KR101053216B1 - Physical processing apparatus for being innocuous waste tailing - Google Patents

Abstract

PURPOSE: A wasted tailing detoxificating physical processing apparatus is provided to prevent environmental contamination by generating recyclable soil based on wasted tailing containing toxic heavy metal. CONSTITUTION: A feeder(2) supplies tailing from a metal mine. A trommel screen(4) classifies foreign materials contained in the tailing. A first concentration controller(5) controls the concentration of the tailing. A wet type cyclone(6) classifies the tailing into fine particles and an assembled product and inducts the fine particles to a chemical processing facility or a scrapping facility. A classifier(7) classifies the assembled product. A helix gravity classifier(8) classifies the assembled product into heavy mineral and light mineral based on weights. A second concentration controller(10) controls the concentration of the mineral liquid of heavy mineral tailing. A magnetic classifier(11) classifies magnetic materials from the tailing. A table classifier(13) inducts toxic heavy mineral to be scrapped. Other heavy mineral is distributed and dehydrated.

Description

Waste tailings harmless physical processing unit {PHYSICAL PROCESSING APPARATUS FOR BEING INNOCUOUS WASTE TAILING}

The present invention relates to a waste tailings harmless physical treatment apparatus, and more particularly, to reduce the heavy metals contained in the mineral tailings (tailings) to below the environmental standard through physical treatment, which can harm the tailings tailings. It relates to a processing device.

Metallic mineral debris is mainly composed of nonmetallic minerals such as quartz, mica, feldspar, clay, etc., and contains various kinds of metal minerals. Among these minerals, metal minerals are a cause of polluting the surrounding environment such as groundwater, surface water and soil by eluting heavy metals by oxidation and reduction reactions, while non-metallic minerals are composed of chemically stable compounds to cause chemical environmental pollution. It also has the potential to cause environmental hazards such as dust scattering and loss.

In general, treatment methods for reducing environmental pollution from tailings can be classified into a landfill treatment method that blocks waste from soil, groundwater, surface water, etc., and a method of adsorbing and separating toxic components from leachate to make leachate harmless. .

In Korea, the landfill treatment method is mostly used as a treatment method for tailings in Korea. On the other hand, in the case of foreign countries, it is possible to strictly grasp the contamination state of the tailings storage and isolate the harmful components contained in the waste, and finally, the environment such as blocking type landfill. Friendly stabilization treatment is applied.

The landfill treatment method has the advantage that it can be harmless by blocking the landfill in a short time around the dumpyard, but it is difficult to utilize the landfill site, and depending on the life of the landfill material, there is a problem of reprocessing after a certain period of time. .

Harmful treatment of leachate is also a method that is useful for the detoxification of effluents by removing certain harmful components, but there is a problem that requires continuous operation of the process unless the removal of pollutant is fundamental.

In order to solve this problem, there is a patent No. 0450017 (treatment method for the detoxification and recycling of the waste-rock mine tailings).

The patent, as shown in the claims, homogeneous mixing step (S100) of transporting the bituminous mine tailings tailings using a belt conveyor to homogeneously mixed; A mineral liquid manufacturing step (S200) of preparing a mineral liquid by adding the mixture to a water tank together with water; A specific gravity separation step (S300) of separating the metallic mineral and the non-metallic mineral by passing the mineral liquid through a screen having a predetermined size so as to remove various contaminants of the waste tailings and then using a sand pump. A concentrated dehydration step (S400) for concentrating and dehydrating the low specific gravity nonmetallic minerals separated and selected in the specific gravity selection step; Drying step (S500) for drying the concentrated dewatered cake using a rotary dryer; Disintegrating step (S600) of crushing the agglomerated product formed in the drying step with a hammer crusher attached to a screen of a predetermined size; A particle size separation step of separating the disintegrated product into particulate minerals and granulated minerals based on a predetermined particle size using an air classifier (S700); And a magnetic separation step of separating and selecting magnetic minerals and non-magnetic minerals by using a magnetic separator for the assembled minerals having more than the particle size separated in the separation step (S800). In practice, this process sequence cannot detoxify the tailings in metal mines such as gold, silver, zinc, and copper, and the process is so complex that the initial investment and maintenance costs are expensive and the desalination time is long. There are disadvantages.

There is also a patent No. 0928062 (Advanced Screening Method for Purification of Artificial Heavy Metal Contaminated Soil).

The patent, a) specific gravity screening step of separating the heavy minerals of 3.0 to 10.0 specific gravity from the light minerals from the artificial heavy metal contaminated soil sifted using a 5 mm sieve; b) a wet cyclone step of separating and classifying the fine particles including the heavy metal material from the coarse particles not containing the heavy metal material by using gravity and centrifugal force from the non-selected hard mineral; And c) any one or more foaming agents selected from pine oil, aliphatic alcohols, glycols and any one or more selected from oils, fatty acids, phosphates, and amine salts from the finely divided fine particles. Float screening step of separating hydrophobic heavy metal material from the fine particles by the addition of a catcher; consisting of the specific gravity screening before separation of the particle size, the efficiency of specific gravity screening is reduced, the subsequent cut size of the cyclone (cut size) 150 The mesh is to be suitable for subsequent flotation, and in the case of flotation, the tailings that have undergone long weathering have low efficiency and can be used only in limited cases, and there is a problem that a separate foaming agent and a catcher should be used.

The present invention is to solve the problems as described above, by using a physical treatment (high-floor screening, magnet screening and second-specific gravity screening, etc.) process of a material with a high content of heavy metals such as pyrite and arsenite in the tailings harmful metals It is an object of the present invention to provide a waste tailings harmless physical treatment apparatus capable of reducing tailings to be less harmful than environmental standards.

The waste tailings harmless physical processing apparatus according to the present invention for achieving the above object comprises: a trommel screen for gravity-selecting foreign substances including tailings and water and the tree roots contained in the tailings; A first concentration controller for adjusting the concentration of the tailings from which the foreign substance has been removed; A wet cyclone that selects the tailings of which the concentration is controlled through the first concentration regulator into fine particles and granulated products having different particle sizes through a cyclone method and guides the fine products to a chemical treatment facility or a waste facility; A spiral specific gravity sorter for sorting the granulated products selected by the wet cyclone into heavy minerals and hard minerals having different weights and transporting the hard minerals to be stored; A second concentration controller for adjusting the concentration of the mineral liquid of the heavy mineral tailings selected by the spiral specific gravity separator; A magnetic separator for magnetically selecting magnetic materials contained in the tailings whose concentration is controlled by the second concentration controller; A table sorter for sorting the tailings of non-magnetic material in which magnetic material is selected by the magnetic sorter into light and heavy minerals to supply harmless hard minerals to the product and to induce harmful heavy minerals; A classifier for sorting foreign matters selected by the table sorter; It characterized in that it comprises a dehydrator for dehydrating the heavy minerals selected by the classifier.

According to the waste tailings harmless physical treatment apparatus according to the present invention, environmental pollution can be prevented by producing a soil that can be recycled through specific gravity screening-magnetic screening-flotation screening-classification from tailings containing a large amount of harmful heavy metals such as arsenic. You can create new costs.

1 is an overall configuration of the waste tailings harmless physical processing apparatus according to the present invention.

The waste tailings harmless physical processing apparatus according to the present invention is a hopper (1) supplied with the tailings (mineral debris) of the metal mine, and a screw feeder (FEEDER) for supplying the tailings supplied to the hopper 1 by a predetermined amount. (2) As a conveying means for conveying the tailings supplied by the screw feeder (2), for example, a tray for non-selecting foreign substances such as wood roots, etc. contained in the tailings conveyed by the conveying conveyor (3), the conveying conveyor (3) The tailings of which concentration is controlled through the first concentration controller 5 and the first concentration controller 5 controls the concentration of the tailings from which the foreign matter is removed through the rommel screen 4 and the trommel screen 4. Wet cyclone (6) for sorting particulates and granulated products), Helical gravity sorter (8) for sorting the granulated products selected by wet cyclone (6) by weight (heavy mineral and hard mineral), Helical gravity sorter ( 2nd concentration tank to control the mineral liquid concentration of the heavy minerals selected by 8) 10, a magnetic separator 11 for selecting the magnetic material contained in the tailings whose concentration is controlled by the second concentration regulator 10, the tailings of the non-magnetic material, the magnetic material is selected as light and heavy minerals Table sorter 13 for sorting, classifier 15 for removing water in order to discard the heavy minerals sorted by the table sorter 13, and dehydrator 16 for dewatering the heavy minerals sorted by classifier 15 ), And each component will be described in detail below.

The hopper 1 supplies a certain amount of tailings to the screw feeder 2 while storing a certain amount of tailings. For example, the hopper 1 may have a tubular structure having an inlet at an upper portion thereof and an outlet at a lower portion thereof, thereby improving efficiency of harmless treatment of the tailings. The tailings can be fed to the hopper 1 after being dried (eg naturally dried) in the yard.

The screw feeder (2) is composed of a housing having an inlet and an outlet, and a screw installed in the housing so as to rotate in place by using a driving motor as a driving source. To supply.

The transfer conveyor 3 transfers the tailings supplied from the screw feeder 2 to the trommel screen 4, and may be variously configured according to the positions of the screw feeder 2 and the trommel screen 4.

Trommel screen (4) is to screen the foreign matter larger than the tailings (tree roots, stones, etc.) from the foreign matter contained in the tailings, is provided with a plurality of screening holes for sorting the foreign matter and consists of a rotating screen rotated by centrifugal force It is possible to receive the tailings from the screw feeder (2) to receive water from the water tank (17) to separate the tailings and foreign matter through the water pressure by the water injection and the sorting hole. The foreign matter selected through the trommel screen 4 will be disposed of, and the tailings and water are supplied to the first concentration regulator 5. The tailings and water supplied to the trommel screen 4 may be tailings: water = 1: 1: 2-3 by weight.

The first concentration regulator 5 is supplied with tailings and water from the trommel screen 4 to the wet cyclone 6, and adjusts the concentration of the mineral liquid to 15 to 40% by weight, preferably 20% by weight. If the concentration of the mineral liquid is more than 40%, the viscosity increases and thixotropy occurs, causing the pump power to increase.As the concentration of the mineral liquid is less than 15%, the amount of water used is high, so the tailings transportation amount is relatively small. Cause rise. The first concentration regulator 5 is composed of a stirring device and a turbulence forming plate to prevent the clogging of the pump due to precipitation of the tailings in the mineral liquid as well as the homogeneous mixing of the mineral liquid. The first concentration regulator 5 also allows particulate tailings to be dispersed from the assembled tailings surface.

The wet cyclone 6 receives 30% by weight of the mineral liquid concentration tailings from the first concentration regulator 5 through a sand pump, etc., and sorts them into particulates and granulated products having different specific gravity and particle sizes. The fines of heavy metals generally have a high content of heavy metals and are thus disposed of in a disposal or chemical treatment process.

Since the input amount of the mineral liquid should be constant, the cut size and the separation efficiency (separation efficiency) of the cyclone were controlled by the diameter control of the vortex and the apex, and the basic separation particle size was 200 mesh.

The spiral specific gravity separator 8 selects the coarse product selected by the wet cyclone 6 into heavy minerals and hard minerals having different specific gravity.

Spiral specific gravity sorter (8) is a plurality (shown as four in the figure) is installed in parallel can be processed at the same time by receiving the granulated product through the distributor 7 to reduce the processing speed.

The hard minerals selected by the spiral specific gravity separator 8 are harmless, having many gangue minerals with a low content of heavy metal, and can be discharged without going through the following process. If necessary, the hard minerals selected by the spiral gravity separator 8 are stored in the light mineral recovery tank 9 for analysis, and if the heavy metal content is higher than the reference value, the subsequent process (second concentration controller 10) is performed. Otherwise it may be discharged.

The second concentration controller 10 receives the tailings and water from the spiral specific gravity separator 8 and adjusts the concentration of the mineral liquid to 15 to 40% by weight, preferably 20%, and then supplies it to the magnetic separator 11. Mineral liquid concentration is the same as already described in the above-mentioned first concentration regulator 5.

The magnetic separator 11 receives the tailings having a concentration of the mineral solution having a concentration of 20% by weight from the second concentration controller 10 and selects the magnetic material contained in the tailings.

The magnetic separator 11 includes, for example, a sorting tank having an inlet and an outlet, and a magnetic sorting belt that is installed in an endless track in the sorting tank and adsorbs and removes magnetic material from the tailings introduced into the sorting tank by magnetic force. The selected magnetic material may be recovered in a separate magnetic recovery tank 12 and the tailings, which are nonmagnetic materials, are supplied to a subsequent process.

Magnetic screening by itself does not contribute much to harmlessness, but if the magnetic force is increased by a certain tera, it has the effect of concentrating some heavy metal oxide minerals such as iron and magnetite as well as pyrite.

The table selector 13 separates the tailings of the non-magnetic material from which the magnetic material is selected into a harmless hard mineral and a heavy metal concentrated heavy mineral.

The table sorting process is to increase the separation rate of harmless tailings and contaminated tailings by further selecting non-harmful tailings from the tailings from the heavy minerals in the spiral gravity screening machine.

The table selector 13 is composed of a raw material input section, a table on which a riffle is attached, a water distribution device for injecting water into the table, a drive motor for reciprocating the table, a support for supporting the table, and the like. The table is sprayed with water by inclining 2-4 ° in the short side direction perpendicular to the reciprocating (front and rear) direction in the long side direction of the rectangle in a two-dimensional plane.

When the table is reciprocated from the driving motor, the mineral residue moves in the reciprocating direction, and when water is flowed at right angles to the reciprocating motion, the small and light particles move in the direction of water flow due to the influence of water flow more than the reciprocating force. Particle separation occurs by moving in the reciprocating direction due to the reciprocating effect rather than the flow effect. Here, the harmless hard minerals are stored in the product tank 14 as soil which can be used as a harmless product by reducing heavy metals from the tailings, which is the purpose of this process, and the harmful heavy minerals are classified into the classifier 15 and the dehydrator 16. Is processed via).

The classifier 15 is to supply only the heavy minerals to the dehydrator 16 by removing the water in order to increase the dewatering efficiency by the dehydrator 16, the bottom of the tank inclined upward toward one side, is installed inclined inside the tank. It may be composed of a transfer screw for transferring the heavy minerals precipitated in the tank. The classifier 15 may remove only foreign matters while also transporting heavy minerals.

The dehydrator 16 dehydrates heavy minerals from which water has been removed by the classifier 15, for example, by a press method or the like.

The waste tailings harmless physical treatment method according to the present invention is as follows.

(S10) tailings feed.

The tailings generated from the metal mines are piled up and prepared by yarding, etc., and the tailings are put into the hopper 1 through equipment such as payloader. The hopper 1 is supplied to the screw feeder 2 in small amounts in a state where a certain amount of tailings is stored because the cross sectional area of the outlet is smaller than that of the inlet. The screw feeder 2 distributes and supplies a fixed amount of tailings by the constant speed movement of the screw.

(S20) wet sorting.

The tailings supplied by the screw feeder 2 are supplied to the trommel screen 4 via the transfer conveyor 3, and water is supplied to the trommel screen 4 from the water tank 17.

Trommel screen 4 is a mixture of tailings and water, foreign matter such as tree roots (referred to foreign matter lighter than the tailings) contained in the tailings is suspended in the water and the tailings go to the bottom of the trommel screen (4) I sit down.

(S30) Adjust the primary tailings concentration.

The first concentration regulator 5 is supplied with tailings and water in which foreign matters are sorted by the trommel screen 4. The first concentration controller 5 adjusts the concentration of the mixture of tailings and water to 20 to 40% by weight based on 100% by weight of the mixture.

(S40) particle size screening.

The tailings whose concentration is adjusted by the first concentration regulator 5 is supplied to the wet cyclone 6 through a sand pump or the like. The wet cyclone 6 sorts into small particle size (light weight) fine products and granule products having a larger particle size than the fine product by the cyclone method.

The fines can be discarded or disposed of through chemical treatment because the heavy metal content is higher than the granulated product, and the granulated products can be harmless through the subsequent process, and thus the fines selected in the wet cyclone 6 Is transferred to a separate disposal or chemical treatment facility and the coarse product is sent to the spiral sorter 8 or to the distributor 7 if the distributor 7 is applied.

(S50) Checkweighing.

The granulated products selected in the wet cyclone 6 are distributed to the plurality of spiral sorters 8 via the distributor 7.

The coarse product tailings are fed to each spiral sorter 8 and rotate in a spiral manner. In the process, the heavy tailings and the hard minerals are different in weight, and the light minerals are harmless without any subsequent process. Recovered to the mineral recovery tank (9), heavy minerals are supplied to the subsequent process.

(S60) Secondary tailings concentration adjustment.

The heavy minerals selected by the plurality of spiral sorters 8 are supplied to the second concentration controller 10, the second concentration regulator 10 to adjust the concentration of tailings in water to 20 to 40% by weight.

(S70) Magnetic Screening.

In the tailings, various kinds of minerals are mixed and mixed. The magneto-responsive properties of these minerals show that the quartz minerals are nonmagnetic minerals while the mica minerals are paramagnetic, and the iron minerals of the metal minerals are ferromagnetic. By using the difference in magnetic sensitive characteristics, the magnetic separator 11 separates and selects nonmagnetic, paramagnetic and ferromagnetic minerals. Metallic minerals mixed in the tailings can be separated and screened in specific gravity screening and flotation screening processes using the difference in specific gravity and surface properties.However, the tailings have been accumulated for a long time, so the characteristics of the mineral surface are weathered and the characteristics change. Iron-containing metal minerals are oxidized to have a porosity, and those which cannot be separated or screened in floating and specific gravity screening are selected by magnetic screening. In addition, the separation of magnetic and non-magnetic minerals among the non-metallic minerals improves the quality of each mineral, thereby improving utilization as a raw material and improving value added.

The magnetic material sorted through the magnetic sorter 11 is recovered to the magnetic material recovery tank 12, and the tailings are supplied to the table sorter 13.

(S80) Vibration Screening.

The tailings of the nonmagnetic material from which the magnetic material is selected are supplied to the table sorter 13, and the table sorter 13 separates the tailings of 1 mm or less and 0.075 mm or more into light and heavy minerals by using a specific gravity difference. The tailings move in the vibratory direction due to the reciprocating vibration movement, so that heavy and heavy particles move under the table, and light and small particles move on heavy minerals. At this time, by flowing the water at a proper speed and at a right angle to the vibrating motion to move the light minerals in the flow direction of the water to separate the light minerals from the heavy minerals. Since the hard minerals are harmless without a separate treatment, they are recovered by the product tank 14, and the heavy minerals are harmful and cannot be recycled into the soil.

(S90) Disposal.

The heavy minerals sorted through the table selector 13 are first removed from the water through the classifier 15, dehydrated by the dehydrator 16, loaded on a yard, and disposed of.

Hereinafter, an embodiment according to the present invention will be described.

Table 1 below shows the chemical composition according to the soil pollution test method of tailings deposited in Korea's only mine, Samkwang mine, Table 2 is a table showing the standards of heavy metals.

Table 1

[Table 2]

As shown in Table 1 and Table 2, the As component of the Mine tailings tailings exceeded the countermeasures, and the concentrations of harmful components exceeded the standard values in the case of the only mine tailings. It was confirmed that. As of harmful components showed a high concentration, which is presumed to be due to arsenopyrite (FeAsS) contained in the tailings.

Table 3 and Table 4 show the chemical composition by the waste process test method of tailings.

[Table 3]

Table 4

As a result of examining the characteristics of the product by separating the tailings by inlet, as shown in Table 5 below, the concentration of harmful components was increased in the analysis by soil pollution test method and waste process test method. As component exceeded the standard of concern for soil pollution process test only in fine products of less than 100mesh, and analysis by waste process test method showed that all criteria were satisfied.

[Table 5]

In the case of Samgwang Mine, the concentrations of Cd, Cu, Pb, Zn, etc. were increased in fine grains, and the As component showed the highest concentration in grains of more than 325 mesh. . All hazardous components except Cu were found to exceed the standards of concern and countermeasures. Similarly to the soil pollution test method, the waste process test was found to have a high concentration of + 325mesh products and other components in the microparticles for arsenic.

Table 6

As a result of analysis by soil pollution test method for the product before the magnetic screening process of the present invention (the tailings passed through the wet cyclone and the specific gravity screening process), 8.89wt.% Was calculated as heavy minerals and the concentration of harmful heavy metal was (As) 59, cadmium (Cd) 0.7, copper (Cu) 214, lead (Pb) 70, and 59 ppm of zinc (Zn) were shown. As a hard mineral, 91.11wt.% Was calculated, and the concentrations of harmful heavy metals were arsenic (As) 49, cadmium (Cd) 0.4, copper (Cu) 58, lead (Pb) 34, and zinc (Zn) 112 ppm. The separation efficiency was relatively good. In the case of heavy minerals, the Cu and As components exceeded the standard of concern by the soil pollution process test method, whereas only the As component of the hard minerals exceeded the standard of concern.

As a result of calculating the removal rate of harmful heavy metals separated into heavy minerals, As 10.56, Cd 14.57, Cu 26.47, Pb 16.66, Zn 13.02% was shown, and it was confirmed that the Cu and Pb components were selected by specific gravity selection.

Gold (Au) and silver (Ag) analyzes were performed on the recovered heavy minerals.

As a result of analyzing the separated product by the soil contamination process test method by applying the magnetic screening process for the light minerals separated and selected in the specific gravity screening process, it was 10.13wt.% As a magnetic product and 89.87wt.% As a non-magnetic product. Was calculated. Harmful content of magnetic products is arsenic (As) 51, cadmium (Cd) 0.4, copper (Cu) 75, lead (Pb) 44, zinc (Zn) 208 ppm, nonmagnetic products are As 26, Cd 0.2, Cu 23 Arsenic (As) 18.20%, cadmium (Cd) 17.32%, copper (Cu) 26.81%, lead (Pb) 24.71%, zinc (Zn) 25.69% The removal efficiency of the iron-containing mineral containing heavy metal components was very good.

However, both the magnetic and non-magnetic products were found to have exceeded the As component in the soil pollution process test method.

As a result of analyzing gold (Au) and silver (Ag) of magnetic products, it was found that 0.1 ppm or less was contained.

When the characteristics of the separated product were applied by applying the flotation process (product passed through the table sorter 13) to the non-magnetic product separated and screened in the magnetic screening process, 1.08wt.% Of sulfide mineral was calculated. Assay analysis showed that the arsenic (As) content was 203 ppm, the removal rate was 10.27%, the cadmium (Cd) content was 1.2 ppm, the removal rate was 3.88%, and the copper (Cu) content was 746 ppm, the removal rate was 45.41%, and lead ( Pb) had a content of 235 ppm, a removal rate of 15.49%, and zinc (Zn) having a content of 364 ppm and a removal rate of 9.83%, and it was confirmed that the screening efficiency of As, Cu, and Pb components was very good.

As a result of flotation, the sulfide minerals showed the Cu and As components as countermeasures, while the Pb and Zn components exceeded the standard of concern, whereas the non-sulphide minerals had all components below the standard.

As a result of gold (Au) and silver (Ag) analysis of sulfide minerals, it was analyzed that 1.0 ppm of gold and 12 ppm of silver were contained.

As a result of soil contamination process test analysis on the separated granulated and fine products by applying a four-stage classification process to the non-sulfurized minerals separated and selected in the flotation process, 5.42wt.% Was obtained as the fine product (O / F). Arsenic (As) content 174 ppm, removal rate 24.83%, cadmium (Cd) content 0.5 ppm, removal rate 22.44%, copper (Cu) content 135 ppm, removal rate 52.90%, lead (Pb) content 51 ppm , Removal rate 27.99%, zinc (Zn) content 174 ppm, removal rate 35.10%, it was confirmed that the screening efficiency of all harmful heavy metals is very good.

The classification process was applied to unsulfated minerals with 19 ppm of As concentration. The concentrations of particulate and granulated products were analyzed to be increased, which exceeded the standard of preparation for particulates and the standard of concern for granulated products. It is judged to be an error. As a result of applying the present invention to the unique mineral mineral residue, 20.77wt.% As a heavy mineral, a magnetic mineral, a sulfide mineral, and a fine mineral having a very high heavy metal content, and 79.23wt.% As a purified soil having a low heavy metal content were calculated. The concentrations of heavy metals contained in the pests were Cd 1.1, Cu 270, Pb 116, Zn 285, As 133 ppm, and Cd 0.3, Cu 7, Pb 8, Zn 18, As 30 ppm were detected in the purified soil. It was.

Although the data of Samgwang mine differed from the only mine, all items were found to meet the criteria.

1: hopper, 2: screw
3: transfer conveyor, 4: trommel screen
5: first concentration regulator, 6: wet cyclone
7: distributor, 8: spiral gravity separator
9: light mineral recovery tank, 10: second concentration regulator
11: Magnetic sorter, 12: Magnetic recovery tank
13: table selector, 14: product set
15: sorting machine, 16: dehydrator,

Claims (4)

A housing having an inlet and an outlet, and a screw installed to rotate in place by using a driving motor as a driving source, and a feeder (2) for supplying a predetermined amount of tailings of the metal mine introduced from the hopper; ;
The tailings are fed by the feeder 2 and at the same time water is supplied from the water tank 17, and the tailings: water is supplied in a weight ratio of 1: 2 to 3, and the foreign matter including the tree roots contained in the tailings is subjected to specific gravity. A trommel screen 4 for sorting;
A first concentration regulator (5) for supplying the trommel screen with tailings and water from which foreign substances have been removed and adjusting the concentration of the mineral liquid to 15 to 40% by weight;
A wet cyclone (6) for selecting the tailings whose concentration is controlled through the first concentration regulator into fine particles and granulated products having different particle sizes through a cyclone method to guide the fine products to a chemical treatment facility or a waste plant;
A distributor (7) for distributing the granulated product selected by the wet cyclone;
A plurality of spiral specific gravity separators for sorting the granulated products distributed by the distributor into heavy minerals and hard minerals having different weights and transporting the hard minerals to be stored;
A second concentration controller (10) for adjusting the concentration of the mineral liquid of the heavy mineral tailings selected by the spiral specific gravity separator to 15 to 40% by weight;
A magnetic separator for magnetically selecting magnetic materials contained in the tailings whose concentration is controlled by the second concentration controller;
A table for linear reciprocating motion by a drive motor, and a water distribution device for injecting water into the table in a direction perpendicular to the reciprocating direction of the table. Table sorter 13 for sorting light and heavy minerals by the reciprocating motion of the table and the direction and specific gravity and weight of water by the water distribution device to supply harmless hard minerals to the product and to induce harmful heavy minerals. Wow;
A tank having a bottom inclined upward toward one side and a transfer screw installed inclined in the tank, wherein the classifier 15 sorts the foreign matters selected by the table sorter through the transfer screw;
The waste tailings harmless physical treatment device, characterized in that it comprises a dehydrator (16) for dewatering the heavy minerals selected by the classifier (15).
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