CN214347167U - Scheelite heavy medium tailing discarding and flotation combined separation system - Google Patents
Scheelite heavy medium tailing discarding and flotation combined separation system Download PDFInfo
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Abstract
The invention relates to the technical field of scheelite beneficiation, in particular to a scheelite dense medium tailing throwing and flotation combined separation system which is characterized by comprising a dense medium waste throwing system and a flotation system, wherein the dense medium waste throwing system comprises a crusher, a classifying screen, a dense medium stirring barrel, a dense medium configuration barrel, a two-product dense medium cyclone, a first arc screen, a second arc screen, a first linear vibrating screen, a second linear vibrating screen, a first magnetic separator, a second magnetic separator, a first dilute medium barrel and a second dilute medium barrel, the classifying screen divides products into three size fractions of products of a first size fraction, a second size fraction and a third size fraction, and the second size fraction and the third size fraction are respectively separated by the dense medium waste throwing system and the flotation system to obtain scheelite concentrates, barren rocks and tailings, so that the scheelite beneficiation quality, the feeding quality before flotation, the concentrate index, the secondary slime index and the flotation index are reduced, the feeding quality is improved, and the separation efficiency is improved, Reducing production cost, improving economic benefit and the like.
Description
Technical Field
The invention relates to the technical field of scheelite beneficiation, in particular to a scheelite heavy medium tailing discarding and flotation combined separation system which is simple in system, less in secondary slime, capable of improving the feeding grade before scheelite flotation, guaranteeing the index of concentrate, reducing the production cost and improving the economic benefit.
Background
Tungsten, as an important nonferrous metal, is a strategic metal resource that is known to be irreplaceable in national economy and modern national defense. Because tungsten has the characteristics of high specific gravity, high hardness, high melting point and the like, the tungsten is widely applied to the fields of electronics, alloys, chemical engineering, medical treatment, military and the like.
The tungsten ore resource available at present is mainly scheelite. For the recovery of scheelite, the main beneficiation methods at the present stage are a flotation method and a gravity separation-flotation method. 1. The scheelite is recovered by a single flotation method, the tungsten grade fed into the flotation operation is low, and the flotation is performed in a full-grain grade manner, so that the flotation efficiency is low; the scheelite contains the same surface active site-Ca as fluorite, calcite, garnet and apatite2+Therefore, the index of the scheelite concentrate with higher grade and recovery rate is difficult to obtain; the whole-process flotation has large medicament consumption, higher production cost and difficult management; the influence of ore feeding property fluctuation on the index of the scheelite concentrate is large, and the production is easy to cause instability 2. the scheelite is recovered by adopting the traditional gravity separation-flotation method, and the removal of partial calcium-containing gangue minerals can be realized by equipment such as a shaking table, a spiral chute and the like by utilizing the specific gravity difference between the scheelite and the gangue minerals such as calcite, fluorite, garnet, apatite and the like. However, the feeding granularity required by equipment such as a shaking table, a spiral chute and the like is relatively fine and needs to be ground to be less than 0.3mm, so that the ore grinding cost, the flotation reagent cost and the management cost are still high, and meanwhile, in the ore grinding process, the secondary argillization phenomenon is aggravated, and the influence is the most seriousAnd (4) indexes of the final scheelite concentrate.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide the scheelite heavy medium tailing discarding and flotation combined separation system which has the advantages of simple system, less secondary slime, improvement of the feed grade before scheelite flotation, guarantee of the concentrate index, reduction of the production cost and improvement of the economic benefit.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a scheelite heavy medium tailing throwing and flotation combined separation system is characterized by comprising a heavy medium waste throwing system and a flotation system, wherein the heavy medium waste throwing system comprises a crusher, a classifying screen, a heavy medium stirring barrel, a heavy medium configuration barrel, a two-product heavy medium cyclone, a first arc screen, a second arc screen, a first linear vibrating screen, a second linear vibrating screen, a first magnetic separator, a second magnetic separator, a first dilute medium barrel and a second dilute medium barrel, a discharge port of the crusher is connected with the classifying screen, the classifying screen divides a product into three size fractions of products of a first size fraction, a second size fraction and a third size fraction, the second size fraction is a size fraction product between the product of the first size fraction and the product of the third size fraction, the product of the first size fraction is larger than the product of the third size fraction, the discharge port of the first size fraction is connected with an inlet of the crusher through a belt, the discharge port of the second grade product is connected with the feed port of the dense medium mixing barrel through a belt, the feed port of the dense medium mixing barrel is connected with the dense medium configuration barrel through a pipeline, the discharge port of the dense medium mixing barrel is communicated with the feed ports of two product dense medium cyclones through pipelines, the overflow outlet and the underflow outlet of the two product dense medium cyclones are respectively connected with the first sieve bend and the second sieve bend through pipelines, the undersize product outlets of the first sieve bend and the second sieve bend are respectively connected with the dense medium mixing barrel through pipelines, the oversize product outlets of the first sieve bend and the second sieve bend are respectively connected with the first linear vibrating screen and the second linear vibrating screen, the undersize product outlets of the first linear vibrating screen and the second linear vibrating screen are respectively connected with the feed port of the first dilute medium barrel and the feed port of the second dilute medium barrel, the discharge port of the first dilute medium barrel and the discharge port of the second dilute medium barrel are respectively connected with the first magnetic separator, the second magnetic separator is arranged on the discharge port of the dense medium mixing barrel, the dense medium mixing barrel is arranged on the second dilute medium mixing barrel, and the dense medium mixing barrel, the dense medium mixing barrel is arranged on the second mixing barrel, the dense medium is arranged on the dense medium mixing barrel, the dense medium is arranged on the dense medium mixing barrel, the dense medium mixing machine, the dense medium mixing machine, the dense medium is arranged on the dense medium, the dense medium is arranged on the dense medium mixing machine, the dense medium mixing machine, the dense medium mixing machine, the dense medium mixing machine, the import of second magnet separator links to each other, and the magnetism product export of first magnet separator, second magnet separator is connected with dense medium configuration bucket through the pipeline respectively, and the non-magnetism product export of first magnet separator, second magnet separator is washed the mouth through pipeline and linear vibrating screen and is linked to each other, and the non-magnetism product of first magnet separator, second magnet separator is as the sparge water of first linear vibrating screen and second linear vibrating screen, the product of oversize product export of first linear vibrating screen be the barren rock, the product of oversize of second linear vibrating screen is dense medium concentrate, the discharge gate of the product of oversize product export and third size fraction of second linear vibrating screen is connected with the flotation system through the pipeline.
The flotation system is provided with a ball mill, a flotation stirring barrel and a flotation unit, wherein a feed inlet of the ball mill is respectively connected with a discharge outlet of products of a third grade through a pipeline and an oversize product outlet of a second linear vibrating screen, ore discharge of the ball mill is connected with a feed inlet of the flotation stirring barrel through a pipeline, a discharge outlet of the flotation stirring barrel is connected with a feed inlet of the flotation unit through a pipeline, after being separated by the flotation unit, a final foam product is scheelite concentrate, and a final product in a tank is tailings.
The crusher is divided into a coarse crusher, a middle crusher and a fine crusher, wherein the coarse crusher, the middle crusher and the fine crusher are sequentially connected through pipelines and crushed by a three-stage crusher to a particle size A of basically dissociated target minerals and gangue minerals, and the particle size of the product A is one of 5mm, 10mm and 15 mm.
By adopting the system, the invention has the advantages of simple system, less secondary slime, improvement of the feed grade before scheelite flotation, guarantee of the concentrate index, reduction of the production cost, improvement of the economic benefit and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in the attached drawing, the scheelite heavy medium tailing throwing and flotation combined separation system is characterized by comprising a heavy medium waste throwing system and a flotation system, wherein the heavy medium waste throwing system comprises a crusher, a classifying screen 1, a heavy medium stirring barrel 2, a two-product heavy medium cyclone 3, a first arc-shaped screen 4, a second arc-shaped screen 5, a first linear vibrating screen 6, a second linear vibrating screen 7, a first magnetic separator 8, a second magnetic separator 9, a first dilute medium barrel 10, a second dilute medium barrel 11 and a heavy medium configuration barrel 12, a discharge port of the crusher is connected with the classifying screen 1, the classifying screen 1 divides products into three size fractions of products of a first size fraction, a second size fraction and a third size fraction, the products of the second size fraction are size fractions between the products of the first size fraction and the products of the third size fraction, and the products of the first size fraction are larger than the products of the third size fraction, the discharge port of the first grade is connected with the inlet of the crusher through a belt, the discharge port of the second grade is connected with the feed port of the dense medium mixing barrel 2 through a belt, the feed port of the dense medium mixing barrel 2 is connected with the dense medium configuration barrel 12 through a pipeline, the discharge port of the dense medium mixing barrel 2 is communicated with the feed ports of two product dense medium cyclones 3 through pipelines, the overflow outlet and the underflow outlet of the two product dense medium cyclones 3 are respectively connected with the first sieve bend 4 and the second sieve bend 5 through pipelines, the undersize product outlets of the first sieve bend 4 and the second sieve bend 5 are respectively connected with the dense medium mixing barrel 2 through pipelines, the oversize product outlets of the first sieve bend 4 and the second sieve bend 5 are respectively connected with the first linear vibrating screen 6 and the second linear vibrating screen 7, the undersize product outlets of the first linear vibrating screen 6 and the second linear vibrating screen 7 are respectively connected with the feed ports of the first dilute barrel 10 and the second dilute barrel 11, the discharge ports of the first dilute medium barrel 10 and the second dilute medium barrel 11 are connected with the first magnetic separator 8 and the inlet of the second magnetic separator 9, the magnetic product outlets of the first magnetic separator 8 and the second magnetic separator 9 are respectively connected with the heavy medium configuration barrel 12 through pipelines, the non-magnetic product outlets of the first magnetic separator 8 and the second magnetic separator 9 are connected with the flushing port of the linear vibrating screen through pipelines, the non-magnetic products of the first magnetic separator 8 and the second magnetic separator 9 are used as the flushing water of the first linear vibrating screen 6 and the second linear vibrating screen 7, the product outlet of the oversize product of the first linear vibrating screen 6 is waste stone, the product of the oversize product of the second linear vibrating screen 7 is heavy medium concentrate, and the product outlet of the oversize product of the second linear vibrating screen 7 is connected with the flotation system through pipelines.
Further, the flotation system is provided with a ball mill 13, a flotation mixing tank 14 and a flotation unit, wherein a feed inlet of the ball mill 13 is respectively connected with a discharge outlet of products of a third grade through a pipeline and an oversize product outlet of the second linear vibrating screen 7, an ore discharge of the ball mill 13 is connected with a feed inlet of the flotation mixing tank 14 through a pipeline, a discharge outlet of the flotation mixing tank 14 is connected with a feed inlet of the flotation unit through a pipeline, after being separated by the flotation unit, the final foam product is white tungsten concentrate, the final product in the tank is tailings, the flotation unit comprises a first flotation unit 15, a second flotation unit 16, a third flotation unit 17 and a fourth flotation unit 18, a discharge outlet of the flotation mixing tank 14 is connected with a feed inlet of the first flotation unit 15 through a pipeline, a foam product outlet of the first flotation unit 15 is connected with a feed inlet of the second flotation unit 16 through a pipeline, the product outlet in the cell of the first flotation unit 15 is connected with the feed inlet of the fourth flotation unit 18 through a pipeline, the product of the product outlet in the cell of the fourth flotation unit 18 is tailings, the foam product outlet of the second flotation unit 16 is connected with the feed inlet of the third flotation unit 17 through a pipeline, the product of the foam product outlet of the third flotation unit 17 is a scheelite concentrate product, the foam product outlet of the fourth flotation unit 18 and the product outlet in the cell of the second flotation unit 16 are connected with the feed inlet of the first flotation unit 15 through pipelines, the product outlet in the cell of the third flotation unit 17 is connected with the feed inlet of the second flotation unit 16, the flotation system is subjected to primary roughing by the first flotation unit 15, and (3) a mineral separation process flow of twice concentration of the second flotation unit 16 and the third flotation unit 17 and once scavenging of the fourth flotation unit 18 is adopted, and the final scheelite concentrate is obtained after separation.
Further, the crusher is divided into a coarse crusher 19, a middle crusher 20 and a fine crusher 21, the coarse crusher 19, the middle crusher 20 and the fine crusher 21 are sequentially connected through a pipeline and crushed by a three-stage crusher to a particle size A of basic dissociation of target minerals and gangue minerals, and the particle size of the product A is one of particle sizes of 5mm, 10mm and 15 mm.
The sorting process comprises the following steps:
heavy medium waste throwing system
a. Crushing: crushing the ore entering the sorting operation by a coarse crushing crusher 19, a middle crushing crusher 20 and a fine crushing crusher 21 to obtain a granularity A of basic dissociation of a target mineral and a gangue mineral;
b. grading: screening the crushed ore by a classifying screen 1 to obtain three size fractions of products of a first size fraction, a second size fraction and a third size fraction, wherein the first size fraction is a product with a particle size larger than A, the third size fraction is a product with a particle size smaller than B, the second size fraction is a product with a particle size larger than B and smaller than A, the product with the particle size B is 0.5mm, the product with the particle size A is one of the particle sizes of 5mm, 10mm or 15mm, the product with the particle size larger than A returns to a feed inlet of a fine crusher 21, the product with the particle size larger than B and smaller than A is used as a feed material for heavy medium separation, and the product with the particle size smaller than B is fed into subsequent flotation operation;
c. heavy medium sorting: firstly, dense medium suspension liquid with a certain density is configured in a dense medium configuration barrel 12, the dense medium suspension liquid is fed into a dense medium stirring barrel 2 through a pipeline, the dense medium suspension liquid is mixed with the product with the particle size larger than B and smaller than A obtained in the step B, the mixture is fed into two product dense medium cyclones 3 for separation, settled sand products and overflow products are obtained, the separated settled sand products and overflow products respectively pass through a first arc-shaped sieve 4 and a second arc-shaped sieve 5, oversize products of the first arc-shaped sieve 4 and the second arc-shaped sieve 5 are respectively fed into a first linear vibrating sieve 6 and a second linear vibrating sieve 7, after the dense medium is removed through water adding and washing, oversize outlet products of the first linear vibrating sieve 6 are waste rocks, oversize products of the second linear vibrating sieve 7 are dense medium concentrates, undersize outlet products of the first linear vibrating sieve 6 and the second linear vibrating sieve 7 enter a first dilute medium barrel 10 and a second dilute medium barrel 11, dilute medium in the first dilute medium barrel 10 and the second dilute medium barrel 11 enter a first magnetic separator 8 and a second magnetic separator 9, after the dilute medium is magnetically separated by a first magnetic separator 8 and a second magnetic separator 9, magnetic products enter a dense medium configuration barrel 12, non-magnetic separation products are used as flushing water of a first linear vibrating screen 6 and a second linear vibrating screen 7, undersize products of a first arc-shaped screen 4 and a second arc-shaped screen 5 directly enter a dense medium stirring barrel 2, and dense medium concentrate and products with the particle size smaller than B screened by a classifying screen 1 enter a flotation system;
(II) flotation system
a. Grinding: combining the dense medium concentrate obtained in the step B and the step c in the dense medium waste throwing system with the product with the particle size smaller than B screened by the classifying screen 1, feeding the mixture into a grinding machine for grinding until the mixture is ground into fine-grained material with the particle size suitable for the requirement of the subsequent flotation process;
b. adjusting the ground fine-grained materials to about 30% of pulp concentration, feeding the pulp into a flotation stirring barrel 14, adding a flotation agent at the same time, fully stirring the pulp, feeding the pulp into a first flotation unit 15, feeding a foam product of the first flotation unit 15 into a second flotation unit 16, feeding a product in a cell of the first flotation unit 15 into a fourth flotation unit 18, feeding a foam product of the second flotation unit 16 into a third flotation unit 17, feeding a foam product of the third flotation unit 17 into scheelite concentrate, feeding a product in a cell of the fourth flotation unit 18 into tailings, feeding a product in a cell of the second flotation unit 16 and a foam product of the fourth flotation unit 18 into the first flotation unit 15 for secondary flotation, feeding a product in a cell of the third flotation unit 17 into the second flotation unit 16 for secondary flotation, and feeding the flotation system into a flotation unit through primary roughing of the first flotation unit 15, twice fine-concentration of the second flotation unit 16 and the third flotation unit 17, And (3) carrying out a mineral separation process flow of primary scavenging of the fourth flotation unit 18 to obtain final scheelite concentrate after separation.
In the scheme, the dense medium in the dense medium configuration barrel 12 is silicon iron powder, the content of a magnetic substance is more than or equal to 95%, the fineness of minus 325 meshes is more than or equal to 90%, and the phenomena of coking, caking and bonding are avoided.
In the scheme, the density of the dense medium suspension liquid in the dense medium configuration barrel 12 is 1.70-3.00 g/m 3.
In the scheme, the dense medium suspension and the second size fraction ore are fed into a cyclone through a slurry pump at the pressure of 0.05-0.30 MPa, the heavy medium suspension and the second size fraction ore are separated under the action of centrifugal force, the underflow product of the cyclone is subjected to subsequent treatment to form dense medium concentrate, the overflow product is subjected to subsequent treatment to form waste stone, the slurry pump is connected with a variable frequency motor, and the feeding pressure is realized by adjusting the frequency of the slurry pump through the variable frequency motor.
In the scheme, the waste stones can be screened by a vibrating screen with the screen hole size of 5mm, the oversize is stones, the undersize is sand, and the waste stones and the undersize can be sold as building materials.
In the scheme, the dense medium concentrate and the raw ore of the third size fraction are fed into a ball mill 13, and the ore is ground to-200 meshes which account for 60% -90%.
In the scheme, the regulator, the collector and the foaming agent are sequentially added into the flotation stirring barrel 14, stirred for a certain time and then fed into the flotation machine for recycling.
Compared with the traditional single flotation system, the separation system has the advantages of lower production cost, higher flotation efficiency and more stable operation index, and simultaneously solves the problem that scheelite and calcium-containing gangue minerals are similar in floatability and difficult to separate, which is difficult to solve by a single flotation method; compared with the traditional gravity separation-flotation process, partial gangue minerals are thrown before the ores are fed into a grinding machine, on one hand, the generation of secondary slime can be reduced, on the other hand, the feeding grade before the scheelite flotation can be obviously improved, the production cost can be greatly reduced while the indexes of the concentrates are ensured, the economic benefit of a mine is improved, meanwhile, as undersize products of the first arc-shaped sieve 4 and the second arc-shaped sieve 5 enter the heavy medium stirring barrel 2, undersize products of the first linear vibrating sieve 6 and the second linear vibrating sieve 7 enter the first magnetic separator 8 and the second magnetic separator 9 after passing through the first dilute medium barrel 10 and the second dilute medium barrel 11, the undersize products enter the heavy medium configuration barrel 12 after passing through the first magnetic separator 8 and the second magnetic separator 9, the heavy medium suspension density is adjusted to be proper by adding water and ferrosilicon powder, the heavy medium stirring barrel 2 is fed, the process realizes the cyclic utilization of the heavy medium, the method has the advantages of simple system, less secondary slime, improvement of the feed grade before scheelite flotation, guarantee of the concentrate index, reduction of the production cost, improvement of the economic benefit and the like.
Examples
In a certain scheelite in China, the content of WO3 in a raw ore is 0.33%, and calcium-containing minerals such as fluorite, calcite and the like in the ore have great influence on the indexes of the concentrate. The scheelite is treated by adopting a dense medium tailing discarding and flotation combined separation system, and the method comprises the following specific steps: firstly, raw ore is fed into a crusher from a bin through a feeder to be crushed, and after three-stage crushing is carried out on the raw ore through a coarse crusher 19, a middle crusher 20 and a fine crusher 21 in sequence, screening the fine crushed product, obtaining three size fractions of a first size fraction, a second size fraction and a third size fraction after screening by a classifying screen 1, wherein the first size fraction is a product with a particle size larger than A, the third size fraction is a product with a particle size smaller than B, the second size fraction is a product with a particle size larger than B and smaller than A, the product with a particle size B is 0.5mm, the product with a particle size A is one of the particle sizes of 5mm, 10mm or 15mm, and the particle size of 10mm is selected in the embodiment, wherein, the product with the grain diameter larger than A returns to the feed inlet of the fine crusher 21, the product with the grain diameter larger than B and smaller than A is used as the feed material for heavy medium separation, and the product with the grain diameter smaller than B is fed to the subsequent flotation operation;
in the dense medium configuration barrel 12, ferrosilicon powder (the content of magnetic substances is more than or equal to 95 percent, and the fineness of minus 325 meshes is more than or equal to 90 percent) and water are configured into dense medium suspension with the density of 2.00g/m3, the dense medium suspension is fed into the dense medium stirring barrel 2 through a pipeline, and after the dense medium suspension is uniformly mixed with the second-grade coarse-grained raw ore, the dense medium suspension is fed into two products of dense medium cyclones 3 by a slurry pump for separation, and a sand setting product and an overflow product are obtained. The separated overflow product sequentially passes through a first arc-shaped screen 4 and a first linear vibrating screen 6, heavy media are removed after washing with water, waste rocks are obtained on the screen, the separated sand setting product sequentially passes through a second arc-shaped screen 5 and a second linear vibrating screen 7, heavy media are removed after washing with water, and the product on the screen is heavy media concentrate; the tailing discarding rate of the operation reaches 40 percent, and the operation recovery rate is 83.91 percent;
the product under the sieve of the sieve bend is qualified dense medium suspension liquid, and directly enters the dense medium stirring barrel 2, the linear vibrating sieve is fed on the sieve bend, after being washed by water, the dilute medium under the sieve passes through the first dilute medium barrel 10, the second dilute medium barrel 11, the first magnetic separator 8 and the second magnetic separator 9, and then enters the dense medium configuration barrel 12 after being concentrated and magnetically separated, so that the recycling of the medium is realized, and the concentrated magnetically separated nonmagnetic product is used for washing water of the linear vibrating sieve;
mixing the dense medium concentrate obtained by heavy medium separation of the second size fraction and the raw ore of the third size fraction, and feeding the mixture into a ball mill 13 for grinding until the mixture is ground to 80% of minus 200 meshes;
and (3) adjusting the finely ground fine-grained materials to about 30% of pulp concentration, feeding the pulp into a flotation stirring barrel 14, sequentially adding a regulator, a collecting agent and a foaming agent, fully stirring, feeding the pulp into flotation operation, and performing flotation flow of once roughing, twice fine concentration and once scavenging to obtain final scheelite concentrate, wherein the indexes are shown in the following table.
From the comparison, the pure flotation process is compared with the heavy medium tailing discarding-flotation combined process, and the grade and the total recovery rate of the scheelite concentrate are obviously higher than those of the product obtained by the pure flotation process.
Claims (3)
1. A scheelite heavy medium tailing throwing and flotation combined separation system is characterized by comprising a heavy medium waste throwing system and a flotation system, wherein the heavy medium waste throwing system comprises a crusher, a classifying screen, a heavy medium stirring barrel, a heavy medium configuration barrel, a two-product heavy medium cyclone, a first arc screen, a second arc screen, a first linear vibrating screen, a second linear vibrating screen, a first magnetic separator, a second magnetic separator, a first dilute medium barrel and a second dilute medium barrel, a discharge port of the crusher is connected with the classifying screen, the classifying screen divides a product into three size fractions of products of a first size fraction, a second size fraction and a third size fraction, the second size fraction is a size fraction product between the product of the first size fraction and the product of the third size fraction, the product of the first size fraction is larger than the product of the third size fraction, the discharge port of the first size fraction is connected with an inlet of the crusher through a belt, the discharge port of the second grade product is connected with the feed port of the dense medium mixing barrel through a belt, the feed port of the dense medium mixing barrel is connected with the dense medium configuration barrel through a pipeline, the discharge port of the dense medium mixing barrel is communicated with the feed ports of two product dense medium cyclones through pipelines, the overflow outlet and the underflow outlet of the two product dense medium cyclones are respectively connected with the first sieve bend and the second sieve bend through pipelines, the undersize product outlets of the first sieve bend and the second sieve bend are respectively connected with the dense medium mixing barrel through pipelines, the oversize product outlets of the first sieve bend and the second sieve bend are respectively connected with the first linear vibrating screen and the second linear vibrating screen, the undersize product outlets of the first linear vibrating screen and the second linear vibrating screen are respectively connected with the feed port of the first dilute medium barrel and the feed port of the second dilute medium barrel, the discharge port of the first dilute medium barrel and the discharge port of the second dilute medium barrel are respectively connected with the first magnetic separator, the second magnetic separator is arranged on the discharge port of the dense medium mixing barrel, the dense medium mixing barrel is arranged on the second dilute medium mixing barrel, and the dense medium mixing barrel, the dense medium mixing barrel is arranged on the second mixing barrel, the dense medium is arranged on the dense medium mixing barrel, the dense medium is arranged on the dense medium mixing barrel, the dense medium mixing machine, the dense medium mixing machine, the dense medium is arranged on the dense medium, the dense medium is arranged on the dense medium mixing machine, the dense medium mixing machine, the dense medium mixing machine, the dense medium mixing machine, the import of second magnet separator links to each other, and the magnetism product export of first magnet separator, second magnet separator is connected with dense medium configuration bucket through the pipeline respectively, and the non-magnetism product export of first magnet separator, second magnet separator is washed the mouth through pipeline and linear vibrating screen and is linked to each other, and the non-magnetism product of first magnet separator, second magnet separator is as the sparge water of first linear vibrating screen and second linear vibrating screen, the product of oversize product export of first linear vibrating screen be the barren rock, the product of oversize of second linear vibrating screen is dense medium concentrate, the discharge gate of the product of oversize product export and third size fraction of second linear vibrating screen is connected with the flotation system through the pipeline.
2. The scheelite heavy medium tailing discarding and flotation combined separation system according to claim 1, wherein the flotation system comprises a ball mill, a flotation agitator and a flotation unit, wherein a feed inlet of the ball mill is connected with a discharge outlet of the product of the third size fraction through a pipeline and an oversize product outlet of the second linear vibrating screen, respectively, a discharge outlet of the ball mill is connected with a feed inlet of the flotation agitator through a pipeline, a discharge outlet of the flotation agitator is connected with a feed inlet of the flotation unit through a pipeline, after separation by the flotation unit, the final foam product is scheelite concentrate, and the final in-tank product is tailings.
3. The scheelite heavy medium tailing and flotation combined separation system according to claim 1, wherein the crushers are divided into a coarse crusher, a middle crusher and a fine crusher, the coarse crusher, the middle crusher and the fine crusher are sequentially connected through pipelines and crushed by a three-stage crusher to a particle size A of basic dissociation of target minerals and gangue minerals, and the particle size A is one of 5mm, 10mm or 15 mm.
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| CN115254398A (en) * | 2022-09-01 | 2022-11-01 | 山东黄金矿业科技有限公司选冶实验室分公司 | Method for pre-selecting and discarding gold ores and reducing excessive grinding |
| CN118002290A (en) * | 2024-04-10 | 2024-05-10 | 湖南有色新田岭钨业有限公司 | Scheelite preselection waste disposal process |
| WO2024212608A1 (en) * | 2023-04-13 | 2024-10-17 | 威海市海王旋流器有限公司 | All-size heavy medium beneficiation system and beneficiation method |
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| CN115254398A (en) * | 2022-09-01 | 2022-11-01 | 山东黄金矿业科技有限公司选冶实验室分公司 | Method for pre-selecting and discarding gold ores and reducing excessive grinding |
| CN115254398B (en) * | 2022-09-01 | 2024-06-07 | 山东黄金矿业科技有限公司选冶实验室分公司 | Method for pre-dressing waste disposal and overgrinding reduction of gold ore |
| WO2024212608A1 (en) * | 2023-04-13 | 2024-10-17 | 威海市海王旋流器有限公司 | All-size heavy medium beneficiation system and beneficiation method |
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