Comprehensive recovery process of silver, lead, zinc and sulfur-containing bulk concentrate

A technology of mixing concentrate and zinc-sulfur, which is applied in the field of metallurgy, can solve the problems of low recovery rate of comprehensive utilization of resources, serious mutual inclusion of concentrate products, and inability to achieve high-efficiency separation, so as to reduce the dosage of chemicals and avoid metal loss , Increase the effect of monomer dissociation degree

Inactive Publication Date: 2021-03-05
YUNNAN CHIHONG ZINC & GERMANIUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the mixed concentrate is separated by flotation, due to the large amount of reagents left in the mixed flotation, when the lead, zinc, silver and sulfur are separated, the final concentrate product contains serious mutual content, and the effect of efficient separation cannot be achieved.
In the past, a large number of scholars' studies have shown that the floatability of lead sulfide, zinc sulfide and pyrite is not much different. Therefore, there is an urgent need for efficient separation inhibitors to solve the problem of low recovery rate of comprehensive utilization of resources in production.

Method used

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  • Comprehensive recovery process of silver, lead, zinc and sulfur-containing bulk concentrate
  • Comprehensive recovery process of silver, lead, zinc and sulfur-containing bulk concentrate
  • Comprehensive recovery process of silver, lead, zinc and sulfur-containing bulk concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A concentrator in Huize, Yunnan, contains 10.67% lead, 7.89% zinc, and 32.59% iron. The main metal minerals are galena, sphalerite and pyrite, accompanied by 91 grams / ton of silver. Xanthate obtained the silver-lead-zinc-sulfur mixed concentrate, and the above-mentioned ore sample was processed through the following process steps:

[0061] A. Drug removal: Concentrate the mixed concentrate containing silver, lead, zinc and sulfur to a concentration of 60-65%, and remove dixanthate. Add 6000 g / ton of sphalerite inhibitor and pyrite inhibitor lime, and then feed it into the ball mill for grinding, scrubbing, and drug removal;

[0062] B. Lead-zinc-sulfur separation flotation: Add 50 g / ton of lead-silver collector to the finely ground pulp, and feed it into the flotation machine for two-stage roughing, two-stage sweeping, and three-stage selected lead -Zinc-sulfur separation flotation. The first-stage lead-zinc-sulfur roughing foam (material h) and material l are combine...

Embodiment 2

[0068] A dressing plant in Lancang, Yunnan, containing 3.88% lead, 6.16% zinc, 15.09% iron, and 43 g / t silver. The main metal minerals are sphalerite, galena and pyrite, and the embedded particle size is relatively coarse , the buoyancy is very good, the above-mentioned ore sample is processed through the following process steps:

[0069] A. Drug removal: Concentrate the mixed concentrate containing silver, lead, zinc and sulfur to a concentration of 65-70%, add 8000 g / t of sphalerite inhibitor zinc sulfate and pyrite inhibitor, and then feed it into a ball mill for grinding Scrub off medicine;

[0070] B. Lead-zinc-sulfur separation flotation: Add 60 g / ton of lead-silver collector isopropyl xanthate to the ground pulp, and feed it into the flotation machine for two-stage roughing, two-stage sweeping and three-stage selection The lead-zinc sulfur separation flotation. The first-stage lead-zinc-sulfur roughing concentrate (material h) and material l are combined for the secon...

Embodiment 3

[0077] A dressing plant in Lancang, Yunnan, containing 3.88% lead, 6.16% zinc, 15.09% iron, and 43 g / t silver. The main metal minerals are sphalerite, galena and pyrite, and the embedded particle size is relatively coarse , the buoyancy is very good, the above-mentioned ore sample is processed through the following process steps:

[0078] A. Drug removal: Concentrate the mixed concentrate containing silver, lead, zinc and sulfur to a concentration of 65-70%, add 6000 g / t of sphalerite mixed inhibitor and 2000 g / t of pyrite mixed inhibitor, and then feed it into the ball mill , carry out grinding, scrubbing, and drug removal (the sphalerite mixed inhibitor described in this embodiment and the following examples all refers to the small molecule organic matter containing amino and dimethyl, zinc sulfate and zinc carbonate mixed inhibitor (2:6 : 3), described pyrite mixed inhibitor all refers to thiosulfate derivative, thioglycolic acid and sodium hydroxide mixed inhibitor (6:3:3)...

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Abstract

The invention discloses a comprehensive recovery process of silver, lead, zinc and sulfur-containing bulk concentrate. The specific process comprises the following steps of: concentrating the silver,lead, zinc and sulfur-containing bulk concentrate serving as a raw material until the solid content percentage concentration is 60-70% to obtain a material a; adding a sphalerite inhibitor and a pyrite inhibitor into the material a, and carrying out ore grinding, scrubbing and reagent removal to obtain a material b; adding a lead-silver collecting agent into the material b, performing lead-zinc sulfur separation flotation including two-stage roughing, two-stage scavenging and three-stage concentration to obtain lead concentrate c and a two-stage lead-zinc sulfur scavenging material d; and adding a pyrite inhibitor and a sphalerite activating agent into the two-stage lead-zinc sulfur scavenging material d, fully stirring for 3-5 minutes to obtain a material e, adding a sphalerite collectingagent into the material e, and performing zinc-sulfur separation flotation including one-stage roughing, two-stage scavenging and two-stage concentration to obtain zinc concentrate f and sulfur concentrate g. Through optimization and improvement of a flotation process and effective use of an inhibitor, loss of silver minerals is effectively avoided, and high separation performance of lead, zinc and iron is achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a comprehensive recovery process of silver-containing lead-zinc-sulfur mixed concentrate. Background technique [0002] Lead-zinc-silver metal is an irreplaceable heavy metal (among which silver is a precious metal) in the current industrial development process. It is widely used in my country's light industry and heavy industry, and is an indispensable important material for national economic development. With the development of world industry, the demand for lead and zinc metals in countries around the world is increasing. China has the largest and most complete manufacturing industry in the world, so its lead and zinc industry plays a pivotal role in the world industry. Although my country's lead-zinc industry has a relatively large production capacity, the level of sorting and processing of existing lead-zinc mines is relatively insufficient compared with many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/08B03D101/02B03D101/06B03D103/02
CPCB03D1/025B03D1/08B03D2201/02B03D2201/06B03D2203/02
Inventor 梁溢强杨林毛明发阚塞琼王胜开宋涛武鲁庆马原琳常伟华邓文王明飞
Owner YUNNAN CHIHONG ZINC & GERMANIUM
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