CN109513522A - A kind of ore-dressing plant recycling iron from asbestos tailings - Google Patents
A kind of ore-dressing plant recycling iron from asbestos tailings Download PDFInfo
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- CN109513522A CN109513522A CN201910072219.5A CN201910072219A CN109513522A CN 109513522 A CN109513522 A CN 109513522A CN 201910072219 A CN201910072219 A CN 201910072219A CN 109513522 A CN109513522 A CN 109513522A
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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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- 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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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Abstract
The present invention discloses a kind of ore-dressing plant that iron is recycled from asbestos tailings, including alternation fluidised form machine, magnetic-gravity separation equipment, drum sieve, cylinder magnetic separator, spiral-flow type grader, ball mill and disc type rotary vacuum filter；The alternation fluidised form machine includes air-water mixing storehouse, and the mixing wastewater with air the top of the warehouse is provided with feed inlet, and the air-water mixing storehouse bottom is provided with bed sieve plate, offers air inlet and water inlet below the bed sieve plate；The air-water mixing storehouse side is provided with deslagging chamber, and the deslagging chamber oblique upper is hinged with gate；The deslagging chamber bottom is connected with the first closed discharger；The bed sieve plate bottom angled is provided with slag-guiding plate, and the bottom end of the slag-guiding plate is connected to the described first closed discharger.The ore-dressing plant provided by the invention that iron is recycled from asbestos tailings, beneficiating efficiency is high, cost and low energy consumption.
Description
Technical field
The present invention relates to ore-dressing plant technical fields, fill more particularly to a kind of ore dressing for recycling iron from asbestos tailings
It sets.
Background technique
Chrysotile is also referred to as chrysotile, is a kind of mineral in nonmetallic ore.Asbestos deposit is the mineral deposit of serpentine containing cotton,
Its average production-grade is between 3-6%, since grade is low, asbestos ore dressing can generate a large amount of serpentine tailings.Due to opening
It is long to adopt history, mine is numerous, and asbestos tailings storage is accumulated at 1,000,000,000 tons or more by China.Contain the iron oxide of 6-10% in serpentine
Mine, wherein 80% or more is magnetic mineral.Since asbestos tailings are crushed when selecting asbestos by multistage, granularity≤30mm, because
This, although the grade of iron is not high in asbestos tailings, selecting iron still has certain economic interests that can scheme, and removes in serpentine minerals in addition
Containing except magnetic iron ore, also containing there are many Non-ferrous minerals, such as nickel oxide, cobalt oxide.And these mineral are and magnet
Mine symbiosis, it selects and also just selects a variety of Non-ferrous minerals in serpentine together while iron, to realize asbestos tail
The recycling of multi-metallic minerals in mine.Thus, asbestos tailings select iron to have certain comprehensive benefit.
It is essentially all using common magnetic separation process that existing asbestos tailings, which select iron device, and basic procedure, which can be sketched, is
Broken, the classification of multistage grinding, multistage, multistage magnetic separation, dehydrating process.These techniques select iron operation adaptability to asbestos tailings
Difference, effect is undesirable, and most direct presentation is exactly that the rate of recovery of iron is low (only 50-60%), the low (52- of Iron concentrate grade
56%), beneficiating efficiency is not high, cost and energy consumption is high.
Summary of the invention
The object of the present invention is to provide a kind of from asbestos tailings recycles the ore-dressing plant of iron, to solve the above-mentioned prior art
There are the problem of, keep the rate of recovery of iron high, Iron concentrate grade is high, and beneficiating efficiency is high, cost and low energy consumption.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of ore-dressing plant that iron is recycled from asbestos tailings, including alternation fluidised form machine, magnetic-gravity separation are set
Standby, drum sieve, cylinder magnetic separator, spiral-flow type grader, ball mill and disc type rotary vacuum filter；The alternation fluidised form machine includes air water
Mixing bunker, the mixing wastewater with air the top of the warehouse are provided with feed inlet, and the air-water mixing storehouse bottom is provided with bed sieve plate, the bed
Air inlet and water inlet are offered below layer sieve plate；The air-water mixing storehouse side is provided with deslagging chamber, on the deslagging chamber is oblique
Side is hinged with gate；The deslagging chamber bottom is connected with the first closed discharger；The bed sieve plate bottom angled, which is provided with, to be led
Slag plate, the bottom end of the slag-guiding plate are connected to the described first closed discharger.
Optionally, the water inlet is connected with water inlet pipe, and water adjusting valve door is equipped on the water inlet pipe.
Optionally, the mixing wastewater with air the top of the warehouse is equipped with distributor shaft, is provided with compression in the distributor shaft
Air distributor, the compressed air distributor are connected separately with tracheae and inlet channel, the inlet channel and the air inlet
Mouth connection, the tracheae are connected to the air-water mixing storehouse.
Optionally, the alternation fluidised form machine includes the air-water mixing storehouse that three structures are identical and are set side by side.
Optionally, the magnetic-gravity separation equipment is magnetic weight sorting machine, and the magnetic weight sorting machine includes cylinder, on the cylinder
The row's of being connected separately with tail water hole and overflow launder on the side wall at end are provided with vertical feed sleeve and agitating shaft in the cylinder,
The agitating shaft top is set at the top of the cylinder by stirring bearing block；Multiple stirrings are symmetrically installed on the agitating shaft
Scraper plate, the cylinder body bottom are provided with disk, tapered portion, the tapered portion and the cylinder body bottom are provided with below the disk
It is tightly connected, water supply pipe dish is installed above the tapered portion, the tapered portion bottom is equipped with the second closed discharger.
Optionally, the disk is internal equipped with permanent magnet, and outside is coated with the disklike body knot of magnetic and wear-resistant material
Structure, the diameter of the disk are less than the inner diameter of steel flue of cylinder；The permanent magnet radially presses the magnetic of S-N-S-N in the disk
Pole arrangement.
Optionally, it is symmetrically installed on the agitating shaft there are four the stirring scratch board, four stirring scratch boards are respectively
Involute structure.
The present invention also provides a kind of ore-dressing techniques using above equipment, mainly include step 1；Pretreatment, asbestos tailings
It is crushed after tentatively sieving, is sieved again after broken, material of the granularity lower than 10mm adds water to enter after regrading
Junior's processing unit, the material return greater than 10mm continue to be crushed；
Step 2；Primary grinding；Using double spiral shells of 1.2 × 12m of lattice-type ball mill and model Φ of 2.2 × 4.5m of Φ
Grader is revolved, the classifying mineral slurry concentration for controlling material is 20-25%, and the pulp density of ball milling ore grinding is between 75-85%；
Step 3；One stages of magnetic separation；The lower one stream of iron-bearing mineral and feeding using cylinder permanent-magnet magnetic separator, in absorbing material
Journey；The material not being drawn is discharged into tailing pit as tailing；
Step 4；Cyclone classification；Iron-bearing mineral is classified using polyurethane cyclone, is greater than 250-325 mesh partial size
Material enter secondary grinding after eddy flow is concentrated, the material less than 250-325 mesh partial size is directly entered two stages of magnetic separation；
Step 5: repeating Step 2: three and four, until by iron-bearing mineral after three stages of magnetic separation, then through disc type vacuum mistake
Filter dehydration, obtains Iron concentrate product.
It optionally, further include magnetic weight sorting step between magnetic separation and cyclone classification；Magnetic is sorted again using magnetic weight sorting machine, institute
State magnetic weight sorting machine diameter 3.5m, high 3.0m, the magnetic field strength 1300MT of bottom formula disk, mixing speed 20r/min.
Optionally, in step 1, the material after regrading further includes except asbestos step, which uses an alternating flow
State machine；In step 2 and step 5, the material after primary grinding and secondary grinding equally uses alternation fluidised form machine to carry out material
Except asbestos operate；Material after three sections of ore grindings is carried out finally using drum sieve except asbestos operate.
Optionally, it is provided with a drum sieve on the tail water flow path of the alternation fluidised form machine after secondary grinding, for catching
Receive asbestos, return iron content ore pulp.
It optionally, further include asbestos recycling step, the asbestos for that will be removed after alternation fluidised form machine and cylinder screening
Recycling；Including using 4 drum sieves arranged side by side to carry out one section of screening purification of fountain first；Secondly using two drum sieves arranged side by side into
The two sections of screening purifications of row fountain, are carried out Swirling flow sand-removing using one 4 groups of cyclone group later, are finally filtered using filled type
Machine is dehydrated.
The present invention achieves following technical effect compared with the existing technology:
The present invention, which generates material under the action of the intracorporal solid-liquid two-phase flow of machine is in pulse compressed air, has impact force
Undulation, can make inclusion enclave or aggregate repeatedly air pressure impact, material collision and up and down break in the movement rolled
Solution, while stone, iron content particle and fiber disposably separate in body, asbestos separative efficiency is up to 98%, thus effectively
During solving asbestos tailings iron selection technique, asbestos wool and in piecewise ore grinding continuous cleavage asbestos beam blending contain iron ore
In object, to a series of adverse effects of magnetic separation and grinding operation generation.
It while selecting iron, has recycled asbestos and its quality is made to reach product standard, to realize asbestos in dresser
Separation, purification, utilization in skill, ore dressing Economic model are more preferable.
The middle magnetic of ore pulp swirling motion (preferably with stirring, can be made using the middle magnetic coagulation equipment that the present invention uses
Agglomeration devices), nonferrous clay minerals particle during selecting iron can be efficiently separated, also energy collecting simultaneously is by clay class
Mineral wrap up and are not separated the part magnetism iron-bearing mineral particle come in magnetic separator magnetic separation.
The grade for the Iron concentrate selected can be made to reach 62% using the present invention, the rate of recovery of iron reaches 75%.Asbestos return
Yield reaches 98%, and the quality of asbestos product meets and exceeds the requirement of national standard GB/T8071-2008, and overall economic efficiency is aobvious
It writes.
Without toxic, harmful or heavy metal object generation, without secondary pollution in ore dressing process.Water in technical process is circulation
It utilizes, due to using the segmentation dewatering process between each process, the utilization rate of centralized recovery, water is higher.This technique is wet process
Operation does not generate dust pollution, and it is purifying to realize production process.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the alternation fluidised form machine structural schematic diagram that the ore-dressing plant of iron is recycled from asbestos tailings；
Fig. 2 is the alternation fluidised form side view that the ore-dressing plant of iron is recycled from asbestos tailings；
Fig. 3 is the magnetic weight separator structure schematic diagram that the ore-dressing plant of iron is recycled from asbestos tailings；
Fig. 4 is the magnetic weight sorting machine top view that the ore-dressing plant of iron is recycled from asbestos tailings；
In figure, 1 it is feed inlet, 2 is air inlet, 3 is water inlet, 4 is bed sieve plate, 5 is gate, 6 is deslagging chamber, 7 is
First closed discharger, 8 be slag-guiding plate, 9 be compressed air distributor, 10 be air-water mixing storehouse, 11 be water adjusting valve door, 12 be
Tracheae, 13 be distributor shaft, 14 be row tail water hole, 15 be stirring bearing block, 16 be overflow launder, 17 be agitating shaft, 18 for into
Material casing, 19 be stirring scratch board, 20 be disk, 21 be the second closed discharger, 22 be to water coil.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of from asbestos tailings recycles the ore-dressing plant of iron, to solve the above-mentioned prior art
There are the problem of, keep the rate of recovery of iron high, Iron concentrate grade is high, and beneficiating efficiency is high, cost and low energy consumption.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The present invention provides a kind of ore-dressing plant that iron is recycled from asbestos tailings, in every section of process for selecting iron while using
Alternation classification, magnetic gravity treatment, magnetic separation process, i.e. alternation fluidization-magnetic separation-magnetic gravity treatment-classification-ore grinding composition three-stage
Beneficiation flowsheet.It is characterized in that ore dressing process does not have to any medicament, to water without particular/special requirement, do not need to carry out pH value yet yet
Adjustment.Its feature also reside in separated in time remaining asbestos in asbestos tailings and after piecewise ore grinding continuous cleavage asbestos
Beam eliminates asbestos in ore pulp to the adverse effect for selecting iron.And this technology is the alternation fluidised form machine using independent development.
For solving the clay minerals in ore pulp to selecting the adverse effect of Iron grade then to use independent development magnetic-gravity separation equipment.With
Cylinder magnetic separator is used in solving the selected equipment of iron powder.Equipment for ore pulp classification, concentration is classified using spiral-flow type
Machine.Grinding attachment uses ball mill.Dehydration equipment uses disc type rotary vacuum filter.
The characteristics of this process flow, also resides in, and has carried out dedusting and desanding to each asbestos for selecting iron job step to separate
Wet process sorts, so that asbestos be made to be purified, has reached the standard of asbestos product, has obtained asbestos product, achieves comprehensive benefit
With the purpose of tailing, economic benefit is more excellent than single selection Iron concentrate.Asbestos purification process use two sections of screening dedustings, one section
Swirling flow sand-removing, dewatering process.Screening purification operation uses fountain drum sieve, and desanding operation uses multiple groups cyclone, and dehydration is adopted
With fill-type flame filter press.
Specifically, as depicted in figs. 1 and 2, including alternation fluidised form machine, magnetic-gravity separation equipment, drum sieve, drum-type magnetic separation
Machine, spiral-flow type grader, ball mill and disc type rotary vacuum filter；Alternation fluidised form machine includes air-water mixing storehouse 10, and air-water mixing storehouse 10 pushes up
Portion is provided with feed inlet 1, and 10 bottom of air-water mixing storehouse is provided with bed sieve plate 4, and 2 He of air inlet is offered below bed sieve plate 4
Water inlet 3；10 side of air-water mixing storehouse is provided with deslagging chamber 6, and 6 oblique upper of deslagging chamber is hinged with gate 5；6 bottom of deslagging chamber connects
It is connected to the first closed discharger 7；4 bottom angled of bed sieve plate is provided with slag-guiding plate 8, and the bottom end of slag-guiding plate 8 closed is unloaded with first
Glassware 7 is connected to.Water inlet 3 is connected with water inlet pipe, and water adjusting valve door 11 is equipped on water inlet pipe.It is installed at the top of air-water mixing storehouse 10
There is distributor shaft 13, compressed air distributor 9 is provided in distributor shaft 13, compressed air distributor 9 is connected separately with
Tracheae 12 and inlet channel, inlet channel are connect with air inlet 2, and tracheae 12 is connected to air-water mixing storehouse 10.Alternation fluidised form machine packet
Include the air-water mixing storehouse 10 that three structures are identical and are set side by side.
In order to make full use of the large specific surface area of asbestos fibre, and " fair current " effect (movement resistance of the fiber in flow field
Power is small), while the specific gravity after the cavity structure water suction because of asbestos fibre being overcome to increase again, a system caused by sinking speed quickening
Column influence the unfavorable factor of gravity treatment, and invention applies two-dimensional flow field fluctuation effects, i.e. fluctuation two phase flow.In this flow field, object
Material enters from one end feed inlet 1 of alternation fluidised form machine, and water enters from body lower water inlet 3.
Gravity treatment theory thinks: in vertical alternation medium flow field, the solid material in ore pulp can be layered again, in ore pulp shape
Under conditions of being fluctuated at pulsation (under the action of artificial mechanism power) and with sine wave, density big mineral grain (such as iron content snake
Stone particle) sinking speed in water flow is fast, and the lower part in water flow layer, vice versa.Due to density contrast, the small material of density
(such as asbestos wool and tiny nonferrous clay pit) is difficult material bed (such as large granular materials and iron content particle) big through density
Into lower space, therefore, material is divided to two layers, and iron-containing heavy mineral enters the concentrate store of equipment lower part, stone through " bed course "
The light minerals such as cotton are discharged from top overflow port.The ferrous material of concentrate store, by the elevator " taking-up " and the next work of entrance of equipment
Industry link.Continuous feed-pulsation-layering-sorting-discharge, to complete the separation of asbestos and iron-bearing mineral.In order to increase
" buoyancy " of ore dressing medium, in alternation fluidised form machine to liquid by the compressed air distributor 9 in channel by air inlet 2 and tracheae
12 impose the compressed air disturbance of frequency, so that the solid-liquid two-phase flow of script smooth flow in body be made to generate dipping and heaving
Sinusoidal undulation.
Enter for disturbing water body and generating the compressed air of wave from body top compression air distributor 9, compression is empty
Gas distributor 9, circles, and the 1/8-1/4 period is that air water is connected, and compressed air passes through air inlet 2 and tracheae 12 at this time
Transfer the pressure to water body, the water surface of body rises when gas communication, and other than this period, compressed air be it is isolated,
For water in body when no compressed air applies pressure, the water surface is restored to original height again, and so on, forms wave.Pressure
Contracting air takes and rotates in 13 division scale of distributor shaft and rotor of compressed air distributor 9 absolutely to the pressure frequency of water body
Rate.
Material into alternation fluidised form machine receives the effect of four kinds of power.First is that the ascending water entered from air-water mixing storehouse 10
The effect of stream；Second is that the fluctuation thrust of water flow caused by the compressed air entered as air inlet 2 and tracheae 12；Third is that fluctuating flow
The power that B brings out the bottom horizontal flow sheet of mouth is flowed to from the end A；Fourth is that gravity.In this way, into body material these four power common work
Under, the buoyancy of ore pulp is on the one hand increased, another aspect ore pulp is periodically moved in a manner of a kind of jump state, increases fibre
The gravity separation distance of peacekeeping particle and time.The more importantly pulse that compressed air imposes ore pulp, to complicated in material
The decomposition of structure provides external force.Material enters after alternation fluidised form machine, asbestos fibre (containing dust particles) and iron content in material
The motion profile of material (stone containing size block) is just changed.Firstly, the water flow of alternation fluidised form machine is designed to so multiple
The purpose of miscellaneous movement is to make the rising buoyancy of water closer to the subsidence velocity of the self weight of asbestos fibre, and be less than iron-bearing mineral
The sinking speed of grain.In this way, ore pulp enters after body mixes with water, iron-bearing mineral particle (containing stone) is moved downward, and
Fiber (containing dust) is that wave moves horizontally forward.By the inclusion enclave of asbestos fibre and agglomerate in compressed air week in material
Under the pulse and vibration synthesis of phase property, it is subjected to the decomposition of crushing effect.Alternation fluidised form machine is empty in water inlet pipe and compression
The top of gas air inlet pipe is provided with the steel plate layer of one layer of perforation, i.e. bed sieve plate 4, and effect is the water flow uniformly risen and calms the anger
The caused water surface rises and falls, and the granularity of deslagging is isolated.Alternation fluidised form machine is divided into 3 warehouses, in the rear end of each warehouse (from feed end
See) one deslagging chamber 6 of setting；It acts on the block stone for being greater than 4 hole of bed sieve plate as the bounce of bed surface water flow passes through row's stone
Gate 5 enter deslagging chamber 6, in the lower part of deslagging chamber, be equipped with the first closed discharger 7, it is continuous rotation, intermittent row
Material.The benefit that big stone is not directed through the sinking of bed sieve plate 4 is avoided to ascending current and compressed air heaving of the sea
Uniformity influence, keep the mass motion of water body more stable, uniform, gravity treatment layering is more preferable.And it is less than containing for 4 aperture of bed sieve plate
Iron ore composition granule can then sink directly through bed sieve plate 4 and through slag-guiding plate 8, and finally with the stone in deslagging chamber 6 by
The closed discharger 7 of the first of bed body lower part is discharged, into the next operation for selecting iron.In alternation fluidised form body, after sorted
The mixture of asbestos fibre, dust and water goes out body from the end the B overflow on bed body top.
It is produced through the mixing that the product of alternation fluidised form machine gravity treatment upper back overflow is the asbestos and dust after have passed through except iron sand
Object is also needed by cleaning dust and desanding operation, and this technical process has consideration in the art.Through flowing alternation state machine weight
The product of overflow is the water slurry mixture containing asbestos and dust after choosing, and pulp density is between 5-20%.Due to asbestos dust
Be by the fine particles such as the fine powder of serpentine, ground mulching loess, talcum, montmorillonite mixing constitute, these mineral with
After water is mixed into ore pulp, there is very big viscosity.Fiber is shown in screening operation and dust is not readily separated, " paste sieves ", " glues
The phenomenon that net ".So preferred rotary spraying type drum sieve.
Pulp density into screening operation should control between 5-20%, and sorted materials are sufficiently mixed with water, mine
Slurry is uniform.
The equipment that asbestos and dust carry out screening purification and graded operation is used rotary spraying type drum sieve.
For sloughing clay minerals (also have and be used to collecting weak magnetic mineral after magnetic separation, improve the effect of the rate of recovery of iron)
Magnetic gravity concentrator, using have stirring action middle magnetic coagulation equipment, such as middle magnetic coagulation column magnetic separator, middle magnetic coagulation device etc..
Pulp density into magnetic heavy-duty machine is 10-30%.
Equipment for ore grinding is ball mill, overflow type or grid-like to be ok.Two sections and three sections of classifying equipoment
For common cyclone group, the cyclone diameter before secondary grinding is Φ 200-350mm, and the cyclone diameter before three sections of ore grindings is
Φ150-250mm.And the classifying equipoment after one section of ball milling uses spiral classifier.
In every section of process for selecting iron while using alternation classification, magnetic gravity treatment, magnetic separation process, i.e. alternation fluidization-magnetic
Choosing-magnetic gravity treatment-classification-ore grinding composition three-stage beneficiation flowsheet.It is characterized in that ore dressing process does not have to any medicament, it is right
Water does not need to be adjusted pH value without particular/special requirement yet yet.Its feature is also resided in have separated in asbestos tailings in time and be remained
Asbestos and after piecewise ore grinding continuous cleavage asbestos beam, eliminate asbestos in ore pulp to the adverse effect for selecting iron.And this
One technology is the alternation fluidised form machine using independent development.For solving the clay minerals in ore pulp to selecting the unfavorable of Iron grade
It influences then to use magnetic-gravity separation equipment.For solving the selected equipment of iron powder using cylinder magnetic separator.Be classified for ore pulp,
The equipment of concentration uses spiral-flow type grader.Grinding attachment uses ball mill.Dehydration equipment uses disc type rotary vacuum filter.
In the mixing for through the product of alternation fluidised form machine gravity treatment upper back overflow being asbestos and dust after have passed through except iron sand
Product is also needed by cleaning dust and desanding operation, and this technical process has consideration in the art.Through flowing alternation state machine
The product of overflow is the water slurry mixture containing asbestos and dust after gravity treatment, and pulp density is between 5-20%.Due to flake asbestos
Dirt is made of the mixing of the fine particles such as the fine powder of serpentine, ground mulching loess, talcum, montmorillonite, these mineral
After being mixed into ore pulp with water, there is very big viscosity.Show fiber in screening operation and dust be not readily separated, " paste sieves ",
The phenomenon that " sticky net ".So preferred rotary spraying type drum sieve.
Pulp density into screening operation should control between 5-20%, and sorted materials are sufficiently mixed with water, mine
Slurry is uniform.The equipment that asbestos and dust carry out screening purification and graded operation is used rotary spraying type drum sieve.For taking off
The magnetic gravity concentrator for going clay minerals (also have and be used to collecting weak magnetic mineral after magnetic separation, improve the effect of the rate of recovery of iron), is adopted
It is the middle magnetic coagulation equipment with stirring action, such as middle magnetic coagulation column magnetic separator, middle magnetic coagulation device etc..Into the mine of magnetic heavy-duty machine
Slurry concentration is 10-30%.Equipment for ore grinding is ball mill, overflow type or grid-like to be ok.Two sections and three sections
Classifying equipoment is common cyclone group, and the cyclone diameter before secondary grinding is Φ 200-350mm, the eddy flow before three sections of ore grindings
Device diameter is Φ 150-250mm.And the classifying equipoment after one section of ball milling uses spiral classifier.
Magnetic-gravity separation equipment of the invention be magnetic weight sorting machine, as shown in Figure 3 and Figure 4, magnetic weight separator structure include into
Expect casing 18, ore pulp enters the bottom of cylinder by feed sleeve 18, and under gravity, and solid mineral grain is to casing
The 20 surrounding cross flow of disk of lower part.Disk 20 is internal equipped with permanent magnet, the disk that outside is with saturating magnetic and wear-resisting material is coated
Shape body, diameter are less than the inner diameter of steel flue of cylinder.Magnet Boulez in disk 20 is to sort in radial direction by the magnetic pole of S-N-S-N,
So also forming the polarity of the magnetic field for prolonging radial S-N-S-N in the upper surface of disk 20.The top of disk 20 is stirring scratch board 19,
It is made of the scraper plate of four involutes, and the position that the lower part of stirring scratch board 19 is contacted with disk 20 is rubber slab, is avoided
Scraper plate is contacted in rotation with disk 20 firmly.Stirring scratch board 19 is connect with agitating shaft 17, and agitating shaft 17 is fixed on cylinder top
It stirs on bearing block 15, and is driven by driving equipment.By adjusting the slewing rate of agitating shaft 17, also just pass through stirring scratch board 19
The revolving speed of flow of slurry in cylinder is had adjusted, and then affects the tangential velocity and buoyancy of ore pulp chats composition granule.The top of cylinder
There are overflow launder 16 and row tail water hole 14, the tail water (containing tailing) come is overflowed from cylinder top to be discharged by row tail water hole 14.
Cylinder conical section in 20 lower part of disk is laid with to water coil 22, is adjusted by adjusting the size to 22 water supply of water coil
The size of ascending current in cylinder is saved, and then also just has adjusted the size of the buoyancy of water.The bottom of cylinder cone portion is equipped with
Second closed discharger 21, for arranging the mineral grain (iron-bearing mineral particle) of the weight fallen from 20 edge of disk, but also not
Water can be allowed freely to leak.
When work, ore pulp enters the cylinder for filling the magnetic heavy-duty machine of water, under the action of self-weight, mineral from feed sleeve 18
Grain is flowed on disk 20 by the bottom of feed sleeve 18, and due to the magnetic attraction of disk 20, mineral grain containing magnet is attracted on
On disk 20, and the mineral grain without magnet is then gradually to the periphery diffusion of disk 20.Heap at disk 20 and feed sleeve 18
Long-pending material is under the drive of rotating stirring scratch board 19, in time to the periphery movement of disk 20.Stirring scratch board 19 is
It is driven by the agitating shaft 17 being fixed on stirring bearing block 15, the top of agitating shaft 17 is equipped with driving device.On disk 20
Material can occur under the collective effect of 20 magnetic attraction of disk, the rotation of stirring scratch board 19 and rotary water current (caused by scraper rotary turns)
Following movement；One is designed to the rotation of the stirring scratch board 19 of involute, can force mineral grain rapidly to disk 20
Periphery movement (effect of centrifugal force).Two, which are designed to the polar disk 20 of S-N-S-N, can make the mineral grain in movement in magnetic
It under the collective effect that the pressure of suction change in polarity, stirring scratch board 19 drives, constantly overturns, opens aggregate and inclusion enclave,
And it is moved with the track of involute to 20 periphery of disk.Third is that the ascending current driven by stirring scratch board 19 can be on disk 20
Light mineral particle (without the magnet) eddy flow constantly separated due to overturning is moved upwards, is sorted again to implement magnetic-.Together
When, the mineral grain constantly moved to cylinder periphery when reaching 20 edge of disk, by cylinder lower part to water coil 22
The control of confluent falls heavy suite (mineral containing magnet), and into conical section, and second by cylinder lowest part is close
Close the discharge of discharger 21.And the light mineral particle (be free of or seldom the mineral containing magnet) at 20 edge of disk is reached, in disk 20
It is upward under drive with ascending current continuous around cylinder, and spin ascending motion with water flow, to implement two to material
Secondary gravity treatment.Light mineral particle overflows in overflow launder 16 with spiralling water flow from cylinder topmost, and by row's tail water hole 14
Discharge.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (7)
1. a kind of ore-dressing plant for recycling iron from asbestos tailings, it is characterised in that: set including alternation fluidised form machine, magnetic-gravity separation
Standby, drum sieve, cylinder magnetic separator, spiral-flow type grader, ball mill and disc type rotary vacuum filter；The alternation fluidised form machine includes air water
Mixing bunker, the mixing wastewater with air the top of the warehouse are provided with feed inlet, and the air-water mixing storehouse bottom is provided with bed sieve plate, the bed
Air inlet and water inlet are offered below layer sieve plate；The air-water mixing storehouse side is provided with deslagging chamber, on the deslagging chamber is oblique
Side is hinged with gate；The deslagging chamber bottom is connected with the first closed discharger；The bed sieve plate bottom angled, which is provided with, to be led
Slag plate, the bottom end of the slag-guiding plate are connected to the described first closed discharger.
2. the ore-dressing plant according to claim 1 for recycling iron from asbestos tailings, it is characterised in that: the water inlet connects
It is connected to water inlet pipe, water adjusting valve door is installed on the water inlet pipe.
3. the ore-dressing plant according to claim 2 for recycling iron from asbestos tailings, it is characterised in that: the mixing wastewater with air
The top of the warehouse is equipped with distributor shaft, and compressed air distributor, the compressed air distribution are provided in the distributor shaft
Device is connected separately with tracheae and inlet channel, and the inlet channel is connect with the air inlet, and the tracheae and the air water are mixed
Close storehouse connection.
4. the ore-dressing plant according to claim 3 for recycling iron from asbestos tailings, it is characterised in that: the alternation fluidised form
Machine includes the air-water mixing storehouse that three structures are identical and are set side by side.
5. the ore-dressing plant according to claim 3 for recycling iron from asbestos tailings, it is characterised in that: the magnetic-gravity separation
Equipment is magnetic weight sorting machine, and the magnetic weight sorting machine includes cylinder, the row's of being connected separately with tail water on the side wall of the cylinder upper end
Hole and overflow launder, vertical feed sleeve and agitating shaft are provided in the cylinder, and the agitating shaft top passes through stirring bearing
Seat is set at the top of the cylinder；Multiple stirring scratch boards are symmetrically installed on the agitating shaft, the cylinder body bottom is provided with magnetic
Disk, the disk lower section are provided with tapered portion, and the tapered portion and the cylinder body bottom are tightly connected, peace above the tapered portion
Equipped with water supply pipe dish, the tapered portion bottom is equipped with the second closed discharger.
6. the ore-dressing plant according to claim 5 for recycling iron from asbestos tailings, it is characterised in that: the disk is interior
Portion is equipped with permanent magnet, and outside is coated with the disklike body structure of magnetic and wear-resistant material, and the diameter of the disk is less than cylinder
Inner diameter of steel flue；The permanent magnet radially presses the pole arrangement of S-N-S-N in the disk.
7. the ore-dressing plant according to claim 5 for recycling iron from asbestos tailings, it is characterised in that: on the agitating shaft
The stirring scratch board there are four being symmetrically installed, four stirring scratch boards are respectively involute structure.
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| CN201910072219.5A CN109513522B (en) | 2019-01-25 | 2019-01-25 | Ore dressing device for recovering iron from asbestos tailings |
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| CN201910072219.5A CN109513522B (en) | 2019-01-25 | 2019-01-25 | Ore dressing device for recovering iron from asbestos tailings |
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| CN109513522B CN109513522B (en) | 2021-04-16 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493108A (en) * | 1967-05-10 | 1970-02-03 | American Smelting Refining | Concentration of asbestos ore |
| US5720393A (en) * | 1996-03-25 | 1998-02-24 | Board Of Trustees Operating Michigan State University | Method and apparatus for the separation of manure and sand |
| US6425485B1 (en) * | 1998-03-26 | 2002-07-30 | Eriez Magnetics | Air-assisted density separator device and method |
| CN101792184A (en) * | 2010-01-21 | 2010-08-04 | 新疆蓝天伟业科技开发有限公司 | Method for comprehensively utilizing asbestos tailings |
| CN201930844U (en) * | 2010-12-23 | 2011-08-17 | 洛阳昶威机械制造安装有限公司 | Fluidized teetered bed separator |
| CN102921534A (en) * | 2012-11-07 | 2013-02-13 | 牛庆君 | Method for recycling iron from serpentine asbestos rock type asbestos tailings |
| CN103196281A (en) * | 2013-04-02 | 2013-07-10 | 中国矿业大学 | Drying and separation integrated machine for vibrated fluidized bed |
| CN104001620A (en) * | 2014-05-21 | 2014-08-27 | 陕西大山机械有限公司 | Magnetite concentrate grade improving machine |
| CN105728176A (en) * | 2016-02-26 | 2016-07-06 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for reducing content of SiO2 in magnetite concentrate |
| CN206527044U (en) * | 2017-02-07 | 2017-09-29 | 连云港金瑞照明电器有限公司 | A kind of quartz sand sorter |
-
2019
- 2019-01-25 CN CN201910072219.5A patent/CN109513522B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493108A (en) * | 1967-05-10 | 1970-02-03 | American Smelting Refining | Concentration of asbestos ore |
| US5720393A (en) * | 1996-03-25 | 1998-02-24 | Board Of Trustees Operating Michigan State University | Method and apparatus for the separation of manure and sand |
| US6425485B1 (en) * | 1998-03-26 | 2002-07-30 | Eriez Magnetics | Air-assisted density separator device and method |
| CN101792184A (en) * | 2010-01-21 | 2010-08-04 | 新疆蓝天伟业科技开发有限公司 | Method for comprehensively utilizing asbestos tailings |
| CN201930844U (en) * | 2010-12-23 | 2011-08-17 | 洛阳昶威机械制造安装有限公司 | Fluidized teetered bed separator |
| CN102921534A (en) * | 2012-11-07 | 2013-02-13 | 牛庆君 | Method for recycling iron from serpentine asbestos rock type asbestos tailings |
| CN103196281A (en) * | 2013-04-02 | 2013-07-10 | 中国矿业大学 | Drying and separation integrated machine for vibrated fluidized bed |
| CN104001620A (en) * | 2014-05-21 | 2014-08-27 | 陕西大山机械有限公司 | Magnetite concentrate grade improving machine |
| CN105728176A (en) * | 2016-02-26 | 2016-07-06 | 中钢集团马鞍山矿山研究院有限公司 | Beneficiation method for reducing content of SiO2 in magnetite concentrate |
| CN206527044U (en) * | 2017-02-07 | 2017-09-29 | 连云港金瑞照明电器有限公司 | A kind of quartz sand sorter |
Non-Patent Citations (1)
| Title |
|---|
| 崔长征: "从石棉尾矿中回收磁铁矿新工艺", 《现代矿业》 * |
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| CN109513522B (en) | 2021-04-16 |
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