CN102191375A - Technology for recycling gold and silver through direct flotation under high Zn<2+> concentration of zinc hydrometallurgy acid leaching pulp - Google Patents

Technology for recycling gold and silver through direct flotation under high Zn<2+> concentration of zinc hydrometallurgy acid leaching pulp Download PDF

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Publication number
CN102191375A
CN102191375A CN2011101121635A CN201110112163A CN102191375A CN 102191375 A CN102191375 A CN 102191375A CN 2011101121635 A CN2011101121635 A CN 2011101121635A CN 201110112163 A CN201110112163 A CN 201110112163A CN 102191375 A CN102191375 A CN 102191375A
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CN
China
Prior art keywords
flotation
ore pulp
concentration
acid leaching
zinc
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Pending
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CN2011101121635A
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Chinese (zh)
Inventor
黄万抚
郭天立
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Huludao Zinc Industry Co ltd
Jiangxi University of Science and Technology
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Huludao Zinc Industry Co ltd
Jiangxi University of Science and Technology
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Application filed by Huludao Zinc Industry Co ltd, Jiangxi University of Science and Technology filed Critical Huludao Zinc Industry Co ltd
Priority to CN2011101121635A priority Critical patent/CN102191375A/en
Publication of CN102191375A publication Critical patent/CN102191375A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention provides a technology for recycling gold and silver through direct flotation under high Zn<2+> concentration of zinc hydrometallurgy acid leaching pulp. The technology comprises the following steps: zinc concentrate used as a raw material is roasted, neutral leaching is performed to the roasted zinc concentrate, acid leaching is performed on the neutral concentrated pulp, flotation is performed on the acid leaching pulp, and the flotation tailing is filtered, dried and fumed. The method is suitable for the recyclings of gold and silver in the acid leaching pulp of which Zn<2+> concentration is 120-150g/l, the recyclings of gold and silver in copper hydrometallurgy acid leaching high-temperature pulp and the flotation recyclings of gold and silver in various of zinc hydrometallurgy acid leaching pulp of which Zn<2+> concentration is 120-150g/l.

Description

The high Zn of zinc hydrometallurgy acid leaching ore pulp 2+Direct flotation reclaims gold and silver technology under the concentration
Technical field
That the present invention proposes is the high Zn of zinc hydrometallurgy acid leaching ore pulp in hydrometallurgy field 2+Direct flotation reclaims gold and silver technology under the concentration.
Background technology
Hydrometallurgy is the topmost non-ferrous metal metallurgy method in the world today, and wherein the output of zinc hydrometallurgy accounts for more than 85% of the total zinc output in the world.At present, the zinc hydrometallurgy process is: zinc ore concentrate directly leaches or leaches after roasting, reclaims non-ferrous metals such as copper, zinc then from immersion liquid, and ore pulp soaks slag through dehydrating to discharge, and noble metals such as gold and silver partly or entirely enter to soak and do not obtain in the slag reclaiming.Because pickling liquor contains the zinc concentration height, zinc ion concentration is greater than 100g/L, under this condition, because the interference of zine ion causes conventional floatation process to be difficult to efficient recovery gold and silver-colored from this solution usually.
Summary of the invention
At the problem that prior art exists, the present invention proposes high Zn in a kind of hydrometallurgy 2+Direct flotation reclaims gold and silver technology under the concentration conditions.This method solves and reclaim the technical problem that obtains gold and silver from acid leaching ore pulp by with the acid leaching ore pulp direct flotation.
The scheme that technical solution problem of the present invention is adopted is:
1, zinc ore concentrate roasting: zinc ore concentrate is added in the stoving oven, carry out roasting, obtain zinc baking sand;
2, roasted ore is neutral leaches: zinc baking sand is joined in the leaching vat, add diluted acid and leach, obtain neutral leach liquor and the neutral ore pulp that concentrates;
3, the neutral ore pulp acidity that concentrates leaches: add acid in the concentrated ore pulp that the neutrality leaching is obtained, carry out the acidity leaching, obtain acid ore pulp;
4, acid flotation of ore pulp: in acid leaching ore pulp, add flotation reagent, put into then and carry out flotation in the flotation unit, the gradation multiple spot adds flotation reagent again in floatation process, by flotation, in flotation concentrate, obtain the gold and silver metallic element, obtain flotation tailings simultaneously;
5, flotation tailings filtration, dry, fuming: flotation tailings is filtered after drying, dried flotation tailings is carried out fuming, the flue dust that fuming process produced is recycled, and the fuming slag is discarded.
Flotation reagent is for adjusting agent, collecting agent and pore forming material.
Method of the present invention is applicable to that gold and silver reclaims in zinc ion concentration 120 ~ 150g/l ore pulp, as the recovery of gold and silver in the zinc hydrometallurgy acid leaching ore pulp; The recovery of gold and silver in the wet type copper smelting acidleach high temperature ore pulp; And the floatation recovery of gold and silver in other various hydrometallurgy zinc ion concentration 120 ~ 150g/l ore pulps.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
Among the figure, 1. zinc ore concentrate roasting, the 2. neutral leaching of roasted ore, the 3. neutral ore pulp acidity that concentrates leaches, 4. acid leaching ore pulp flotation, 5. flotation tailings filtration, dry, fuming.
Embodiment
According to the figure, the operation process that is adopted is:
1, zinc ore concentrate roasting: zinc ore concentrate added carry out roasting in the stoving oven, obtain zinc baking sand;
2, roasted ore is neutral leaches: zinc baking sand is joined in the leaching vat, add diluted acid and leach, obtain neutral leach liquor and the neutral ore pulp that concentrates;
3, the neutral ore pulp acidity that concentrates leaches: add acid in the concentrated ore pulp that the neutrality leaching is obtained, carry out the acidity leaching, obtain acid ore pulp, zinc concentration 120 ~ 150g/L;
4, acid flotation of ore pulp: in acid leaching ore pulp, add flotation reagent, put into then and carry out flotation in the flotation unit, the gradation multiple spot adds flotation reagent again in floatation process, by flotation, in flotation concentrate, obtain the gold and silver metallic element, obtain flotation tailings simultaneously;
5, flotation tailings filtration, dry, fuming: flotation tailings is filtered after drying, dried flotation tailings is carried out fuming, the flue dust that fuming process produced is recycled, and the fuming slag is discarded.
Flotation reagent is for adjusting agent, collecting agent and pore forming material.
Wherein:
The adjustment agent is: zinc oxide, sodium sulphite, yellow soda ash, anhydrous sodium metasilicate, water glass, among dodecyl sulphate ammonia and the CMC one or more.
Collecting agent is: xanthogenate and thiophosphoric acid salt mixture.
Pore forming material is: turps or ether alcohol class medicament.
The total addition level of adjusting agent adds by acid leaching residue dry measure 50-10000g per ton, and the total addition level of collecting agent adds by acid leaching residue dry measure 50g per ton-1000g, and the total addition level of pore forming material adds by acid leaching residue dry measure 50-1000g per ton.
When employing comprised the composite collector of two kinds of compositions, as butyl xanthate and butylamine black powder, mass ratio was pressed 0:1~1:1~1:0 and is cooperated.
Carry out before ore pulp enters flotation first that the dose that adds of adding medicine accounts for 45%~65% of total dosage, the gradation multiple spot adds the surplus medicament again in the floatation process.
Embodiment 1
Enter Zn in the pulp slurry of flotation 2+Argentiferous 133.5g/L, golden 0.115g/L in concentration 138g/L, the solid slag carry out the floatation recovery of gold and silver.
Treating processes is:
1. add an amount of water glass and dodecyl sulphate ammonia in the agitation vat before ore pulp enters floatation process, adopt butyl xanthate to mix as collecting agent by 2:1 with the butylamine black powder, pore forming material adopts turps.
2. adopt the layout new technology of dosing of many places, promptly add to mix at agitation vat and each setting of flotation respectively and adjust agent, collecting agent and pore forming material, consumption is respectively and adjusts agent 500g/t, collecting agent 100g/t, pore forming material 60g/t in the agitation vat; Sweep one and adjust agent 300g/t, collecting agent 40g/t, pore forming material 20g/t; Sweep two and do not add the adjustment agent, collecting agent 30g/t, pore forming material 10g/t; Sweep three and adjust agent 20g/t, collecting agent 20g/t, pore forming material 5g/t; The single-minded collecting agent that do not add is adjusted agent 100g/t, pore forming material 20g/t; Smart two do not add collecting agent, adjust agent 50g/t, pore forming material 10g/t, and smart three do not add adjustment agent and collecting agent, pore forming material 5g/t.
3. in whole floatation process collecting agent all by butyl xanthate: butylamine black powder 2:1 mixes.
The gold and silver flotation results sees Table 1.
The floatation recovery result of table 1 gold and silver
Embodiment 2
Enter Zn in the pulp slurry of flotation 2+Silver-colored 270g/t, golden 0.24g/t in concentration 126g/L, the solid slag carry out the floatation recovery of gold and silver.
Treating processes is:
1. add in the agitation vat before ore pulp enters floatation process and adjust agent CMC and water glass, Isobutylxanthic acid mixes as collecting agent by 0.7:1 with the 25# black powder, and pore forming material adopts turps.
2. adopt the layout new technology of dosing of many places, promptly add to mix at agitation vat and each setting of flotation respectively and adjust agent, collecting agent and pore forming material, consumption is respectively and adjusts agent 600g/t, collecting agent 160g/t, pore forming material 60g/t in the agitation vat; Sweep one and adjust agent 300g/t, collecting agent 60g/t, pore forming material 30g/t; Sweep two and adjust agent 100g/t, collecting agent 30g/t, pore forming material 10g/t; Sweep three and do not add the adjustment agent, collecting agent 10g/t, pore forming material 5g/t; The single-minded collecting agent that do not add is adjusted agent 200g/t, pore forming material 30g/t; Smart two do not add adjustment agent and collecting agent, pore forming material 10g/t, and smart three do not add adjustment agent and collecting agent, pore forming material 5g/t.
3. collecting agent all mixes by 0.7:1 with the 25# black powder by Isobutylxanthic acid in whole floatation process.
Flotation results sees Table 2.
Table 2 floatation recovery of gold and silver result
Embodiment 3
Enter Zn in the pulp slurry of flotation 2+Argentiferous 200g/t, golden 0.134 g/t in concentration 143g/L, the solid slag.
Treating processes is:
1. add in the agitation vat before ore pulp enters floatation process and adjust agent yellow soda ash adjustment pH to 4~5, add dodecyl sulphate ammonia again, butyl xanthate mixes as collecting agent by 1:2 with the butylamine black powder, and pore forming material adopts methyl isobutyl carbinol.
2. adopt the layout new technology of dosing of many places, promptly add hybrid collector and pore forming material at agitation vat and each setting of flotation respectively, consumption is respectively and adjusts agent 860g/t, collecting agent 150g/t, pore forming material 65g/t in the agitation vat; Sweep one and adjust agent 500g/t, collecting agent 43g/t, pore forming material 20g/t; Sweep two and do not add the adjustment agent, collecting agent 20g/t, pore forming material 10g/t; Sweep three and do not add the adjustment agent, collecting agent 10g/t, pore forming material 5g/t; Single-minded adjustment agent 300g/t, collecting agent 5g/t, pore forming material 5g/t; Smart two do not add adjustment agent and collecting agent, pore forming material 5g/t, and smart three do not add adjustment agent and collecting agent, pore forming material 5g/t.
3. collecting agent all mixes by 1:2 with the butylamine black powder by butyl xanthate in whole floatation process.
Flotation results sees Table 3
Table 3 floatation recovery of gold and silver result
Method of the present invention can reclaim valuable and useful metallic elements from the zinc baking sand acid leaching ore pulp, avoided the waste of resource, has improved the recovery utilization rate of Mineral resources.

Claims (9)

1. the high Zn of zinc hydrometallurgy acid leaching ore pulp 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that:
1), zinc ore concentrate roasting: zinc ore concentrate is added in the stoving oven, carry out roasting, obtain zinc baking sand;
2), roasted ore is neutral leaches: zinc baking sand is joined in the leaching vat, add diluted acid and leach, obtain neutral leach liquor and the neutral ore pulp that concentrates;
3), neutrality concentrates the leaching of ore pulp acidity: leach adding acid in the concentrated ore pulp that is obtained in neutrality, carry out acidity leaching and concentrated, obtain acid ore pulp, the zinc concentration 120 ~ 150g/L in the acid ore pulp;
4), acid flotation of ore pulp: in acid leaching ore pulp, add flotation reagent, put into then and carry out flotation in the flotation unit, the gradation multiple spot adds flotation reagent again in floatation process, by flotation, in flotation concentrate, obtain the gold and silver metallic element, obtain flotation tailings simultaneously;
5), flotation tailings filtration, dry, fuming: flotation tailings is filtered after drying, dried flotation tailings is carried out fuming, the flue dust that fuming process produced is recycled, and the fuming slag is discarded.
2. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: adjusting agent is: zinc oxide, sodium sulphite, yellow soda ash, anhydrous sodium metasilicate, water glass, among dodecyl sulphate ammonia and the CMC one or more.
3. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, and it is characterized in that: collecting agent is: xanthogenate and thiophosphoric acid salt mixture.
4. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, and it is characterized in that: pore forming material is: turps or ether alcohol class medicament.
5. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: the total addition level of adjusting agent adds by acid leaching residue dry measure 50-10000g per ton.
6. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: the total addition level of collecting agent adds by acid leaching residue dry measure 50g per ton-1000g.
7. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: the total addition level of pore forming material adds by acid leaching residue dry measure 50-1000g per ton.
8. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: carry out before ore pulp enters flotation first that the dose that adds of adding medicine accounts for 45%~65% of total dosage, the gradation multiple spot adds the surplus medicament again in the floatation process.
9. the high Zn of zinc hydrometallurgy acid leaching ore pulp according to claim 1 2+Direct flotation reclaims gold and silver technology under the concentration, it is characterized in that: when employing comprised the composite collector of two kinds of compositions, butyl xanthate and butylamine black powder, mass ratio were pressed 0:1~1:1~1:0 and are cooperated.
CN2011101121635A 2011-05-03 2011-05-03 Technology for recycling gold and silver through direct flotation under high Zn<2+> concentration of zinc hydrometallurgy acid leaching pulp Pending CN102191375A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102899499A (en) * 2012-09-28 2013-01-30 湖南水口山有色金属集团有限公司 Process and device for recovering noble metals of zinc smelting acid leaching residues
CN103272703A (en) * 2013-06-28 2013-09-04 葫芦岛锌业股份有限公司 Method for conducting roughing on silver in electrolytic zinc leaching residue by utilizing vertical flotation machine
CN103286008A (en) * 2013-05-13 2013-09-11 湖南水口山有色金属集团有限公司 Method for increasing silver recovery rate of flotation silver concentrates by using sulfuric acid as regulator
CN105478244A (en) * 2015-12-31 2016-04-13 郴州丰越环保科技有限公司 Efficient silver flotation method
CN105803191A (en) * 2016-04-29 2016-07-27 昆明理工大学 Zinc and iron separation method in zinc hydrometallurgy process
CN106244801A (en) * 2016-08-01 2016-12-21 江苏省冶金设计院有限公司 Process the method and system of zinc leaching residue

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829635A (en) * 2010-04-01 2010-09-15 江西理工大学 Process for reclaiming gold and silver by floatation from acid leaching ore pulp in wet zinc smelting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829635A (en) * 2010-04-01 2010-09-15 江西理工大学 Process for reclaiming gold and silver by floatation from acid leaching ore pulp in wet zinc smelting

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102899499A (en) * 2012-09-28 2013-01-30 湖南水口山有色金属集团有限公司 Process and device for recovering noble metals of zinc smelting acid leaching residues
CN103286008A (en) * 2013-05-13 2013-09-11 湖南水口山有色金属集团有限公司 Method for increasing silver recovery rate of flotation silver concentrates by using sulfuric acid as regulator
CN103286008B (en) * 2013-05-13 2015-11-18 湖南水口山有色金属集团有限公司 Sulfuric acid is adopted to adjust the method for silver raising recovery rate in agent raising flotation of silver concentrate
CN103272703A (en) * 2013-06-28 2013-09-04 葫芦岛锌业股份有限公司 Method for conducting roughing on silver in electrolytic zinc leaching residue by utilizing vertical flotation machine
CN105478244A (en) * 2015-12-31 2016-04-13 郴州丰越环保科技有限公司 Efficient silver flotation method
CN105803191A (en) * 2016-04-29 2016-07-27 昆明理工大学 Zinc and iron separation method in zinc hydrometallurgy process
CN106244801A (en) * 2016-08-01 2016-12-21 江苏省冶金设计院有限公司 Process the method and system of zinc leaching residue

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