CN102399986A - Method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper - Google Patents
Method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper Download PDFInfo
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- CN102399986A CN102399986A CN2011104463121A CN201110446312A CN102399986A CN 102399986 A CN102399986 A CN 102399986A CN 2011104463121 A CN2011104463121 A CN 2011104463121A CN 201110446312 A CN201110446312 A CN 201110446312A CN 102399986 A CN102399986 A CN 102399986A
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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
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Abstract
The invention relates to a method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper, and belongs to the technical field of production processes for recovering zinc from the liquid obtained by calcining, acid leaching and copper extraction in metallurgical chemical industries. The method comprises the following steps of: performing acid leaching, extracting, extracting the copper by electrodeposition and adding sodium sulfide into zinc-containing filtrate to precipitate zinc. The method is simple and practicable; and the zinc serving as a valuable metal is recovered while valuable metals such as gold, silver, the copper and sulfur are recovered fully in a process for calcining gold concentrates, so multielement gold-containing gold concentrate resources are utilized effectively, wastes are turned into wealth, the utilization rate of the resources is improved further and the economic benefits of enterprises are increased.
Description
Technical field
The present invention relates to contain zinc-copper gold concentrate roasting acid leaching-extraction and put forward the method that further reclaims zinc behind the copper in the liquid, belong to baking acid immersion extraction in the chemical metallurgy and put forward the technical field of producing that liquid behind the copper reclaims zinc.
Background technology
At present, contain the zinc-copper gold ore and adopt baking acid immersion technology, pickling liquor contains zinc, metals such as copper, extraction electrodeposition method extract behind the copper cathode copper, and extraction carries that liquid is raffinate behind the copper, containing zinc is 3000--4000mg/l.At present, generally extraction is carried that liquid adopts the lime neutralisation to handle behind the copper, is returned production system after neutralization back liquid filters, in the slag press filtration after store up, wherein valuable metal zinc is not recycled, and has wasted valuable resource.
Summary of the invention
The objective of the invention is to solve the weak point that above-mentioned prior art exists, provide a kind of simple
Be prone to row, in gold concentrate roasting technology, fully reclaim in the gold, silver and bronze sulphur valuable metal; Fully reclaimed valuable metal zinc again; Effectively utilized and contained golden fine gold mineral containing multiple elements resource; Turn waste into wealth, further improve resource utilization with increase the business economic benefit put forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction.
The present invention realizes through following technical scheme:
A kind ofly put forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction, its special character is may further comprise the steps:
1, will contain behind the zinc-copper gold concentrate roasting hot calcine of gained and be delivered to through cooling drum and carry out acidleach in the pickling tank, control acidleach temperature is at 80-90 ℃, acidleach 5-7 hour, acid leaching ore pulp;
Be added with the sulfuric acid that concentration is 25-35g/l in the said pickling tank;
2, acid leaching ore pulp carries out liquid-solid the separation through thickener with vacuum filter, must contain the zinc-copper pickling liquor and contain the gold and silver solid materials;
3, contain the zinc-copper pickling liquor and extract cathode copper through extraction plant and electrowinning plant, liquid economy-combat liquid pump pumped in the steel basin after copper was carried in extraction, and in steel basin, added lime, stirred 1.0-2.0 hour, made to extract to carry that the pH value of liquid is 3.5-4.5 behind the copper;
4, the slurry of step 3 gained being delivered to whizzer filters; Must contain zinc filtrating; To contain zinc filtrating and be delivered to heavy zinc steel basin, and in steel basin, to add concentration be the sodium sulfide solution of 15-20%, guarantee sodium sulphite and contain zinc in the zinc filtrating by mass ratio 1: (0.7-1.2) fully reaction; Be that to control the PH that contains zinc filtrating be 6.0-6.5 for the sodium hydroxide solution of 25-35% through adding concentration in the process; Stirring reaction 5-7 hour, through adding sodium sulphite, so that the zinc that contains in the zinc liquid is separated out with the zinc sulphide deposition fully;
5, filter through pressure filter, the filter cake that obtains is the cadmia of zinc content at 43.2-45.8%.
Of the present inventionly a kind ofly put forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction, simple, economical and practical; Adopt the heavy zinc apparatus processes extraction of sulfuration to carry liquid behind the copper, obtain the cadmia that zinc content is 43.2%-45.8%, both fully reclaimed gold, silver and bronze sulphur valuable metal; Fully reclaimed valuable metal zinc again; Effectively utilized to contain golden fine gold mineral containing multiple elements resource, turned waste into wealth, further improved resource utilization and increase the business economic benefit.
Embodiment
Provide embodiment of the present invention below with reference to accompanying drawing, be used for the present invention is done further explanation.
Embodiment 1
The a kind of of present embodiment puies forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction, and may further comprise the steps: hot calcine is delivered in the pickling tank through cylinder after containing the zinc-copper gold concentrate roasting, utilizes 80-90 ℃ of self temperature control acidleach temperature of hot calcine; Add sulfuric acid, control sulfuric acid concentration 25g/l through three placed in-line pickling tanks, agitation leach 5 hours; Ore pulp separates through thickner and vacuum filter are liquid-solid after the acidleach, obtains to contain the zinc-copper pickling liquor and contain the gold and silver solid materials, contains the zinc-copper pickling liquor through extraction plant, electrowinning plant production cathode copper; Liquid economy-combat liquid pump pumped in the lime neutralizing well after copper was carried in extraction, added lime control PH=3.5, stirred after 1.0 hours; Through whizzer cross filter in slag with contain zinc filtrating; Contain zinc filtrating and get into heavy zinc steel basin, and in steel basin, to add concentration be 15% sodium sulfide solution, guarantee that sodium sulphite and the zinc that contains in the zinc filtrating fully react by mass ratio 1:0.7; Be that to control the PH that contains zinc filtrating be 6.0 for 25% sodium hydroxide solution through adding concentration in the process; Stirring reaction 5 hours is through adding sodium sulphite, so that the zinc that contains in the zinc liquid is separated out with the zinc sulphide deposition fully; Filter through pressure filter, the filter cake that obtains is zinc content at 43.2% cadmia.
Table 1: embodiment 1 result of laboratory test and related data
Embodiment 2
The a kind of of present embodiment puies forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction; May further comprise the steps: hot calcine is delivered in the pickling tank through cylinder after containing the zinc-copper gold concentrate roasting; Utilize 85 ℃ of self temperature control acidleach temperature of hot calcine, add sulfuric acid, control sulfuric acid concentration 30g/l is through three placed in-line pickling tanks; Agitation leach 6 hours; Ore pulp separates through thickner and vacuum filter are liquid-solid after the acidleach, obtains to contain the zinc-copper pickling liquor and contain the gold and silver solid materials, contains the zinc-copper pickling liquor through extraction plant, electrowinning plant production cathode copper; Liquid economy-combat liquid pump pumped in the lime neutralizing well after copper was carried in extraction, added lime control PH=4, stirred after 1.5 hours; Through whizzer 10 cross filter in slag with contain zinc filtrating, contain zinc filtrating and be delivered to heavy zinc steel basin, and in steel basin, to add concentration be 18% sodium sulfide solution; Guarantee that sodium sulphite and the zinc that contains in the zinc filtrating fully react by mass ratio 1:1, in the process through add concentration be 30% sodium hydroxide solution to control the PH that contains zinc filtrating be 6.3, stirring reaction 6 hours; Through adding sodium sulphite; So that the zinc that contains in the zinc liquid is separated out with the zinc sulphide deposition fully, filter through pressure filter, the filter cake that obtains is zinc content at 44.2% cadmia.
Table 2: embodiment 2 results of laboratory test and related data
Embodiment 3
The a kind of of present embodiment puies forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction; May further comprise the steps: hot calcine is delivered in the pickling tank through cylinder after containing the zinc-copper gold concentrate roasting; Utilize 90 ℃ of self temperature control acidleach temperature of hot calcine, add sulfuric acid, control sulfuric acid concentration 35g/l is through three placed in-line pickling tanks; Agitation leach 7 hours; Ore pulp separates through thickner and vacuum filter are liquid-solid after the acidleach, obtains to contain the zinc-copper pickling liquor and contain the gold and silver solid materials, contains the zinc-copper pickling liquor through extraction plant, electrowinning plant production cathode copper; Liquid economy-combat liquid pump pumped in the lime neutralizing well after copper was carried in extraction, added lime control PH=4.5, stirred after 2.0 hours; Through whizzer cross filter in slag with contain zinc filtrating, will contain zinc filtrating and be delivered to heavy zinc steel basin, and in steel basin, to add concentration be 20% sodium sulfide solution; Guarantee that sodium sulphite and the zinc that contains in the zinc filtrating fully react by mass ratio 1:1.2, in the process through add concentration be 35% sodium hydroxide solution to control the PH that contains zinc filtrating be 6.5, stirring reaction 7 hours; Through adding sodium sulphite; So that the zinc that contains in the zinc liquid is separated out with the zinc sulphide deposition fully, filter through pressure filter, the filter cake that obtains is zinc content at 45.8% cadmia.
Table 3: embodiment 3 results of laboratory test and related data
The present invention is a kind of to put forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction; Simple, economical and practical, in gold concentrate roasting technology, fully reclaim in the gold, silver and bronze sulphur valuable metal; Fully reclaimed valuable metal zinc again; Effectively utilized to contain golden fine gold mineral containing multiple elements resource, turned waste into wealth, further improved resource utilization and increase the business economic benefit.
Claims (2)
1. put forward the method that reclaims zinc behind the copper the liquid from containing zinc-copper gold concentrate roasting acid leaching-extraction for one kind, it is characterized in that may further comprise the steps:
1), will contain behind the zinc-copper gold concentrate roasting hot calcine of gained and be delivered to through cooling drum and carry out acidleach in the pickling tank, control acidleach temperature is at 80-90 ℃, acidleach 5-7 hour, acid leaching ore pulp;
2), acid leaching ore pulp carries out liquid-solid the separation through thickener with vacuum filter, must contain the zinc-copper pickling liquor and contain the gold and silver solid materials;
3), contain the zinc-copper pickling liquor and extract cathode copper through extraction plant and electrowinning plant, liquid economy-combat liquid pump pumped in the steel basin after copper was carried in extraction, and in steel basin, added lime, stirred 1.0-2.0 hour, made to extract to carry that the pH value of liquid is 3.5-4.5 behind the copper;
4), the slurry of step 3) gained being delivered to whizzer filters; Must contain zinc filtrating; To contain zinc filtrating and be delivered to heavy zinc steel basin, and in steel basin, to add concentration be the sodium sulfide solution of 15-20%, guarantee sodium sulphite and contain zinc in the zinc filtrating by mass ratio 1: (0.7-1.2) fully reaction; In the process through add concentration be the sodium hydroxide solution of 25-35% to control the PH that contains zinc filtrating be 6.0-6.5, stirring reaction 5-7 hour;
5), filter through pressure filter, the filter cake that obtains is the cadmia of zinc content at 43.2-45.8%.
2. a kind ofly put forward the method that reclaims zinc behind the copper the liquid according to claim 1 is described, it is characterized in that being added with in the pickling tank described in the step 1) sulfuric acid that concentration is 25-35g/l from containing zinc-copper gold concentrate roasting acid leaching-extraction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104463121A CN102399986A (en) | 2011-12-28 | 2011-12-28 | Method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104463121A CN102399986A (en) | 2011-12-28 | 2011-12-28 | Method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper |
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| CN102399986A true CN102399986A (en) | 2012-04-04 |
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| CN2011104463121A Pending CN102399986A (en) | 2011-12-28 | 2011-12-28 | Method for recovering zinc from liquid obtained by calcining, acid leaching and copper extraction of gold concentrate containing zinc and copper |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131162A (en) * | 2014-06-20 | 2014-11-05 | 山东国大黄金股份有限公司 | Copper extraction raffinate comprehensive recycling and cyclic utilization method |
| CN104195324A (en) * | 2014-07-10 | 2014-12-10 | 山东国大黄金股份有限公司 | Method for improving content of sulfur trioxide in sewage and slag |
| CN106636641A (en) * | 2016-12-30 | 2017-05-10 | 四川师范大学 | Dezincification method of copper solution |
| CN107043853A (en) * | 2016-12-30 | 2017-08-15 | 四川师范大学 | The dezincification method of copper solution |
| CN108300857A (en) * | 2018-03-16 | 2018-07-20 | 山东国大黄金股份有限公司 | A method of it comprehensively recovering valuable metal and is recycled from cupric pickle liquor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986851A (en) * | 2006-12-06 | 2007-06-27 | 山东国大黄金股份有限公司 | Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| CN102079595A (en) * | 2010-12-16 | 2011-06-01 | 陆伯新 | Method for treating waste hydrochloric acid containing lead, zinc and ferrum |
-
2011
- 2011-12-28 CN CN2011104463121A patent/CN102399986A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986851A (en) * | 2006-12-06 | 2007-06-27 | 山东国大黄金股份有限公司 | Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| CN102079595A (en) * | 2010-12-16 | 2011-06-01 | 陆伯新 | Method for treating waste hydrochloric acid containing lead, zinc and ferrum |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131162A (en) * | 2014-06-20 | 2014-11-05 | 山东国大黄金股份有限公司 | Copper extraction raffinate comprehensive recycling and cyclic utilization method |
| CN104131162B (en) * | 2014-06-20 | 2016-01-06 | 山东国大黄金股份有限公司 | Liquid synthetical recovery and circulation utilization method more than a kind of extraction copper |
| CN104195324A (en) * | 2014-07-10 | 2014-12-10 | 山东国大黄金股份有限公司 | Method for improving content of sulfur trioxide in sewage and slag |
| CN106636641A (en) * | 2016-12-30 | 2017-05-10 | 四川师范大学 | Dezincification method of copper solution |
| CN107043853A (en) * | 2016-12-30 | 2017-08-15 | 四川师范大学 | The dezincification method of copper solution |
| CN108300857A (en) * | 2018-03-16 | 2018-07-20 | 山东国大黄金股份有限公司 | A method of it comprehensively recovering valuable metal and is recycled from cupric pickle liquor |
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Application publication date: 20120404 |