guarantee the material after the material of high-frequency screen is dissociation, the material after dissociation passes through two sections of cartridge type magnetic separation, three sections of cartridge type magnetic
The magnetic material selected after choosing is exactly iron ore concentrate.
The mine tailing of one section of drum magnetic separator enter spiral chute carry out the direct jettisoning of mine tailing after gravity treatment just must not,
Because the feed of one section of drum magnetic separator is at the spiral classifier after one section of ball mill, raw meal particle size herein is typically thicker
(- 0.074mm material accounts for 40% about, and this number of the different material in different places might have change, but material herein is
Relatively thick), concentration criterion is carried out for thicker material and is relatively suitable for adopting gravity treatment, this stage is capable of the gangue of a jettisoning part
(because spiral chute price is relatively low, operating cost is relatively low, and the price of strong magnetomechanical and operating cost are all higher, so first using spiral shell
Rotation chute one roughing is carried out to material thus reduce follow-up equipment inlet amount reduce follow-up equipment essence amount or model and then
Reduce beneficiation cost) thus reducing the feeding coal of follow-up strong magnetic machine, because strong magnetomechanical has strict requirements to feeding granularity
(less than 1mm, otherwise can block up strong magnetomechanical), hence into needing before strong magnetic first to carry out every Slag treatment, the material after slag carries out one
Section high intensity magnetic separation, the wherein material containing ferrotianium is sorted out by magnetic field, and this section is elected as and roughly selected (because now raw meal particle size is relatively
Slightly do not reach dissociation), the mine tailing roughly selected directly drain must not, (ore particle that this section is elected is ferrotianium for the concentrate roughly selected
Ore deposit and carried the ilmenite of some gangues secretly) enter cyclone and be classified, the fine of cyclone enters two sections of high-frequency screens,
On the sieve of two sections of high-frequency screens, the underflow (big particle size fractions) of part (big particle size fractions) and cyclone merges two sections of balls of entrance jointly
Mill carries out ore grinding.Why first the selection of the screen cloth mesh of two sections of high-frequency screens is also to be determined according to the dissociation situation of material,
Cross after crossing cyclone high-frequency screen be because cyclone be probability hierarchical equipment that is to say, that in the stream of the top of cyclone (particulate portion
Point) also have the presence of coarse-grained material simply with respect to the material also having particulate in the less underflow simultaneously of material feeding, cyclone
For relative high frequency sieve, treating capacity is much greater and maintenance is little, but shortcoming is exactly to cannot function as strict grading to set
Standby, but this equipment and high-frequency screen are used in combination, the treating capacity of high-frequency screen can be greatly reduced thus the number of high-frequency screen needed for reducing
Amount can ensure that the granularity after the classification of material again.The coarse-grained material that cyclone and high-frequency screen are classified out fully enters two sections of balls
Mill, after mill, material carries out classification process, again until passing through two sections of high frequency sieve screen apertures before returning cyclone.High by two sections
Magnetomechanical (or CTB in entrance after the material of frequency sieve and two sections of drum magnetic separators before, the mine tailing mixing of three sections of drum magnetic separators
Drum magnetic separator, but his magnetic field intensity is more much higher than the magnetic field intensity of the drum magnetic separator selecting iron before, by this
The higher material of magnetic in stage material is elected.Enter and in the material of strong magnetomechanical, can not have excessive magnetic material, otherwise
The mineral processing index of strong magnetomechanical can be affected, the One function of this middle magnetomechanical just protects strong magnetomechanical；Other two, three sections of drum magnetic separators
It is used to select iron, and the magnetic of ilmenite is relatively low, two or three sections of drum magnetic separators can not be elected ilmenite, the magnetic of middle magnetomechanical
Although but field intensity does not have strong magnetomechanical field intensity high still can elect the preferable ilmenite of some magnetic in this section of material；
Third, the material after one section of high intensity magnetic separation enters two sections of ball millings carries out ore grinding again, this process can make some before and ferrotianium
The iron ore that ore deposit or gangue connect together dissociates out, can also be elected these materials by middle magnetomechanical), the mine tailing of middle magnetomechanical
Entering concentrator and being concentrated (can lead to ore pulp amount big that is to say, that water is too many because material concentration is too low, wet dressing is several
Each link is adding water, and therefore material can more select concentration lower, now if it is not carried out concentrating then can because of the water yield too
Need greatly to increase unit type or increase equipment number of units, thus lose more than gain, and concentrator operating cost is again very
Low, therefore increased concentration flow path in this link, and material concentration is concentrated to 25-30%, that is, strong magnetomechanical sorting index is preferable
Concentration).After concentration, material enters two sections strong magnetic and is sorted, and the concentrate selected enters floating after being mixed with middle magnetomechanical concentrate
Choosing, the mine tailing selected then directly is abandoned, and is selected ilmenite therein by the method for chemistry, mine tailing is abandoned after entering flotation.
It should be noted that contain magnetic iron ore and ilmenite in raw ore simultaneously, if being exactly first only right if a kind of mineral
A kind of waste of resource, therefore can select magnetic iron ore using the joint dressing method of this sample and can select ilmenite again.One section high
Frequency does not add cyclone before sieving and is because that in raw ore, amount containing magnetic iron ore is not a lot, and at therefore one section high-frequency screen, amount is not very
Greatly.Why it is not because that flotation is relatively costly using flotation at the very start, in the various dressing methods using before be all
In order to reduce the mine-supplying quantity of flotation, thus reducing operating cost.
The ilmenite beneficiation method of the present invention, it is abundant from this method unlike the beneficiation method of conventional ilmenite
The useful component Armco magnetic iron that make use of in ilmenite and the magnetic of ferrotianium and useless gangue, density, surface hydrophilicity this three
The item physical property matter such as physical difference and stage degree of dissociation material is sorted.Further, whole ilmenite ore dressing (sorted
Journey) in employ magnetic-weight-floating joint process, the method first with magnetic separation have selected magnetic therein Armco magnetic iron the strongest,
Method further through the gravity treatment strong magnetic joint flotation of joint selects ferrotianium therein.Additionally, whole ilmenite ore dressing (assorting room)
In employ ore grinding and stage by stage beneficiation method stage by stage, employ secondary grinding during sorting ferrotianium and make one section strong
After magnetic, the ferrotianium containing partial impurities is dissociated further, thus having obtained more preferable mineral processing index.
Specifically, the ilmenite beneficiation method of the present invention comprises the following steps：
1) ilmenite pulp is processed ore grinding stage by stage, passed through at the beginning of screw classifying equipment by broken and after a mill material
Step control ore grinding after size distribution so as in Armco magnetic iron reach part dissociation.
2) material after part dissociating carries out magnetic force by one section of weak magnetic to it and roughly selects, will be containing more ferromagnetic thing
Material sorts out one section of dusting cover of entrance, sends into gravitational separation equipment containing less ferromagnetic material and carries out gravity separation.
3) on the sieve of one section of dusting cover, coarse-grained material returns a mill and advances into ore grinding again, and the fine under sieve enters successively again
Enter two sections of weak magnetics and three sections of weak magnetics carry out ferromagnetic sort process, it is qualified just to have obtained after by the sorting of three sections of weak magnetics
Armco magnetic iron concentrate, during the mine tailing that two sections of weak magnetics and three sections of weak magnetics are selected enters, magnetomechanical carries out sorting of ferrotianium, thus completing
Ferromagnetic sort the stage.
4) thicker by the Relative Size of the material of gravitational separation equipment itself, can be close by wherein dissociation after gravity treatment
Most of the relatively light gangue of degree is separated and is thrown into mine tailing, and the relatively heavy ferrotianium of density is then through laggard every slag
Enter to one section strong magnetic.
5) gangue of the mineral and no magnetic that not will be completely dissociated the ferrotianium containing weak magnetic is separated by one section strong magnetic, and
The mineral that not will be completely dissociated the ferrotianium containing weak magnetic are sent into the ore grinding being made up of cyclone classification and two sections of dusting covers and two mills
In system, the gangue fraction separated then is thrown into mine tailing.
6) mineral of the ferrotianium containing weak magnetic that not will be completely dissociated are through by cyclone classification and two sections of dusting covers and two mills
After the grinding system of composition, granularity becomes thinner, and degree of dissociation now has been lifted, and most ferrotianium is all separated from gangue
Come, the mine tailing that this partial material is selected with two sections of weak magnetics before and three sections of weak magnetics is mixed and fed into middle magnetomechanical and carries out ferrotianium
Ferrotianium more relatively strong for wherein magnetic is sorted out by magnetic separating.
7) ferrotianium not being sorted out after magnetomechanical in entrance enters back into two sections strong magnetomechanical after being concentrated, and will wherein
Ferrotianium sort out as far as possible and send into flotation, the gangue fraction separated then directly is thrown into mine tailing.
8) ferrotianium containing part gangue sending into flotation makes ferrotianium and gangue be sufficiently separated after flotation, choosing
Do not go out qualified concentrated ilmenite, gangue fraction is directly thrown into mine tailing, complete whole assorting room.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Those skilled in the art is appreciated that without departing substantially from appended right
In the case of requiring the spirit and scope of the present invention of definition, various modifications can be made in form and details.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Those skilled in the art is appreciated that without departing substantially from appended right
In the case of requiring the spirit and scope of the present invention of definition, various modifications can be made in form and details.
Claims (4)
1. a kind of ilmenite beneficiation method, it is using the magnetic of the useful component Armco magnetic iron in ilmenite and ferrotianium and useless gangue
The physical property matter such as property, this three physical difference of density, surface hydrophilicity and stage degree of dissociation material is sorted；Whole sorting
During employ magnetic-weight-floating joint process, the method first with magnetic separation have selected magnetic Armco magnetic iron the strongest, leads to again
The method crossing the gravity treatment strong magnetic joint flotation of joint selects ferrotianium therein；Employ in whole assorting room stage by stage ore grinding and point
Stage beneficiation method, employs the ferrotianium containing partial impurities after secondary grinding makes one section strong magnetic during sorting ferrotianium
Dissociated further, thus having obtained more preferable mineral processing index；
It comprises the following steps：
1) ilmenite pulp is processed ore grinding stage by stage, tentatively controlled by screw classifying equipment by broken and after a mill material
Size distribution after ore grinding processed so as in Armco magnetic iron reach part dissociation；
2) material after part dissociating carries out magnetic force by one section of weak magnetic to it and roughly selects, and will divide containing more ferromagnetic material
Elect one section of dusting cover of entrance, send into gravitational separation equipment containing less ferromagnetic material and carry out gravity separation；
3) on the sieve of one section of dusting cover, coarse-grained material returns a mill and advances into ore grinding again, and the fine under sieve sequentially enters two again
Section weak magnetic and three sections of weak magnetics carry out ferromagnetic sort process, just obtained qualified magnetic after by the sorting of three sections of weak magnetics
Property iron ore concentrate, during the mine tailing that two sections of weak magnetics and three sections of weak magnetics are selected enters, magnetomechanical carries out sorting of ferrotianium, thus completing magnetic
Iron sort the stage；
4) Relative Size passing through the material of gravitational separation equipment itself is thicker, can be by the density phase of wherein dissociation after gravity treatment
Most of lighter gangue is separated and be thrown into mine tailing, the relatively heavy ferrotianium of density is then entering into after every slag
One section strong magnetic；
5) gangue of the mineral and no magnetic that not will be completely dissociated the ferrotianium containing weak magnetic is separated by one section strong magnetic, and will not
The grinding system that the mineral feeding of the ferrotianium containing weak magnetic that will be completely dissociated is made up of cyclone classification and two sections of dusting covers and two mills
Interior, the gangue fraction separated then is thrown into mine tailing；
6) mineral of the ferrotianium containing weak magnetic that not will be completely dissociated are through being made up of cyclone classification and two sections of dusting covers and two mills
Grinding system after granularity become thinner, degree of dissociation now has been lifted, and most ferrotianium is all come with gangue disengaging, this
The mine tailing that a part of material is selected with two sections of weak magnetics before and three sections of weak magnetics is mixed and fed into the magnetic force that middle magnetomechanical carries out ferrotianium
Ferrotianium more relatively strong for wherein magnetic is sorted out by sorting；
7) ferrotianium not being sorted out after magnetomechanical in entrance enters back into two sections strong magnetomechanical after being concentrated, and by titanium therein
Iron sorts out as far as possible and sends into flotation, and the gangue fraction separated then directly is thrown into mine tailing；
8) ferrotianium containing part gangue sending into flotation makes ferrotianium and gangue be sufficiently separated after flotation, sorts out
Qualified concentrated ilmenite, gangue fraction is directly thrown into mine tailing, completes whole assorting room.
2. a kind of ilmenite preparation equipment is it is characterised in that it includes crude ore bin, disintegrating machine, vibratory sieve, one section of ball mill, spiral shell
Rotation grader, one section of drum magnetic separator and spiral chute, one section of high-frequency screen；Crude ore bin is the structure of similar funnel, following leakage
Bucket bottom is provided with belt feeder, and the material of crude ore bin bottom can be taken away crude ore bin funnel bottom by the operating with belt feeder,
So that material in crude ore bin reduces, material is delivered in disintegrating machine belt feeder, delivers into material in disintegrating machine
Amount is determined by the running speed of belt feeder；
Material needs first to carry out every Slag treatment before entering strong magnetic, and the material after slag carries out one section of high intensity magnetic separation, one section of high intensity magnetic separation choosing
For roughly selecting, the concentrate roughly selected enters cyclone and is classified, and the fine of cyclone enters two sections of high-frequency screens, two sections of high-frequency screens
The upper part of sieve and the underflow of cyclone merge and jointly enter two sections of ball mills and carry out ore grinding；
Disintegrating machine is jaw crusher or gyratory crusher, and the material after crushing is classified by the material of bulk again through vibratory sieve
Send back to broken, the material reaching the fritter of requirement passes through belt feeder or chute one section of ball mill of feeding, injection in one section of ball mill
A certain amount of water, the material of these fritters can be milled to particulate going out by one section of ball mill by the operating with one section of ball mill
Material mouth flows into spiral classifier, and the material of coarse grain is taken back the material inlet of one section of ball mill, the thing of particulate by spiral classifier once again
Material enters one section of drum magnetic separator to carry out selecting the rougher process of iron, and the mine tailing part after low intensity magnetic separation enters spiral chute and carries out weight
Choosing, after the concentrate of low intensity magnetic separation is partially into one section of high-frequency screen, coarse-grained material part returns one section of ball mill, and fine part is entered
Two sections of CTB drum magnetic separators of row and three sections of CTB drum magnetic separators are selecting iron.
3. ilmenite preparation equipment according to claim 2 is it is characterised in that described one section of drum magnetic separator is one section
CTB drum magnetic separator.
4. ilmenite preparation equipment according to claim 2 it is characterised in that cyclone and high-frequency screen be classified out thick
Grain material fully enters two sections of ball mills, and after mill, material carries out classification process before returning cyclone again, until passing through two
Section high frequency sieve screen apertures.
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| US10722903B2 (en) | 2015-05-28 | 2020-07-28 | Bei Jing Ke Neng Mei Da Er Huan Bao Ke Ji Co., Ltd. | Tailings resource recovery process |
| CN104874462B (en) * | 2015-06-12 | 2017-11-03 | 鞍钢集团矿业有限公司 | The pre-selection of fine grain teeth cloth composite ore coarse grain, magnetic-floating sorting process |
| CN105195304A (en) * | 2015-07-24 | 2015-12-30 | 石家庄金垦科技有限公司 | Sorting process for improving quality and reducing impurities of low-grade magnetite concentrate |
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| CN106269177B (en) * | 2016-10-14 | 2018-04-24 | 鞍钢集团矿业有限公司 | Lean hematite thickness grading, gravity treatment-middle magnetic-strong magnetic-reverse floatation process |
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| CN110918250B (en) * | 2019-12-13 | 2021-09-21 | 会理县秀水河矿业有限公司 | Method for recovering titanium concentrate by using strong magnetic rough concentration and multi-section spiral chute gravity concentration |
| CN114054199A (en) * | 2021-11-15 | 2022-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing titanium middling by utilizing titanium-selecting tailings |
| CN114082524A (en) * | 2021-11-19 | 2022-02-25 | 攀钢集团矿业有限公司 | Method for producing vanadium-titanium-iron ore concentrate and ultrafine-grained-grade titanium ore concentrate |
| CN118060065B (en) * | 2024-04-25 | 2024-07-09 | 山东盛泰矿业科技有限公司 | Ilmenite flotation separation system and separation method |
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