CN103233120B - Improve flotation of silver concentrate surface-active method in oxygen pressure acidleach process - Google Patents
Improve flotation of silver concentrate surface-active method in oxygen pressure acidleach process Download PDFInfo
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- CN103233120B CN103233120B CN201310153571.4A CN201310153571A CN103233120B CN 103233120 B CN103233120 B CN 103233120B CN 201310153571 A CN201310153571 A CN 201310153571A CN 103233120 B CN103233120 B CN 103233120B
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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
Abstract
One improves flotation of silver concentrate surface-active method in oxygen pressure acidleach process, it in the process of sizing mixing, adopts polyvinylpyrrolidone as tensio-active agent to improve the surfactivity of flotation of silver concentrate in oxygen pressure acidleach process, make high temperature, high-pressure activated after flotation of silver concentrate particle less in uniform dispersion state, increase the contact surface of flotation of silver concentrate liquid phase, solid phase in oxygen pressure acid-leaching reaction, impel carrying out smoothly of zinc sulphide solubilizing reaction, improve the leaching yield of zinc.
Description
Technical field
The present invention relates to Metal smelting technical field, particularly a kind of polyvinylpyrrolidone that adopts improves flotation of silver concentrate surface-active method in oxygen pressure acidleach process as tensio-active agent.
Background technology
Current oxygen pressure acidleach technology is widely applied in zinc hydrometallurgy field, it is material such as process lead and zinc bulk concentrate, zinc sulfide concentrates etc. that existing oxygen pressure acidleach engineering practice is produced, namely by utilizing sulfuric acid leaching lead and zinc bulk concentrate to after the pressurization of lead and zinc bulk concentrate oxygenation, in oxygen pressure acidleach process, use sulfonated lignin to make the tensio-active agent of material, the technique of process unclassified stores is also similar.
Because flotation of silver concentrate is the product of conventional wet lay zinc metallurgy acid leaching residue through flotation, it is high and containing zinc, copper, the plumbous feature such as low that flotation of silver concentrate has argentiferous.Next is that flotation of silver concentrate experienced by 800 ~ 900 DEG C of fluidized bed roastings, normal pressure acidleach, ore dressing flotation three process, therefore silver, copper, lead, the zinc thing phase complicated in flotation of silver concentrate, silver in flotation of silver concentrate is silver sulfide and elemental silver mainly, zinc is zinc in zinc sulphide and franklinite mainly, sulphur is mainly sulfur and elementary sulfur, and iron is mainly iron in franklinite and ironic hydroxide.Flocculation agent (polyacrylamide as very strong in coherency) and multiple beneficiation reagent (as the gas chromatography such as xanthate, whipping agent) is contained besides in flotation of silver concentrate, easily lump in oxygen pressure acidleach process, its activation capacity of tensio-active agent adopting sulfonated lignin to make flotation of silver concentrate has certain limitation, oxygen can not be stoped to press material in acidleach process to cause balling situation to occur due to flocculation agent effect even if sulfonated lignin usage quantity increases.For ensureing the surface-activation effect of flotation of silver concentrate in oxygen pressure acidleach process, need to use tensio-active agent that activation capacity is stronger to improve the surfactivity of flotation of silver concentrate, intensified Daqu silver preparation concentrate dispersion steps.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of and adopt polyvinylpyrrolidone as tensio-active agent to improve flotation of silver concentrate surface-active method in oxygen pressure acidleach process.
Technical scheme of the present invention is: one improves flotation of silver concentrate surface-active method in oxygen pressure acidleach process, it adopts polyvinylpyrrolidone as tensio-active agent to improve the surfactivity of flotation of silver concentrate in oxygen pressure acidleach process, make high temperature, high-pressure activated after flotation of silver concentrate particle less in uniform dispersion state, increase the contact surface of flotation of silver concentrate liquid phase, solid phase in oxygen pressure acid-leaching reaction, impel carrying out smoothly of zinc sulphide solubilizing reaction, its concrete steps are as follows:
A, to size mixing, first flotation of silver concentrate is sized mixing, adopt flotation of silver concentrate to mix with zinc electrolytic waste liquid in process of sizing mixing to size mixing, the sulfuric acid concentration of zinc electrolytic waste liquid is 180 ~ 250g/L, the ratio of flotation of silver concentrate and zinc electrolytic waste liquid is 1:6 ~ 10, add in the process of sizing mixing weight percent be 0.25 ~ 2.5% polyvinylpyrrolidone make tensio-active agent.
B, High Temperature High Pressure activate, joined in autoclave by flotation of silver concentrate ore pulp after sizing mixing and carry out High Temperature High Pressure activation, temperature during High Temperature High Pressure activation in autoclave is 140 ~ 180 DEG C, passes into pressurized air simultaneously, pressure 0.7 ~ 1.5MPa is maintained, 0.5 ~ 3 hour time during activation.
Through high temperature, high-pressure activated after flotation of silver concentrate particle less in uniform dispersion state, add the contact surface of flotation of silver concentrate liquid phase, solid phase in oxygen pressure acid-leaching reaction, impel carrying out smoothly of zinc sulphide solubilizing reaction, improve the leaching yield of zinc.
The activation principle of polyvinylpyrrolidone under high temperature, condition of high voltage is as follows:
Flocculation agent is contained as polyacrylamide in flotation of silver concentrate, this material is acrylamide monomer bonded structure end to end, under the condition of high temperature, high pressure, utilize polyvinylpyrrolidone to carry out the structure of this keyed jointing end to end of disintegration polyacrylamide, its cohesion was lost efficacy, make flotation of silver concentrate as far as possible in small-particle dispersion state, to increase the contact surface of oxygen pressure acidleach operation liquid phase, solid phase, impel zinc sulphide solubilizing reaction to carry out smoothly, improve the leaching yield of zinc.
The present invention compared with prior art has following features:
1, polyvinylpyrrolidone high temperature resistant, high pressure, peracid, nontoxic odorlessness, chemical property is more stable, polyvinylpyrrolidone is adopted to make the backbone of flocculation agent in tensio-active agent energy disintegration material, make the dispersion state that flotation of silver concentrate keeps good, to increase the contact surface of oxygen pressure acidleach operation liquid phase, solid phase, impel zinc sulphide solubilizing reaction to carry out smoothly, improve the leaching yield of zinc.
When 2, adopting polyvinylpyrrolidone to make tensio-active agent, the leaching yield of zinc is higher than the leaching yield of zinc when using ligninsulfonate to make tensio-active agent.
3, adopt polyvinylpyrrolidone to make the usage quantity of tensio-active agent, cost is lower than ligninsulfonate, reduce production cost.
Below in conjunction with embodiment, the invention will be further described.
Embodiment
Embodiment: one improves flotation of silver concentrate surface-active method in oxygen pressure acidleach process, described flotation of silver concentrate is the product of conventional wet lay zinc metallurgy acid leaching residue through flotation, in its composition: Cu content is 5.01%, Zn content is the gas chromatography such as 30.09% and flocculation agent, xanthate, pore forming material, wherein, Cu, Zn composition is weight percentage.
Its concrete steps are as follows:
A, to size mixing, first flotation of silver concentrate is sized mixing, adopt flotation of silver concentrate to mix with zinc electrolytic waste liquid in process of sizing mixing to size mixing, the sulfuric acid concentration of zinc electrolytic waste liquid is 180 ~ 250g/L, the ratio of flotation of silver concentrate and zinc electrolytic waste liquid is 1:6 ~ 10, add in the process of sizing mixing weight percent be 0.25 ~ 2.5% polyvinylpyrrolidone make tensio-active agent.
B, High Temperature High Pressure activate, joined in autoclave by flotation of silver concentrate ore pulp after sizing mixing and carry out High Temperature High Pressure activation, temperature during High Temperature High Pressure activation in autoclave is 140 ~ 180 DEG C, passes into pressurized air simultaneously, pressure 0.7 ~ 1.5MPa is maintained, 0.5 ~ 3 hour time during activation.
Through high temperature, high-pressure activated after flotation of silver concentrate particle less in uniform dispersion state, add the contact surface of flotation of silver concentrate liquid phase, solid phase in oxygen pressure acid-leaching reaction, impel carrying out smoothly of zinc sulphide solubilizing reaction, improve the leaching yield of zinc.
Technique scheme is successfully applied to test in Shuikoushan Nonferrous Metal Group Corporation, polyvinylpyrrolidone consumption on Cu, Zn leaching yield to affect test-results as shown in table 1, calcium lignin sulphonate on Cu, Zn leaching yield to affect test-results as shown in table 2.Polyvinylpyrrolidone consumption is few as can be seen from Table 1, zinc leaching rate is higher, and this illustrates that the surface-activation effect of polyvinylpyrrolidone is better.No matter how many calcium lignin sulphonate consumption is as can be seen from Table 2, the leaching yield of zinc is low when all making tensio-active agent than use polyvinylpyrrolidone, relatively can find to use polyvinylpyrrolidone to make flotation of silver concentrate oxygen pressure pickled surfaces promoting agent have that zinc leaching rate is high, low two advantages of cost by table 1, table 2.
Table 1 polyvinylpyrrolidone consumption affects test-results to Cu, Zn leaching yield
Table 2 calcium lignin sulphonate affects test-results to Cu, Zn leaching yield
Claims (1)
1. one kind is improved flotation of silver concentrate surface-active method in oxygen pressure acidleach process, described flotation of silver concentrate is the product of conventional wet lay zinc metallurgy acid leaching residue through flotation, in its composition: Cu content is 0.5 ~ 6%, Zn content is 20 ~ 40% and flocculation agent, xanthate, pore forming material, wherein, Cu, Zn composition is weight percentage; It is characterized in that: it adopts polyvinylpyrrolidone as tensio-active agent to improve the surfactivity of flotation of silver concentrate in oxygen pressure acidleach process, make high temperature, high-pressure activated after flotation of silver concentrate particle less in uniform dispersion state, increase the contact surface of flotation of silver concentrate liquid phase, solid phase in oxygen pressure acid-leaching reaction, impel carrying out smoothly of zinc sulphide solubilizing reaction; Its concrete steps are as follows:
A, to size mixing, first flotation of silver concentrate is sized mixing, adopt flotation of silver concentrate to mix with zinc electrolytic waste liquid in process of sizing mixing to size mixing, the sulfuric acid concentration of zinc electrolytic waste liquid is 180 ~ 250g/L, the ratio of flotation of silver concentrate and zinc electrolytic waste liquid is 1:6 ~ 10, add in the process of sizing mixing weight percent be 0.25 ~ 2.5% polyvinylpyrrolidone make tensio-active agent;
B, High Temperature High Pressure activate, joined in autoclave by flotation of silver concentrate ore pulp after sizing mixing and carry out High Temperature High Pressure activation, temperature during High Temperature High Pressure activation in autoclave is 140 ~ 180 DEG C, passes into pressurized air simultaneously, pressure 0.7 ~ 1.5MPa is maintained, 0.5 ~ 3 hour time during activation.
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| CN107619925B (en) * | 2017-09-27 | 2019-01-08 | 南丹县南方有色金属有限责任公司 | The technique of copper, indium in a kind of efficiently concentrating zinc sulfide concentrates |
| CN108315571A (en) * | 2018-01-17 | 2018-07-24 | 中国瑞林工程技术有限公司 | A kind for the treatment of process of Containing Sulfur arsenic material |
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| CN101643857A (en) * | 2009-08-25 | 2010-02-10 | 西部矿业股份有限公司 | Comprehensive recovery method of complex polymetal sulphide ore containing copper, lead and zinc |
| CN101876008A (en) * | 2009-12-17 | 2010-11-03 | 株洲冶炼集团股份有限公司 | Method for reducing zinc content of leached residue in zinc hydrometallurgy process |
| CN102002602A (en) * | 2010-11-10 | 2011-04-06 | 云南永昌铅锌股份有限公司 | Method for increasing recovery rates of lead and zinc during lead-zinc sulfide ore dressing-smelting joint application |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RO60352A2 (en) * | 1970-11-09 | 1976-08-15 | ||
| CN101245407A (en) * | 2008-03-19 | 2008-08-20 | 云南冶金集团总公司 | Selecting-smelting method for processing complex hard-washing low ore grade pulmbous sulfide zincium mine |
| CN101559340A (en) * | 2009-05-18 | 2009-10-21 | 中国科学院长春应用化学研究所 | Method for preparing non-agglomerate nanometer material |
| CN101591733A (en) * | 2009-06-22 | 2009-12-02 | 云南永昌铅锌股份有限公司 | Precipitating alum and removing iron method in the high-iron zinc sulfide concentrate pressurized acid leaching still |
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