CN214347161U - Comprehensive recycling system for polymetallic gold mine smelting slag resources - Google Patents
Comprehensive recycling system for polymetallic gold mine smelting slag resources Download PDFInfo
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- CN214347161U CN214347161U CN202023313690.6U CN202023313690U CN214347161U CN 214347161 U CN214347161 U CN 214347161U CN 202023313690 U CN202023313690 U CN 202023313690U CN 214347161 U CN214347161 U CN 214347161U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to the technical field of mines, in particular to a comprehensive recycling system for polymetallic gold mine smelting slag resources, which comprises a grinding classification system, a table concentrator reselection system and a cyaniding leaching system; the grinding and grading system consists of a stock bin, a belt conveyor, a first-stage ball mill, a single-spiral classifier, two cyclones (one for one), a second-stage mill and two slurry pumps (one for one); the gravity table concentrator system consists of an ore pulp distributor, five gravity tables, a plate-and-frame filter press, a gold and silver concentrate I collector, a gold and silver concentrate II collector, a pump pool and a slurry pump; the cyaniding leaching system consists of an inclined plate type thickener, two cyaniding leaching tanks, a carbon extraction sieve, a safety sieve, a pump pool, a slurry pump and a leaching tank of a carbon slurry plant. The utility model discloses gold mine suitability is strong, easily realizes large-scale production, and gold silver rate of recovery is high (Au99.5%, Ag96.6%), synthesizes valuable metals such as gold, silver and copper in the recycle smelting slag.
Description
Technical Field
The utility model belongs to the technical field of the mine, concretely relates to polymetallic gold mine smelting slag resource comprehensive recycling system.
Background
At present, the domestic gold smelting slag treatment process comprises a fire method and a wet method, wherein the fire method comprises a copper and lead collecting smelting process and a chlorination process, and the wet method comprises a direct cyanidation leaching process. The domestic prior art has the following defects:
1. a smelting slag lead trapping smelting process. The method has the defects of large investment, high production and operation cost, and great occupational health, safety and environmental protection risks in operation, and is not suitable for large-scale production of gold mines.
2. A smelting process for capturing and smelting copper in smelting slag. The method has the defects of long process flow, large investment, high production and operation cost, and is not suitable for the gold mine dressing and smelting process by cooperating with copper smelting raw material ingredients for smelting production.
3. A cyaniding process of smelting slag. The method has the defects that large granular gold and silver alloy mechanically mixed in smelting slag cannot be effectively recovered, and the recovery rate of gold and silver is low.
4. A chlorination process. The problems that chloride ions corrode equipment greatly, the requirement on the performance of the equipment is high, the operation and maintenance cost of the equipment is high and the like are that the chlorination metallurgy cannot realize the pain point of large-scale process application in China, gold and silver are recovered aiming at gold smelting slag, and at present, a mature chlorination process system which operates stably does not exist in China; large granular gold-silver alloy mechanically mingled in the smelting slag can not be effectively recovered.
Disclosure of Invention
The invention provides a comprehensive and efficient recycling system suitable for multi-metal gold mine smelting slag resources, which aims at complex multi-metal gold mine smelting slag and overcomes the defects of the prior art. The valuable metals such as gold, silver, copper and the like in the smelting slag are efficiently and comprehensively recovered, the comprehensive recovery rate of gold and silver in the mine is improved, and economic benefits are created for gold mines.
The technical scheme of the invention is as follows: a comprehensive and efficient resource recycling system suitable for polymetallic gold mine smelting slag comprises a grinding classification system, a table concentrator reselection system and a cyaniding leaching system;
the grinding classification system is connected with the table concentrator reselection system and comprises a storage bin, a belt conveyor is arranged under the storage bin, the installation inclination angle of the belt conveyor is 23-25 degrees, the frequency conversion is adjustable, a conveyor discharge port is connected with a first-section ball mill feed port, a first-section mill outlet is connected with a spiral classifier, the other end of the spiral classifier is connected with a first-section ball mill feed port, the bottom of the spiral classifier is provided with a large-particle alloy outlet, an overflow ore pulp outlet of the spiral classifier is connected with a pump pool through a pipeline, the pump pool and a slurry pump are connected with a cyclone through a pipeline, the bottom of the cyclone is connected with a second-section ball mill through a conduit, the outlet of the second-section ball mill is connected with the pump pool through a conduit, and the overflow outlet of the cyclone is connected with an ore pulp distributor;
the table concentrator gravity concentration system is connected with the cyaniding leaching system, the ore pulp distributor is respectively connected to the feeding ports of five table concentrators through pipelines, the table concentrator collector is connected with the plate-and-frame filter press, the table concentrator collector is connected with the tailing pump pond, the outlet of the tailing pump pond and the tailing slurry pump are connected to the inclined plate thickener through pipelines, and the bottom outlet of the thickener is connected to the pulp inlet of the No. 1 leaching tank;
the pump pond of cyanide leaching system is connected with the cyanidation groove through the pipeline, and the ore pulp export of 1# leaching groove is connected through the pipe with the ore pulp feed inlet of 2# leaching groove, adds the active carbon in the 2# leaching groove, and the discharge gate of 2# leaching groove is connected with the safety sieve, and safety sieve liquid discharge gate is connected to in the cyanide pump pond, and the export of 1# leaching groove carbon extraction pipe is connected with carbon extraction sieve.
The utility model discloses a to compound many metals gold mine, in the production of gold purification smelting process, because this kind of mine is smelted with raw materials gold mud gold grade low (gold < 5%), harmful element content such as copper, iron, calcium, sulphur is high on the right side, when the gold mud pyrometallurgy reduction is smelted, the slag viscosity is big, high temperature metal liquid phase is poor with the slag dispersion coefficient, slag surface easily generates partial oxidation copper dross or matte layer, easily entrains gold and silver copper alloy granule in the slag, lead to smelting to produce the slag rate height (30% -40%), gold and silver is big in mechanical loss and chemical loss in the smelting slag, the smelting slag gold and silver grade is high on the right side (Au 200-500 g/t). The high-hardness smelting slag existing in the forms of silicate and ferrite mainly comprises silicon, iron, calcium, gold and silver elements, part of gold and silver in the slag exists in the form of granular alloy, and the smelting slag has high comprehensive resource recycling value.
Smelting slag is subjected to an ore grinding classification system to obtain a gold and silver concentrate I (large-particle alloy) product, classified overflow ore pulp enters a table concentrator reselection system to obtain a gold and silver concentrate II, the gold and silver concentrate I and the gold and silver concentrate II enter a purification smelting system to obtain alloy gold and silver, table concentrator reselection tailings enter a two-section cyaniding leaching system to obtain gold-carrying carbon, and the gold-carrying carbon is subjected to high-temperature high-pressure desorption electrolysis and purification smelting to obtain alloy gold and silver. The utility model discloses system equipment facility investment is little, and production running cost is low, and gold mine suitability is strong, easily realizes large-scale production, and gold silver rate of recovery is high (Au99.5%, Ag96.6%), synthesizes valuable metals such as gold, silver and copper in the recycle smelting slag, and the rate of recovery is synthesized in the ore deposit gold and silver selection metallurgy and is promoted, creates economic benefits for the gold mine.
The utility model discloses system equipment facility investment is little, and production running cost is low, and gold mine suitability is strong, easily realizes large-scale production, and gold silver rate of recovery is high (Au99.5%, Ag96.6%), synthesizes valuable metals such as gold, silver and copper in the recycle smelting slag, and the rate of recovery is synthesized in the ore deposit gold and silver selection metallurgy and is promoted, creates economic benefits for the gold mine.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of a mill grading system;
FIG. 3 is a schematic diagram of a shaker reselection system;
FIG. 4 is a schematic diagram of a cyanidation leaching system;
wherein, a grinding classification system, b desorption purification system, c cyaniding leaching system and d table gravity system;
1-a storage bin; 2-a belt conveyor; 3-first-stage ball mill; 4-spiral classifier; 5-pump pool I; 6-slurry pump I; 7-a swirler; 8-grading overflow guide pipe; 9-a two-stage ball mill; 10-a gold and silver concentrate I bin; 11-a pulp distributor; 12-16-shaking table; 17-a concentrate draft tube; 18-plate and frame filter press; 19-a gold and silver concentrate II bin; 20-a tailing draft tube; 21-tailing pump pond; 22-tailing slurry pump; 23-a tailing diversion pipe; 24-inclined plate type thickener; 25-1# leaching tank 1; 26-2# leaching tank 2; 27-a safety screen; 28-cyanide pump cell; 29-cyanidation slurry pump; 30-a tail stock conduit; 31-a carbon extraction sieve; 32-desorption purification system; 33-gold and silver concentrate I; 34-a purifying smelting system a; 35-gold and silver concentrate II; 36-purification smelting system b.
Detailed Description
Detailed description is made in accordance with the accompanying drawings, as shown in fig. 1 to 4: a comprehensive recycling system for polymetallic gold mine smelting slag resources comprises an ore grinding grading system a, a cyaniding leaching system c and a table concentrator reselection system d.
Grind ore grading system and shaking table gravity system are connected, belt conveyor 2 sets up under feed bin 1, belt conveyor installation inclination is 23 ~ 25, the frequency conversion is adjustable, 2 discharge gates of conveyer are connected with 3 feed inlets of one section ball mill, 3 export of one section mill are connected with spiral classifier 4, the 4 other ends of spiral classifier contact with 3 feed inlets of one section ball mill, the export of large granule alloy is established to spiral classifier 4 bottom, 4 overflow ore pulp exports of spiral classifier pass through the pipe connection with pump sump 5, pump sump 5 and sediment stuff pump 6 pass through the pipeline and are connected with the swirler, 7 bottoms of swirler pass through pipe connection to two-stage ball mill, 9 two-stage ball mill exports are connected with the pump sump through the pipe, 7 overflow exports of swirler are connected to ore pulp distributor 11.
The cyaniding leaching system of the shaking table gravity concentration system is connected, the ore pulp distributor 11 is respectively connected to the feeding ports of five shaking tables 12-16 through pipelines, the shaking table concentrate collector is connected with a plate-and-frame filter press 18, the shaking table tailing collector is connected with a pump pool 21, the outlet of the tailing pump pool 21 and a tailing slurry pump 22 are connected to an inclined plate type thickener 24 through pipelines, and the outlet at the bottom of the thickener 24 is connected with the slurry inlet of a No. 1 cyaniding tank.
The pump pond of cyanide leaching system is connected with the mine own carbon pulp factory cyanidation groove through the pipeline, and the ore pulp export of 1# leaching tank 25 is connected through the pipe with the ore pulp feed inlet of 2# leaching tank 26, and the discharge gate of 2# leaching tank 26 is connected with safety sieve 27, and safety sieve 27 filters cyaniding liquid, and safety sieve 27 liquid discharge gate is connected to in cyaniding pump pond 28, and 1# leaching tank 25 carries the export of charcoal pipe and is connected with carrying charcoal sieve 31. The spiral classifier is obliquely arranged downwards, and the pipeline is a stainless steel pipe.
A comprehensive recycling system for gold smelting slag resources operates according to the following steps:
the pyrometallurgical slag produced in gold mine production operation is crushed to specified fineness by a jaw crusher and then transferred to a bin 1 of an ore grinding and grading system for storage, the crushed metallurgical slag is conveyed to a section of ball mill 3 by a belt conveyor 2, meanwhile, quantitative clear water is added, the specified ore grinding fineness is controlled to enable large-particle gold-silver alloy and gangue to be dissociated, ore pulp of the section of ball mill enters a spiral classifier 4, and the large-particle gold-silver alloy forms gravity settling in the spiral classifier to obtain gold-silver concentrate I;
the sand return of the spiral classifier and the bottom of the cyclone flow into a two-stage ball mill 9 for grinding, the specified grinding fineness is controlled, two-stage ground ore pulp is conveyed to a cyclone 7 for classification through a pump pool 5 and a slurry pump 6, qualified classification overflows into an ore pulp distributor 11, the ore pulp enters five shaking tables 12-16 for reselection, the ore pulp amount of each shaking table is distributed by the ore pulp distributor 11 according to the specification, and the shaking tables reselect to obtain gold and silver concentrate II;
the gold and silver concentrate II is reselected by a table concentrator and enters a plate-and-frame filter press 18 for filtration and dehydration, the gold and silver concentrate II is stored in a storage bin 19, the gold and silver concentrate I and the gold and silver concentrate II are transported to a purification smelting system 34 or 36, and the gold and silver concentrate I and the gold and silver concentrate II are treated by processes of smelting and bead splashing, nitric acid separation, hydrochloric acid reduction, iron powder replacement, smelting and ingot casting and the like to obtain the alloy gold and silver;
the tailings are reselected by a table concentrator and enter a thickener 24, the bottom of the thickener flows into a No. 1 leaching tank 25, the middle part of a No. 2 leaching tank 26 extends into an adsorption tube, a pump is arranged on the adsorption tube, and the other end of the adsorption tube in the leaching tank extends into the No. 1 leaching tank 25; an adsorption pipe is extended into the No. 1 leaching tank 25, a pump is arranged on the adsorption pipe, the pump is connected with a carbon extraction sieve 31 through a carbon extraction pipe, gold-loaded carbon is obtained after gold-silver cyaniding leaching and active carbon adsorption operation, the gold-loaded carbon is filtered by the carbon extraction sieve and then is conveyed to a desorption purification system 32, and filtrate enters the No. 1 leaching tank 25; the gold-loaded carbon is transported to a desorption purification system 32 for refining, and the alloy gold and the silver are obtained after the processes of desorption, nitric acid separation, hydrochloric acid reduction, iron powder replacement, ingot smelting and the like.
And (4) conveying the cyanided tail slurry to a carbon slurry cyaniding tank owned by the mine through a tail slurry guide pipe, and performing two-stage cyaniding leaching to recover gold and silver.
Claims (4)
1. A comprehensive recycling system of polymetallic gold mine smelting slag resources, which is characterized in that,
comprises a grinding classification system, a table concentrator reselection system and a cyaniding leaching system;
the ore grinding classification system is connected with the table concentrator reselection system, the ore grinding classification system comprises a bin, a belt conveyor is arranged under the bin, a conveyor discharge port is connected with a first-stage ball mill feed port, a first-stage mill outlet is connected with a spiral classifier, the other end of the spiral classifier is connected with the first-stage ball mill feed port, a large-particle alloy outlet is arranged at the bottom of the spiral classifier, an overflow ore pulp outlet of the spiral classifier is connected with a pump pool through a pipeline, the pump pool and a slurry pump are connected with a cyclone through pipelines, the bottom of the cyclone is connected with a second-stage ball mill through a conduit, an outlet of the second-stage ball mill is connected with the pump pool through a conduit, and an overflow outlet of the cyclone is connected with an ore pulp distributor;
the table concentrator gravity concentration system is connected with the cyaniding leaching system, the ore pulp distributor is respectively connected to the feeding ports of five table concentrators through pipelines, the table concentrator collector is connected with the plate-and-frame filter press, the table concentrator collector is connected with the tailing pump pond, the outlet of the tailing pump pond and the tailing slurry pump are connected to the inclined plate thickener through pipelines, and the bottom outlet of the thickener is connected to the pulp inlet of the No. 1 leaching tank;
the pump pond of cyanide leaching system is connected with the cyanidation groove through the pipeline, and the ore pulp export of 1# leaching groove is connected through the pipe with the ore pulp feed inlet of 2# leaching groove, adds the active carbon in the 2# leaching groove, and the discharge gate of 2# leaching groove is connected with the safety sieve, and safety sieve liquid discharge gate is connected to in the cyanide pump pond, and the export of 1# leaching groove carbon extraction pipe is connected with carbon extraction sieve.
2. The comprehensive recycling system of claim 1, wherein the belt conveyor is installed at an inclination angle of 23-25 ° and is variable in frequency.
3. The integrated recycling system according to claim 1, wherein the spiral classifier is disposed obliquely downward.
4. The integrated recycling system according to claim 1, wherein the pipe is a stainless steel pipe.
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| CN202023313690.6U CN214347161U (en) | 2020-12-31 | 2020-12-31 | Comprehensive recycling system for polymetallic gold mine smelting slag resources |
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| CN202023313690.6U CN214347161U (en) | 2020-12-31 | 2020-12-31 | Comprehensive recycling system for polymetallic gold mine smelting slag resources |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602639A (en) * | 2022-03-02 | 2022-06-10 | 常秀芹 | Silver-lead concentrate processing grader |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602639A (en) * | 2022-03-02 | 2022-06-10 | 常秀芹 | Silver-lead concentrate processing grader |
| CN114602639B (en) * | 2022-03-02 | 2023-08-25 | 湖南省江永县银铅锌矿 | Silver lead concentrate processing grader |
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