CN102430482B - Method for comprehensively recycling copper, gold and silver from liquid obtained after copper separation of tailings subjected to cyaniding for gold extraction - Google Patents
Method for comprehensively recycling copper, gold and silver from liquid obtained after copper separation of tailings subjected to cyaniding for gold extraction Download PDFInfo
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- CN102430482B CN102430482B CN 201110446318 CN201110446318A CN102430482B CN 102430482 B CN102430482 B CN 102430482B CN 201110446318 CN201110446318 CN 201110446318 CN 201110446318 A CN201110446318 A CN 201110446318A CN 102430482 B CN102430482 B CN 102430482B
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Abstract
The invention relates to a method for comprehensively recycling copper, gold and silver from liquid obtained after copper separation of tailings subjected to cyaniding for gold extraction, belonging to the technical field of treatment of waste liquid obtained by floatation of lead-copper concentration in gold smelting and chemical engineering industries. The method comprises the following steps of: (1) performing floatation to get lead concentrate; (2) performing floatation to get copper concentrate; (3) acidifying liquid after copper separation; and (4) adsorbing filtrate after acidification. According to the method disclosed by the invention, the gold, the silver and the copper can be effectively extracted, the comprehensive utilization efficiency of resources is improved and the pollution to an ambient environment is reduced.
Description
Technical field
The present invention relates to a kind of after cyanidation gold-extracted tailings selects copper the method for Recovering Copper gold and silver the liquid, belong to gold smelting and chemical industry flotation of lead copper concentrate liquid waste disposal technique field.
Background technology
In recent years, in the gold smelting industry, adopt flotation to obtain lead concentrate, copper concentrate to direct Cyanided gold tailings, realize comprehensively reclaiming, what wherein obtain during flotation concentrates selects liquid gold, silver behind the copper, copper content respectively at 0.1-0.2g/m
3, 0.5-0.8 g/m
3, 0.4-0.6 g/l because discharge capacity is large, thereby be worth larger very necessary to selecting the comprehensive recovery of liquid gold, silver and bronze behind the copper, at present, also do not occur a kind ofly effectively reclaiming the gold, silver in the liquid, the method for copper behind the copper selected.
Summary of the invention
The object of the invention is to solve the weak point that above-mentioned prior art exists, provide a kind of and can effectively extract gold, silver and bronze, improve comprehensive utilization of resources efficient, reduce the method for Recovering Copper gold and silver the liquid after cyanidation gold-extracted tailings selects copper to the pollution of surrounding environment.
The present invention is achieved through the following technical solutions:
A kind of after cyanidation gold-extracted tailings selects copper the method for Recovering Copper gold and silver the liquid, its special character is may further comprise the steps:
1, flotation obtains lead concentrate
Cyanidation gold-extracted tailings is dropped in the flotation device, add water, obtain the ore pulp that concentration is 30-35%, then add pulverized limestone in ore pulp, the PH of ore pulp is adjusted to 9.5-11.5, the diethyldithiocarbamate that adds again 0.008-0.012% in the ore pulp is made collecting agent, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selectedly obtains lead concentrate and select plumbous mine tailing, the leaded 40-48% of lead concentrate, argentiferous 0.1-0.15% select plumbous mine tailing cupric 0.5-0.8%;
2, flotation concentrates
The plumbous mine tailing of choosing that step 1 flotation is obtained drops in the flotation device, add water, obtain the ore pulp that concentration is 30-35%, then add concentration in the ore pulp and be 98% the concentrated sulfuric acid, the PH of ore pulp is adjusted to 5.5-6.5, the butyl xanthate that adds 0.008-0.012% in the ore pulp is again made collecting agent, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, closed circuit selected, the press filtration of secondary obtain copper concentrate and select copper after liquid, copper concentrate cupric 10-20%, argentiferous 0.02-0.03%, copper concentrate return roasting system and join the ore deposit, select copper after liquid contain golden 0.25-0.29 g/m
3, argentiferous 0.43-0.75 g/m
3, cupric 0.50-0.56g/l, be for further processing;
3, select liquid acidifying behind the copper
Slowly add concentration behind the Xiang Xuantong in the liquid and be 98% the concentrated sulfuric acid, with selecting behind the copper pH value of liquid to adjust to 3-4, stirs filtration after 2-4 hour, get filtrate and filter cake, the filter cake copper content is 10-20%, filter cake is returned roasting system join the ore deposit, and filtrate contains golden 0.25-0.29 g/m
3, argentiferous 0.43-0.75 g/m
3
4, acidifying rear filtrate absorption
The filtrate of step 3 gained is pumped into the charcoal absorption system, through continuous circulation absorption, obtain containing the active gold-carrying carbon of golden 0.3-0.5%, argentiferous 0.5-0.8%, active gold-carrying carbon is carried out the desorb electrodeposition reclaim gold and silver.
A kind of method of selecting liquid Recovering Copper gold and silver behind the copper from cyanidation gold-extracted tailings of the present invention, gold recovery is at 96.00%-96.55%, the rate of recovery of silver is at 97.67-98.40%, the recovery of copper rate is at 96.43%-98.18%, can not only effectively reclaim gold and silver, improved comprehensive utilization of resources efficient and reduce greatly pollution to surrounding environment, finally improve the economic benefit of enterprise.
The specific embodiment
Below provide the specific embodiment of the present invention, be used for that the present invention is described further.
Embodiment 1
A kind of after cyanidation gold-extracted tailings selects copper the method for Recovering Copper gold and silver the liquid, may further comprise the steps
1, flotation obtains lead concentrate
In cyanidation gold-extracted tailings, add water, adjusting pulp density is 30%, adjust ore pulp PH=9.5 with pulverized limestone, make collecting agent with diethyldithiocarbamate, press 120g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, is plumbously obtained lead concentrate and selects plumbous mine tailing by enrichment, selects plumbous mine tailing to process separately, the leaded 40-48% of lead concentrate, argentiferous 0.1-0.15% select plumbous mine tailing cupric 0.5-0.8%;
2, flotation concentrates
The plumbous mine tailing of choosing that one step flotation is obtained adds water adjustment pulp density 30%, be that 98% the concentrated sulfuric acid is adjusted ore pulp PH=5.5 with concentration, make collecting agent with butyl xanthate, press 120g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, closed circuit selected, the press filtration of secondary obtain copper concentrate and select copper after liquid, copper concentrate cupric 10%, argentiferous 0.02%, copper concentrate return roasting system and join the ore deposit, select copper after liquid contain golden 0.25 g/m
3, argentiferous 0.43g/m
3, cupric 0.50g/l, be for further processing;
3, select liquid acidifying behind the copper
Be that 98% the concentrated sulfuric acid is transferred PH=3 with selecting liquid behind the copper slowly to add concentration, stirred 2 hours that filtration gets filtrate and filter cake, the filter cake copper content is 10%, filter cake is returned roasting system join the ore deposit, and filtrate contains golden 0.25g/m
3, argentiferous 0.43g/m
3
4, acidifying rear filtrate absorption
The filtrate of step 3 gained is pumped into the charcoal absorption system, through continuous circulation absorption, obtain active gold-carrying carbon, active gold-carrying carbon is carried out the desorb electrodeposition reclaim gold and silver;
5, active gold-carrying carbon desorb electrodeposition reclaims gold and silver
The active gold-carrying carbon ADSORPTION OF GOLD more renews carbon when a certain amount of, and active gold-carrying carbon carries out the desorb electrodeposition and reclaims gold and silver.
Table 1: embodiment 1 result of laboratory test and related data
Embodiment 2
A kind of after cyanidation gold-extracted tailings selects copper the method for Recovering Copper gold and silver the liquid, may further comprise the steps:
1, flotation obtains lead concentrate
Cyanidation gold-extracted tailings is adjusted pulp density 35%, adjust ore pulp PH=11.5 with lime, make collecting agent with diethyldithiocarbamate, press 80g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, lead is obtained lead concentrate and selects plumbous mine tailing by enrichment, leaded 48%, the argentiferous 0.15% of lead concentrate selects plumbous mine tailing cupric 0.8%, selects plumbous mine tailing to process separately;
2, flotation concentrates
The plumbous mine tailing of choosing that step 1 flotation is obtained adds water adjustment pulp density 35%, be that 98% the concentrated sulfuric acid is adjusted ore pulp PH=6.0 with concentration, make collecting agent with butyl xanthate, press 80g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, closed circuit selected, the press filtration of secondary obtain copper concentrate and select copper after liquid, copper concentrate cupric 20%, argentiferous 0.03%, copper concentrate return roasting system and join the ore deposit, select copper after liquid contain golden 0.28g/m
3, argentiferous 0.55g/m
3, cupric 0.55g/l, be for further processing;
3, select liquid acidifying behind the copper
Be that 98% the concentrated sulfuric acid is transferred PH=4 with selecting liquid behind the copper slowly to add concentration, stirred 3 hours that filtration gets filtrate and filter cake, the filter cake copper content is 20%, filter cake is returned roasting system join the ore deposit, and filtrate contains golden 0.28 g/m
3, argentiferous 0.55 g/m
3, cupric 0.01g/l;
4, acidifying rear filtrate absorption
Filtrate after acidification, filtration is pumped into the charcoal absorption system, obtain active gold-carrying carbon;
5, active gold-carrying carbon desorb electrodeposition reclaims gold and silver
The active gold-carrying carbon ADSORPTION OF GOLD more renews carbon when a certain amount of, and active gold-carrying carbon carries out the desorb electrodeposition and reclaims gold and silver.
Table 2: embodiment 2 results of laboratory test and related data
Embodiment 3
A kind of after cyanidation gold-extracted tailings selects copper the method for Recovering Copper gold and silver the liquid, may further comprise the steps
1, flotation obtains lead concentrate
Cyanidation gold-extracted tailings is adjusted pulp density 33%, adjust ore pulp PH=10.5 with pulverized limestone, make collecting agent with diethyldithiocarbamate, press 100g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selected, lead is obtained lead concentrate and selects plumbous mine tailing by enrichment, select plumbous mine tailing to process separately, leaded 45%, the argentiferous 0.13% of lead concentrate selects plumbous mine tailing cupric 0.7%;
2, flotation concentrates
The plumbous mine tailing of choosing that one step flotation is obtained adds water adjustment pulp density 33%, be that 98% the concentrated sulfuric acid is adjusted ore pulp PH=6.5 with concentration, make collecting agent with butyl xanthate, press 100g/t and add in the flotation device, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, closed circuit selected, the press filtration of secondary obtain copper concentrate and select copper after liquid, copper concentrate cupric 15%, argentiferous 0.025%, copper concentrate return roasting system and join the ore deposit, select copper after liquid contain golden 0.29 g/m
3, argentiferous 0.75 g/m
3, cupric 0.56g/l, be for further processing;
3, select liquid acidifying behind the copper
Liquid slowly adds sulfuric acid accent PH=3.5 after will selecting copper, stirs 4 hours, filters, and gets filtrate and filter cake, and the filter cake copper content is 15%, filter cake is returned roasting system join the ore deposit, and filtrate contains golden 0.29 g/m
3, argentiferous 0.75 g/m
3, cupric 0.02 g/l;
4, acidifying rear filtrate absorption
Filtrate after acidification, filtration is pumped into the charcoal absorption system, obtain active gold-carrying carbon;
5, active gold-carrying carbon desorb electrodeposition reclaims gold and silver
The active gold-carrying carbon ADSORPTION OF GOLD more renews carbon when a certain amount of, and active gold-carrying carbon carries out the desorb electrodeposition and reclaims gold and silver.
Table 3: embodiment 3 results of laboratory test and related data
A kind of method of selecting liquid Recovering Copper gold and silver behind the copper from cyanidation gold-extracted tailings of the present invention, gold recovery is at 96.00%-96.55%, the rate of recovery of silver is at 97.67-98.40%, the recovery of copper rate is at 96.43%-98.18%, can not only effectively reclaim gold and silver, improved comprehensive utilization of resources efficient and reduce greatly pollution to surrounding environment, finally improve the economic benefit of enterprise.
Claims (1)
1. method of Recovering Copper gold and silver the liquid after cyanidation gold-extracted tailings selects copper is characterized in that may further comprise the steps:
1), flotation obtains lead concentrate
Cyanidation gold-extracted tailings is dropped in the flotation device, add water, obtain the ore pulp that concentration is 30-35%, then add pulverized limestone in ore pulp, the PH of ore pulp is adjusted to 9.5-11.5, the diethyldithiocarbamate that adds again 0.008-0.012% in the ore pulp is made collecting agent, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, secondary is closed circuit selectedly obtains lead concentrate and select plumbous mine tailing, the leaded 40-48% of lead concentrate, argentiferous 0.1-0.15% select plumbous mine tailing cupric 0.5-0.8%;
2), flotation concentrates
The plumbous mine tailing of choosing that the step 1) flotation is obtained drops in the flotation device, add water, obtain the ore pulp that concentration is 30-35%, then add concentration in the ore pulp and be 98% the concentrated sulfuric acid, the PH of ore pulp is adjusted to 5.5-6.5, the butyl xanthate that adds 0.008-0.012% in the ore pulp is again made collecting agent, carry out closed circuit flotation, through one-level roughly select, secondary is closed circuitly scanned, closed circuit selected, the press filtration of secondary obtain copper concentrate and select copper after liquid, copper concentrate cupric 10-20%, argentiferous 0.02-0.03%, copper concentrate return roasting system and join the ore deposit, select copper after liquid contain golden 0.25-0.29 g/m
3, argentiferous 0.43-0.75 g/m
3, cupric 0.50-0.56g/l, be for further processing;
3), select liquid acidifying behind the copper
Slowly add concentration behind the Xiang Xuantong in the liquid and be 98% the concentrated sulfuric acid, with selecting behind the copper pH value of liquid to adjust to 3-4, stirs filtration after 2-4 hour, get filtrate and filter cake, the filter cake copper content is 10-20%, filter cake is returned roasting system join the ore deposit, and filtrate contains golden 0.25-0.29 g/m
3, argentiferous 0.43-0.75 g/m
3
4), acidifying rear filtrate absorption
The filtrate of step 3) gained is pumped into the charcoal absorption system, through continuous circulation absorption, obtain containing the active gold-carrying carbon of golden 0.3-0.5%, argentiferous 0.5-0.8%, active gold-carrying carbon is carried out the desorb electrodeposition reclaim gold and silver.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110446318 CN102430482B (en) | 2011-12-28 | 2011-12-28 | Method for comprehensively recycling copper, gold and silver from liquid obtained after copper separation of tailings subjected to cyaniding for gold extraction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110446318 CN102430482B (en) | 2011-12-28 | 2011-12-28 | Method for comprehensively recycling copper, gold and silver from liquid obtained after copper separation of tailings subjected to cyaniding for gold extraction |
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| CN102430482A CN102430482A (en) | 2012-05-02 |
| CN102430482B true CN102430482B (en) | 2013-04-17 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102784713B (en) * | 2012-07-18 | 2013-12-04 | 山东国大黄金股份有限公司 | Method for recycling multiple elements of liquid after cyanided tailing flotation |
| CN102787233A (en) * | 2012-07-18 | 2012-11-21 | 山东国大黄金股份有限公司 | Method for circulative and comprehensive utilization of waste acids generated in acid preparation process through smoke smelting |
| CN103276221A (en) * | 2013-05-13 | 2013-09-04 | 山东国大黄金股份有限公司 | Method for recovering copper from copper flotation system liquids of tailings after cyaniding gold extraction |
| CN103305696B (en) * | 2013-05-28 | 2014-10-29 | 山东国大黄金股份有限公司 | Method for treating alkaline gold-extraction tailings by utilizing acid making tail gas |
| CN103409632B (en) * | 2013-07-18 | 2016-01-13 | 山东国大黄金股份有限公司 | A kind of method of gold mud wet processing tail gas comprehensive reutilization |
| CN103555963A (en) * | 2013-10-31 | 2014-02-05 | 山东国大黄金股份有限公司 | Method for treating cyaniding gold extraction waste liquid to recover gold, silver and copper by use of acid making waste gas |
| CN104805295A (en) * | 2015-05-18 | 2015-07-29 | 张博文 | Process for recovering gold and silver from gold melting waste slag |
| CN104975184A (en) * | 2015-07-19 | 2015-10-14 | 长春黄金研究院 | Method for recovering gold and silver from picking waste liquid |
| CN108754535A (en) * | 2018-07-06 | 2018-11-06 | 拉萨品志工贸有限公司 | A kind of cupric tailing solution of leaching gold electro deposited copper new recovering technology |
| CN109536705B (en) * | 2018-12-26 | 2021-01-15 | 西安建筑科技大学 | Method for inhibiting cyanide dissolution of copper minerals in copper-containing gold ores difficult to treat |
| CN110551901B (en) * | 2019-10-18 | 2021-05-18 | 广西森合高新科技股份有限公司 | Method for recovering copper and lead from tail liquid and treatment method of leaching tail liquid generated by gold concentrate gold extraction process |
| CN115430516B (en) * | 2022-08-31 | 2023-06-16 | 云南黄金矿业集团股份有限公司 | Method for treating pyrite roasting slag water washing liquid containing gold, silver and copper |
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| CN102134641B (en) * | 2010-11-10 | 2013-03-20 | 紫金矿业集团股份有限公司 | Gold extraction process of gold concentrate with high carbon, arsenic and sulfur |
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