CN104831315A - New technology for recovering antimony from antimony-containing gold concentrate - Google Patents

New technology for recovering antimony from antimony-containing gold concentrate Download PDF

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Publication number
CN104831315A
CN104831315A CN201510148856.8A CN201510148856A CN104831315A CN 104831315 A CN104831315 A CN 104831315A CN 201510148856 A CN201510148856 A CN 201510148856A CN 104831315 A CN104831315 A CN 104831315A
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China
Prior art keywords
antimony
electrodeposition
gold concentrate
press filtration
filter
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Pending
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CN201510148856.8A
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Chinese (zh)
Inventor
李秀臣
秦洪训
王云
路良山
沈述保
王彩霞
刘朋
张立征
孙留根
桑胜华
孙英翔
戚兴传
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Zhaojin Mining Industry Co Ltd
Beijing General Research Institute of Mining and Metallurgy
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Zhaojin Mining Industry Co Ltd
Beijing General Research Institute of Mining and Metallurgy
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Priority to CN201510148856.8A priority Critical patent/CN104831315A/en
Publication of CN104831315A publication Critical patent/CN104831315A/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 relates to a new technology for recovering antimony from antimony-containing gold concentrate. The technology comprises the steps of pulping, leaching, press filtration washing, electrodeposition and waste liquid treatment. The technology overcomes restriction of electrodeposition of traditional wet antimony making technologies on a high antimony raw material through high concentration leaching and antimony-containing liquid circulating enrichment, solves the restriction of traditional smeltery roasting-cyaniding technologies on the antimony-containing gold concentrate raw material, and guarantees the technology stability and continuity through adopting a high efficiency device and technologic link technologic index control.

Description

A kind of novel process containing reclaiming antimony in antimony gold concentrate
Technical field
The present invention relates to a kind of for containing the pretreated novel process of antimony gold concentrate, belong to field of metallurgy and chemical engineering.
Background technology
Antimony (Sb) is a kind of silvery white friable metal; a kind of acid-proof substances at normal temperatures; it is a kind of broad-spectrum metal, is described as " fire extinguishing fp person who has rendered outstanding service ", " strategy metal ", " metallic hard agent ", " protective material of fluorescent tube, electron tube ".
At present, in gold smelting enterprise production process, antimony is a kind of harmful element, and this element exists not only affects quality product to roasting, affects Cyanide Leaching index, reduces Au, Ag rate of recovery.And the production method of existing metallic antimony, pyrogenic process and the large class of wet method two, antimony pyrometallurgical smelting method can be divided into mainly contain precipitation melting and roast-reduction melting, the defect mainly SO of antimony pyrometallurgical smelting 2seriously polluted, administer difficulty, the rate of recovery is low, in smelting process, because returning charge is many, causes the direct yield of metal and the rate of recovery all not satisfactory, and the technico-economical comparison that impact is smelted greatly have impact on the economic benefit of enterprise.
And also there is a lot of problem in existing antimony hydrometallurgy method: 1) in sodium sulphite leaching-thioantimonious acid sodium solution electrodeposition method, the accumulation of sodium sulfate, Sulfothiorine, S-WAT and schlippe's salt is serious, greatly and more numerous and diverse, current efficiency is low, and power consumption is high for liquid waste disposal amount; 2) hydrogen reduction method of Sodium thioantimonite leach liquor is feasible technically, but this method exists, and reduction rate is slow, antimony method bonding reacts the problems such as tube wall; 3) FeCl 3in leaching-electrodeposition method, solution impurity accumulating rate is very fast, and costly and loss is very fast, electrodeposition control condition is harsh for anion-exchange membrane; As, Au separation difficulty in leached mud, production cost is high; 4) the water diluting soln that chloride-hydrolysis processing requirement is a large amount of, acid consumption is high, water consumption is large, reagent consumption is large, and antimony recovery is low, and wastewater discharge is large.
Summary of the invention
The object of this invention is to provide a kind of efficient golden antimony separating technology containing antimony gold concentrate, while raising gold recovery, reclaim antimony element, the features such as this technique possesses stable working simultaneously, operability is high, labour intensity is low, economic benefits.
The technical scheme that the present invention solves the problems of the technologies described above is as follows:
Containing the novel process reclaiming antimony in antimony gold concentrate, comprise the steps:
(1) pulp: will be placed in surge tank in proportion and size mixing containing antimony gold concentrate, water, electrodeposition lean solution, control concentration of sizing mixing is 55 ~ 60wt%, so that when lower step adds catholyte, sodium sulfide solution, sodium hydroxide solution in leaching, be convenient to control to leach pulp density.
(2) leach: the ore pulp in step (1) surge tank extremely leaches the airtight stirred leaching tank in workshop by pump delivery, add the catholyte that electrodeposition workshop returns wherein and pulp density is adjusted to 50wt%, following current afterwards enters in leaching vat and leaches, in leaching vat, add Na 2s and NaOH solution, keep Na in ore pulp 2s concentration is 50g/L, NaOH concentration is 20g/L;
(3) press filtration washing: the slurries after having leached in step (2) are from flowing into medial launder, ore slurry pump is sent into two high-efficient diaphragm pressure filter and is carried out a press filtration by medial launder pump, the filtrate adding secondary press filtration according to the ratio of ore pulp and washings volume ratio 2:1 is washed, gained filter cake is pumped into secondary pressure filter washing and filter pressing after sizing mixing, washing water are the new water that the ratio being 2:1 according to ore pulp and water volume ratio adds, filter cake send baking cyaniding workshop to extract gold and silver, a filtrate pumping press filtration reuse after sizing mixing;
(4) electrodeposition: enter electrodeposition workshop as electrodeposition mother liquor after the filtrate essence filter in step (3) after a press filtration, adopt diaphragm electrodeposition to improve electrodeposition efficiency, electrical integration two sections carries out, adopt carbon steel cathodes plate and carbon steel palisade positive plate, without the need to adding extra ionogen, antimony is separated out at negative electrode, manually beats exhaustion of yin pole antimony, washes away electrodeposition solution on negative electrode antimony and soluble salt with hot water;
(5) liquid waste disposal: the lean solution part after the electrodeposition in step (4) is used for sizing mixing, another part enters acidifying groove, use sulfuric acid to be adjusted to pH=1, filter the antimony sulfide precipitation produced in acidization, filtrate enters effluent treatment plant reuse after treatment.
The invention has the beneficial effects as follows: leach by high density, overcome the restriction of conventional wet stibium smelting technology electrodeposition to high antimony raw material containing antimony liquid circulation collection, solve traditional smeltery roasting-cyanidation technology to the restriction containing antimony gold concentrate raw material, simultaneously stability and the continuity of this technique by adopting high-efficiency appliance, process procedure technical indicator to control ensure that technique.
Leaching mechanism of the present invention is as follows:
Alkaline leaching has the features such as selectivity good and separable gold and silver, lead, copper, zinc, is applicable to process many metals antimony sulfide ore, and the antimony sulfide in concentrate and weisspiessglanz are easily and Na 2s reacts, and generates water-soluble cpds Sodium thioantimonite (Na 3sbS 3), react as follows:
Sb 2S 3+3Na 2S=2Na 3SbS 3
Sb 2O 3+6Na 2S+3H 20=2Na 3SbS 3+6NaOH;
Work as Na 2during S quantity not sufficient, NaOH also can rise and dissolve Sb 2s 3effect, react and be:
Sb 2S 3+6NaOH=3Na 2S+2H 3SbO 3
Electrowinning principle: SbS occurs at negative electrode 3 3-be reduced into the reaction of metal
SbS 3 3-+3e→Sb+3S 2-
The reaction generating oxygen and water is there is at anode:
4OH 4e→2H 20+O 2
Total reaction is:
2Na 3SbS 3+6NaOH=2Sb+6Na 2S+3H 20+3/2O 2
On the basis of technique scheme, the present invention can also do following improvement.
Further, in described step (2), extraction time is 1-3 hour.
The beneficial effect of above-mentioned further scheme is adopted to be ensure the leaching completely of antimony element.
Further, described in step (4), electric effusion antimony content is for being greater than 50g/L, and electrodeposition flow is 10.5m/h.
Further, in step (4), one section of electrodeposition current density controls at 9000A/ ㎡, and two sections of electrodeposition current densities control at 4500A/ ㎡.
Accompanying drawing explanation
Fig. 1 is present invention process schema;
Embodiment
Be described principle of the present invention and feature below in conjunction with example, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Containing the novel process reclaiming antimony in antimony gold concentrate, comprise the steps:
(1) pulp: get 10kg and be placed in surge tank size mixing containing antimony gold concentrate, 4L water, 4L electrodeposition lean solution;
(2) leach: the ore pulp in step (1) surge tank extremely leaches the airtight stirred leaching tank in workshop by pump delivery, add the catholyte that 1L electrodeposition workshop returns wherein, following current afterwards enters in leaching vat and leaches, and adds the Na of 800ml 15wt% in leaching vat 2the NaOH solution of S solution and 200ml 20wt%, keeps Na in ore pulp by potentiometric determination sodium sulfide content and determination of acid-basetitration sodium hydrate content 2s concentration is 50g/L, NaOH concentration is 20g/L, leaches 2 hours;
(3) press filtration washing: the slurries after having leached in step (2) are from flowing into medial launder, ore slurry pump is sent into two high-efficient diaphragm pressure filter and is carried out a press filtration by medial launder pump, the filtrate adding secondary press filtration according to the ratio of ore pulp and washings volume ratio 2:1 is washed, gained filter cake is pumped into secondary pressure filter washing and filter pressing after sizing mixing, washing water are the new water that the ratio being 2:1 according to ore pulp and water volume ratio adds, filter cake send baking cyaniding workshop to extract gold and silver, a filtrate pumping press filtration reuse after sizing mixing;
(4) electrodeposition: enter electrodeposition workshop as electrodeposition mother liquor after the filtrate essence filter in step (3) after a press filtration, adopt diaphragm electrodeposition to improve electrodeposition efficiency, electrical integration two sections carries out, adopt carbon steel cathodes plate, electric effusion antimony content is for being greater than 50g/L, electrodeposition flow is 10.5m/h, one section of electrodeposition current density controls at 9000A/ ㎡, two sections of electrodeposition current densities control at 4500A/ ㎡, antimony is separated out at negative electrode, manually beat exhaustion of yin pole antimony, wash away electric effusion on negative electrode antimony and soluble salt with hot water;
(5) liquid waste disposal: the lean solution part after the electrodeposition in step (4) is used for sizing mixing, another part enters acidifying groove, use sulfuric acid to be adjusted to pH=1, filter the antimony sulfide precipitation produced in acidization, filtrate enters effluent treatment plant reuse after treatment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in invention.

Claims (4)

1., containing the novel process reclaiming antimony in antimony gold concentrate, comprise the steps:
(1) pulp: by containing antimony gold concentrate, water, to be placed in surge tank in proportion from the electrodeposition lean solution of electrodeposition room and to size mixing, the concentration that controls to size mixing is 55 ~ 60wt%;
(2) leach: the ore pulp in step (1) surge tank extremely leaches the airtight stirred leaching tank in workshop by pump delivery, add the catholyte that electrodeposition workshop returns wherein and pulp density is adjusted to 50wt%, following current afterwards enters in leaching vat and leaches, in leaching vat, add Na 2s and NaOH solution, keep Na in ore pulp 2s concentration is 50g/L, NaOH concentration is 20g/L;
(3) press filtration washing: the slurries after having leached in step (2) are from flowing into medial launder, ore slurry pump is sent into two high-efficient diaphragm pressure filter and is carried out a press filtration by medial launder pump, the filtrate adding secondary press filtration according to the ratio of ore pulp and washings volume ratio 2:1 is washed, gained filter cake is pumped into secondary pressure filter washing and filter pressing after sizing mixing, washing water are the new water that the ratio being 2:1 according to ore pulp and water volume ratio adds, filter cake send baking cyaniding workshop to extract gold and silver, a filtrate pumping press filtration reuse after sizing mixing;
(4) electrodeposition: enter electrodeposition workshop as electrodeposition mother liquor after the filtrate essence filter purification in step (3) after a press filtration, adopt diaphragm electrodeposition to improve electrodeposition efficiency, electrical integration two sections carries out, adopt carbon steel cathodes plate and carbon steel palisade positive plate, without the need to adding extra ionogen, antimony is separated out at negative electrode, manually beats exhaustion of yin pole antimony, washes away electrodeposition solution on negative electrode antimony and soluble salt with hot water;
(5) liquid waste disposal: the lean solution part after the electrodeposition in step (4) is used for sizing mixing, another part enters acidifying groove, use sulfuric acid to be adjusted to pH=1, filter the antimony sulfide precipitation produced in acidization, filtrate enters effluent treatment plant reuse after treatment.
2. a kind of novel process containing reclaiming antimony in antimony gold concentrate according to claim 1, it is characterized in that, in described step (2), extraction time is 1-3 hour.
3. a kind of novel process containing reclaiming antimony in antimony gold concentrate according to claim 1, it is characterized in that, described in step (4), electrodeposition mother liquor antimony content is for being greater than 50g/L, and electrodeposition flow is 10.5m 3/ h.
4. a kind of novel process containing reclaiming antimony in antimony gold concentrate according to claim 1 and 2, it is characterized in that, in step (4), one section of electrodeposition current density controls at 9000A/ ㎡, and two sections of electrodeposition current densities control at 4500A/ ㎡.
CN201510148856.8A 2015-03-31 2015-03-31 New technology for recovering antimony from antimony-containing gold concentrate Pending CN104831315A (en)

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Cited By (10)

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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
CN107641818A (en) * 2017-11-04 2018-01-30 山东恒邦冶炼股份有限公司 A kind of technique for producing mao antimony
CN105951146B (en) * 2016-05-06 2018-04-03 燕山大学 A kind of preparation method of antimony trisulfide film
CN107988488A (en) * 2017-11-24 2018-05-04 江苏盐城环保科技城重金属防治研究中心 A kind of method of hydrometallurgic recovery mercury antimony in antimony ore mine tailings from mercury
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
CN106367780B (en) * 2016-08-31 2018-08-28 北京矿冶研究总院 A kind of method of antimony-containing solution eddy flow electrodeposition production antimony
CN109881004A (en) * 2019-04-01 2019-06-14 山东恒邦冶炼股份有限公司 A method of reducing gold grade in hair antimony leachate
CN110257627A (en) * 2019-07-08 2019-09-20 湖南辰州矿业有限责任公司 A kind of method that gold sulphide concentrate removes antimony, lead
CN110629042A (en) * 2019-11-05 2019-12-31 湖南工业大学 Method for leaching antimony oxide material by tartaric acid system and producing metallic antimony by electrodeposition
CN111074303A (en) * 2020-01-19 2020-04-28 北京科技大学 Method for separating antimony and gold by crude antimony non-anode-residue electrolysis

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105951146B (en) * 2016-05-06 2018-04-03 燕山大学 A kind of preparation method of antimony trisulfide film
CN106367780B (en) * 2016-08-31 2018-08-28 北京矿冶研究总院 A kind of method of antimony-containing solution eddy flow electrodeposition production 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
CN107641818A (en) * 2017-11-04 2018-01-30 山东恒邦冶炼股份有限公司 A kind of technique for producing mao antimony
CN107988488A (en) * 2017-11-24 2018-05-04 江苏盐城环保科技城重金属防治研究中心 A kind of method of hydrometallurgic recovery mercury antimony in antimony ore mine tailings from mercury
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
CN109881004A (en) * 2019-04-01 2019-06-14 山东恒邦冶炼股份有限公司 A method of reducing gold grade in hair antimony leachate
CN109881004B (en) * 2019-04-01 2021-01-29 山东恒邦冶炼股份有限公司 Method for reducing gold grade in crude antimony leaching solution
CN110257627A (en) * 2019-07-08 2019-09-20 湖南辰州矿业有限责任公司 A kind of method that gold sulphide concentrate removes antimony, lead
CN110629042A (en) * 2019-11-05 2019-12-31 湖南工业大学 Method for leaching antimony oxide material by tartaric acid system and producing metallic antimony by electrodeposition
CN111074303A (en) * 2020-01-19 2020-04-28 北京科技大学 Method for separating antimony and gold by crude antimony non-anode-residue electrolysis
CN111074303B (en) * 2020-01-19 2021-03-05 北京科技大学 Method for separating antimony and gold by crude antimony non-anode-residue electrolysis

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Application publication date: 20150812