CN103937977A - Comprehensive recovery process of arsenic/antimony-containing gold concentrate - Google Patents
Comprehensive recovery process of arsenic/antimony-containing gold concentrate Download PDFInfo
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- CN103937977A CN103937977A CN201410173003.5A CN201410173003A CN103937977A CN 103937977 A CN103937977 A CN 103937977A CN 201410173003 A CN201410173003 A CN 201410173003A CN 103937977 A CN103937977 A CN 103937977A
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- arsenic
- leaching
- antimony
- gold concentrate
- recycling process
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a comprehensive recovery process of arsenic/antimony-containing gold concentrate. The comprehensive recovery process comprises the following steps: blending the arsenic/antimony-containing gold concentrate with water to obtain pulp, adding a leaching agent to the pulp to perform alkaline leaching in advance, and reducing the alkaline leachate by using a reducing agent to recover antimony; washing the leaching residue and carrying out a two-stage calcining process on the washed leaching residue so as to recover arsenic and sulfur, wherein the calcination temperature of the first-stage calcining process ranges from 550 DEG C to 600 DEG C so that the arsenic in the ores is oxidized into As2O3 and the arsenic is recovered through a wet process, and the calcination temperature of the second-stage calcining process is 650 DEG C so that sulfur in the ores is oxidized into SO2 and the sulfur is recovered through an acid making process; performing acid leaching-washing process on the calcination slag, grinding the ores, and then carrying out cyanidation leaching to recovery gold. The process has the major advantage of high recovery rate: the recovery rate of the antimony is more than 65%, and the recovery rate of gold is more than 80%.
Description
Technical field
The present invention relates to a kind of gold ore recovery process.
Background technology
Gansu province is refractory gold ore containing arsenic antimony Gold Ore.Ore Minerals composition is complicated, contain quite a lot of golden interfering factors of carrying, gold is contaminated among pyrite and mispickel, white antimony and is formed adhesion and parcel with superfine particle form, adopts after roasting preoxidation desulfurization, carbon, arsenic, and the impurity such as arsenic, antimony still leach and have considerable influence gold.White antimony is easy to be decomposed to form Sb2O3 and SO2, the Sb2O3 forming is easily particle aggregation during to q.s in roasting siege, sometimes be also called " clinkering ", the oxide compound of antimony easily forms oxide film and stops prussiate to affect golden leaching near golden surface in golden leaching process.In addition, active antimony can form alloy with precious metal, and this alloy is insoluble to cyanide solution, causes gold leaching rate to reduce, and therefore eliminating antimony is necessary on the impact of gold leaching.
For the leaching yield how improving containing gold after the roasting of arsenic antimony gold concentrate, research is both at home and abroad few, and how existing research leaches Sb2O3 and eliminate the disadvantageous effect that gold is leached in calcining if mainly concentrating on, and effect is unsatisfactory.Along with the exploitation to difficult-treating gold mine resource, further investigate the recycling of this class containing arsenic antimony Gold Ore, the development that gold is produced and raising Business Economic Benefit are significant.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defect, provide the rate of recovery of antimony, arsenic, gold high containing arsenic antimony gold concentrate comprehensive recycling process.
Object of the present invention is carried out specific implementation by the following technical programs:
A kind of containing arsenic antimony gold concentrate comprehensive recycling process, comprise the steps:
A kind of containing arsenic antimony gold concentrate comprehensive recycling process, comprise the steps:
1) first will be containing the arsenic antimony gold concentrate furnishing ore pulp that adds water, ore pulp adds leaching agent alkaline leaching in advance, and alkaline leaching liquid reclaims antimony after reductive agent reduction;
2) the laggard two-stage roasting technique of passing through of leached mud washing reclaims arsenic and sulphur, and one section of maturing temperature 550-600 DEG C, makes the arsenic in mineral be oxidized to As
2o
3, reclaiming by wet arsenic, 650 DEG C of two-stage calcination temperature, make the sulphur in mineral be oxidized to SO
2, reclaim by acid-making process;
3) fired slags is after acidleach-washing, then ore grinding, after Cyanide Leaching, reclaims gold.
Further, the reduced liquid forming after reduction in described step 1) returns to alkaline leaching device and serves as leach liquor and recycle.
Preferably, the leaching agent in described step 1) is Na
2s.The consumption of described leaching agent is 21kg/ ton ore deposit.
Preferably, the reductive agent in described step 1) is H
2sO
4.The consumption of described reductive agent is 10kg/ ton ore deposit.
Further, described step 2) in, one section of roasting and two-stage calcination all adopt that instantaneous to be warmed up to 650 DEG C, insulation roasting time be 12min.
Preferably, in described step 1), the concentration of sizing mixing is 70%; Leaching concentration 70%; Leach naoh concentration 20g/l in ore pulp; Sodium sulphite concentration 50g/l in ore pulp.
In order to further illustrate the essence of technique of the present invention, applicant has carried out commerical test on the basis in laboratory, and has obtained expected effect, and experimental result is as follows:
。
Soak the pre-treatment rate of recovery containing antimony ore without alkali:
（54.2-19.15）/54.2×100%=64.67%
Contain antimony ore rate of recovery after alkali soaks pre-treatment:
（51.6-7.35）/51.6×100%=85.76%
Improve on year-on-year basis containing antimony ore rate of recovery after alkali soaks pre-treatment:
85.76%-64.67%=21.09%
Reach 80.5% containing antimony liquid through the comprehensive recovery of air catalytic oxidation antimony
Beneficial effect of the present invention:
The present invention is directed to containing arsenic antimony gold concentrate and adopt leaching agent alkaline leaching in advance, after leached mud washing, carry out calcination process, reclaim arsenic and sulphur, fired slags is after acidleach-washing, then ore grinding, after Cyanide Leaching, reclaims gold.Alkaline leaching liquid reclaims antimony after reductive agent reduction, and reduced liquid returns to alkaline leaching system, thereby reaches the object of comprehensive recovery of gold, antimony, arsenic, sulphur, realizes the comprehensive utilization of resource.Wherein, alkaline preconditioning technique is removed antimony before concentrate enters baking cyaniding, has improved gold recovery, has reduced sodium cyanide consumption, and atmospheric oxidation law technology reclaims the antimony in circulation fluid, and cost simple to operate is low.The maximum advantage of technique of the present invention is that the rate of recovery is high, and antimony recovery reaches more than 65%, and the rate of recovery of gold reaches more than 80%.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
embodiment 1:
For raw material be early cunette gold ore of sky, the Minxian County sky stored up of stock ground, Gansu, higher arsenic, antimony are contained in this ore deposit.
Application the present invention contains arsenic antimony gold concentrate comprehensive utilization technique:
1) first will be containing the arsenic antimony gold concentrate furnishing ore pulp that adds water, ore pulp adds leaching agent alkaline leaching in advance, and alkaline leaching liquid reclaims antimony after reductive agent reduction, and the reduced liquid forming after reduction returns to alkaline leaching device and serves as leach liquor and recycle;
2) the laggard two-stage roasting technique of passing through of leached mud washing reclaims arsenic and sulphur, 650 DEG C of one section of maturing temperatures, insulation 12min, make the arsenic in mineral be oxidized to As2O3, reclaim 650 DEG C of two-stage calcination temperature, insulation 12min by wet arsenic, make the sulphur in mineral be oxidized to SO2, reclaim by acid-making process;
3) fired slags is after acidleach-washing, then ore grinding, after Cyanide Leaching, reclaims gold.
In described step 1),
Leaching agent is Na2S, and the consumption of described leaching agent is 21kg/ ton ore deposit;
Reductive agent is H2SO4, and the consumption of described reductive agent is 10kg/ ton ore deposit;
The concentration of sizing mixing is 70%; Leaching concentration 70%; Leach naoh concentration 20g/l in ore pulp; Sodium sulphite concentration 50g/l in ore pulp.
Application is containing after arsenic antimony gold concentrate comprehensive utilization technique, and the rate of recovery of gold has improved 21.09% on year-on-year basis than not carrying out pre-treatment, stores up concentrate amount calculate recyclable gold 25.308Kg according to stock ground, produces 160 tons of sodium pyroantimoniates.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. containing an arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: comprise the steps:
1) first will be containing the arsenic antimony gold concentrate furnishing ore pulp that adds water, ore pulp adds leaching agent alkaline leaching in advance, and alkaline leaching liquid reclaims antimony after reductive agent reduction;
2) the laggard two-stage roasting technique of passing through of leached mud washing reclaims arsenic and sulphur, and one section of maturing temperature 550-600 DEG C, makes the arsenic in mineral be oxidized to As
2o
3, reclaiming by wet arsenic, 650 DEG C of two-stage calcination temperature, make the sulphur in mineral be oxidized to SO
2, reclaim by acid-making process;
3) fired slags is after acidleach-washing, then ore grinding, after Cyanide Leaching, reclaims gold.
2. according to claim 1 containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: the reduced liquid forming after reduction in described step 1) returns to alkaline leaching device and serves as leach liquor and recycle.
3. according to claim 1 containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: the leaching agent in described step 1) is Na
2s.
According to described in claim 1-3 any one containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: the consumption of described leaching agent is 21kg/ ton ore deposit.
5. according to claim 1 containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: the reductive agent in described step 1) is H
2sO
4.
According to described in claim 1 or 2 or 5 containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: the consumption of described reductive agent is 10kg/ ton ore deposit.
7. according to claim 1 containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: described step 2) in, one section of roasting and two-stage calcination all adopt that instantaneous to be warmed up to 650 DEG C, insulation roasting time be 12min.
According to described in claim 1-3 any one containing arsenic antimony gold concentrate comprehensive recycling process, it is characterized in that: in described step 1), the concentration of sizing mixing is 70%; Leaching concentration 70%; Leach naoh concentration 20g/l in ore pulp; Sodium sulphite concentration 50g/l in ore pulp.
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| CN201410173003.5A CN103937977A (en) | 2014-04-28 | 2014-04-28 | Comprehensive recovery process of arsenic/antimony-containing gold concentrate |
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| CN201410173003.5A CN103937977A (en) | 2014-04-28 | 2014-04-28 | Comprehensive recovery process of arsenic/antimony-containing gold concentrate |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278154A (en) * | 2014-09-30 | 2015-01-14 | 北京矿冶研究总院 | Method for pretreating antimony-containing gold concentrate |
| CN104741242A (en) * | 2015-03-24 | 2015-07-01 | 新疆星塔矿业有限公司 | Floatation reagent used for separating gold from antimony |
| CN106480319A (en) * | 2016-10-26 | 2017-03-08 | 山东国大黄金股份有限公司 | A kind of method of the immersion cleaning treatment hydrogen containing tail gas synthetical recovery antimony of alkali containing antimony |
| CN107326179A (en) * | 2017-05-23 | 2017-11-07 | 西北矿冶研究院 | Method for recovering polymetallic from complex antimony-containing gold ore |
| CN107541607A (en) * | 2016-06-28 | 2018-01-05 | 中国科学院过程工程研究所 | A kind of method of high-Arsen gold ore two-stage roasting conversion processing cyanide gold-leaching |
| CN107815554A (en) * | 2017-09-30 | 2018-03-20 | 紫金矿业集团股份有限公司 | The gold extracting method of high antimony golden ore concentrate hard to treat containing arsenic |
| CN108220616A (en) * | 2018-02-09 | 2018-06-29 | 西安建筑科技大学 | A kind of method for improving Au-Ag leaching rate in difficult tellurides type gold floatation concentrate |
| CN108285984A (en) * | 2017-12-20 | 2018-07-17 | 甘肃招金贵金属冶炼有限公司 | A method of improving the rate of recovery of cyaniding containing antimony gold concentrate |
| CN110306066A (en) * | 2019-07-22 | 2019-10-08 | 山东国大黄金股份有限公司 | A kind of multistage gold extracting method of the difficult tailing of gold containing arsenic |
| CN111057865A (en) * | 2020-01-06 | 2020-04-24 | 烟台市金奥环保科技有限公司 | Method for recovering gold and silver from high-arsenic gold concentrate |
| CN111154975A (en) * | 2020-02-14 | 2020-05-15 | 中国恩菲工程技术有限公司 | Method for treating arsenic-antimony-containing gold-carrying material |
| CN113621827A (en) * | 2021-08-24 | 2021-11-09 | 昆明理工大学 | Method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore |
| CN114231738A (en) * | 2021-11-09 | 2022-03-25 | 长春黄金研究院有限公司 | Combined method for dressing and smelting polysulfide micro-fine particle dyeing type gold-bearing ore |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278154A (en) * | 2014-09-30 | 2015-01-14 | 北京矿冶研究总院 | Method for pretreating antimony-containing gold concentrate |
| CN104741242A (en) * | 2015-03-24 | 2015-07-01 | 新疆星塔矿业有限公司 | Floatation reagent used for separating gold from antimony |
| CN107541607A (en) * | 2016-06-28 | 2018-01-05 | 中国科学院过程工程研究所 | A kind of method of high-Arsen gold ore two-stage roasting conversion processing cyanide gold-leaching |
| CN106480319A (en) * | 2016-10-26 | 2017-03-08 | 山东国大黄金股份有限公司 | A kind of method of the immersion cleaning treatment hydrogen containing tail gas synthetical recovery antimony of alkali containing antimony |
| CN107326179B (en) * | 2017-05-23 | 2019-12-27 | 西北矿冶研究院 | Method for recovering polymetallic from complex antimony-containing gold ore |
| CN107326179A (en) * | 2017-05-23 | 2017-11-07 | 西北矿冶研究院 | Method for recovering polymetallic from complex antimony-containing gold ore |
| CN107815554A (en) * | 2017-09-30 | 2018-03-20 | 紫金矿业集团股份有限公司 | The gold extracting method of high antimony golden ore concentrate hard to treat containing arsenic |
| CN108285984A (en) * | 2017-12-20 | 2018-07-17 | 甘肃招金贵金属冶炼有限公司 | A method of improving the rate of recovery of cyaniding containing antimony gold concentrate |
| CN108220616B (en) * | 2018-02-09 | 2020-10-09 | 西安建筑科技大学 | Method for improving gold and silver leaching rate of refractory telluride type flotation gold concentrate |
| CN108220616A (en) * | 2018-02-09 | 2018-06-29 | 西安建筑科技大学 | A kind of method for improving Au-Ag leaching rate in difficult tellurides type gold floatation concentrate |
| CN110306066A (en) * | 2019-07-22 | 2019-10-08 | 山东国大黄金股份有限公司 | A kind of multistage gold extracting method of the difficult tailing of gold containing arsenic |
| CN110306066B (en) * | 2019-07-22 | 2021-07-20 | 山东国大黄金股份有限公司 | Multistage gold extraction method for refractory arsenic-containing gold tailings |
| CN111057865A (en) * | 2020-01-06 | 2020-04-24 | 烟台市金奥环保科技有限公司 | Method for recovering gold and silver from high-arsenic gold concentrate |
| CN111154975A (en) * | 2020-02-14 | 2020-05-15 | 中国恩菲工程技术有限公司 | Method for treating arsenic-antimony-containing gold-carrying material |
| CN111154975B (en) * | 2020-02-14 | 2022-02-08 | 中国恩菲工程技术有限公司 | Method for treating arsenic-antimony-containing gold-carrying material |
| CN113621827A (en) * | 2021-08-24 | 2021-11-09 | 昆明理工大学 | Method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore |
| CN114231738A (en) * | 2021-11-09 | 2022-03-25 | 长春黄金研究院有限公司 | Combined method for dressing and smelting polysulfide micro-fine particle dyeing type gold-bearing ore |
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