CN103233120A - Method for improving surface activity of floatation silver concentrates during oxygen pressure acid leaching process - Google Patents
Method for improving surface activity of floatation silver concentrates during oxygen pressure acid leaching process Download PDFInfo
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- CN103233120A CN103233120A CN2013101535714A CN201310153571A CN103233120A CN 103233120 A CN103233120 A CN 103233120A CN 2013101535714 A CN2013101535714 A CN 2013101535714A CN 201310153571 A CN201310153571 A CN 201310153571A CN 103233120 A CN103233120 A CN 103233120A
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- silver preparation
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Abstract
The invention discloses a method for improving the surface activity of floatation silver concentrates during a oxygen pressure acid leaching process. The method is characterized by taking polyvinylpyrrolidone as a surface active agent during a size mixing process so as to improve the surface activity of the floatation silver concentrates during the oxygen pressure acid leaching process, thereby enabling less activated floatation silver concentrates particles at high temperature and high pressure to be at a uniform dispersion state; and the contact surfaces of the floatation silver concentrates at a liquid phase and a solid phase are enlarged in an oxygen pressure acid leaching reaction, so that a zinc sulfide dissolving reaction is carried out smoothly, and the zinc leaching rate is improved.
Description
Technical field
The present invention relates to the Metal smelting technical field, particularly a kind of employing polyvinylpyrrolidone improves flotation silver preparation concentrate surface-active method in oxygen pressure acidleach process as tensio-active agent.
Background technology
Oxygen presses the acidleach technology to obtain widespread use in the zinc hydrometallurgy field at present, it is to handle materials such as lead and zinc bulk concentrate, zinc sulfide concentrates that existing oxygen presses acidleach engineering practice to produce, namely utilize sulfuric acid to leach lead and zinc bulk concentrate by after the lead and zinc bulk concentrate oxygenation is pressurizeed, use sulfonated lignin to make the tensio-active agent of material in oxygen pressure acidleach process, the technology of handling unclassified stores is also similar.
Since the flotation silver preparation concentrate be conventional zinc hydrometallurgy acid leaching residue through the product of flotation, it is high and contain zinc, copper, plumbous characteristics such as low that the flotation silver preparation concentrate has an argentiferous.Next is that the flotation silver preparation concentrate has experienced 800～900 ℃ of fluidized bed roastings, normal pressure acidleach, ore dressing flotation three process, so the silver in the flotation silver preparation concentrate, copper, lead, zinc thing phase composition complexity, silver in the flotation silver preparation concentrate mainly is silver sulfide and simple substance silver, zinc mainly is zinc in zinc sulphide and the franklinite, sulphur is mainly sulphur and elementary sulfur in the sulfide, and iron is mainly iron and the ironic hydroxide in the franklinite.Contain flocculation agent (polyacrylamide very strong as coherency) besides in the flotation silver preparation concentrate, reach multiple beneficiation reagent (as multiple organism such as xanthate, whipping agents), in oxygen pressure acidleach process, lump easily, its activation capacity of tensio-active agent that adopts sulfonated lignin to make the flotation silver preparation concentrate has certain limitation, and material takes place owing to the flocculation agent effect causes the balling situation in the oxygen pressure acidleach process even the increase of sulfonated lignin usage quantity can not stop.For guaranteeing the surface-activation effect of flotation silver preparation concentrate in oxygen pressure acidleach process, need to use the stronger tensio-active agent of activation capacity to improve the surfactivity of flotation silver preparation concentrate, strengthen flotation silver preparation concentrate dispersion steps.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of employing polyvinylpyrrolidone to improve the flotation silver preparation concentrate as tensio-active agent and press surface-active method in the acidleach process at oxygen.
Technical scheme of the present invention is: a kind of flotation silver preparation concentrate that improves is pressed surface-active method in the acidleach process at oxygen, it is to adopt polyvinylpyrrolidone to improve the surfactivity of flotation silver preparation concentrate in oxygen pressure acidleach process as tensio-active agent, make that flotation silver preparation concentrate particle after the activation of high temperature, high pressure is less to be uniform dispersion state, increase the contact surface of flotation silver preparation 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, size mixing, at first the flotation silver preparation concentrate is sized mixing, adopting the flotation silver preparation concentrate to mix with the zinc electrolysis waste solution in the process of sizing mixing sizes mixing, the sulfuric acid concentration of zinc electrolysis waste solution is 180～250g/L, the ratio of flotation silver preparation concentrate and zinc electrolysis waste solution is 1:6～10, adds weight percent and is 0.25～2.5% polyvinylpyrrolidone in the process of sizing mixing and make tensio-active agent.
B, High Temperature High Pressure activation, flotation silver preparation concentrate ore pulp after sizing mixing joined carry out High Temperature High Pressure activation in the autoclave, the temperature during the High Temperature High Pressure activation in the autoclave is 140～180 ℃, feeds pressurized air simultaneously, keep pressure 0.7～1.5MPa during activation, 0.5～3 hour time.
Flotation silver preparation concentrate particle after the activation of high temperature, high pressure is less is uniform dispersion state, has increased the flotation silver preparation concentrate and has pressed the contact surface of liquid phase, solid phase in the acid-leaching reaction at oxygen, impels carrying out smoothly of zinc sulphide solubilizing reaction, improves the leaching yield of zinc.
The activation principle of polyvinylpyrrolidone under high temperature, condition of high voltage is as follows:
Contain flocculation agent such as polyacrylamide in the flotation silver preparation concentrate, this material is acrylamide monomer keyed jointing structure end to end, under the condition of high temperature, high pressure, utilize polyvinylpyrrolidone to come the structure of this keyed jointing end to end of disintegration polyacrylamide, its cohesion was lost efficacy, make the flotation silver preparation concentrate be the small-particle dispersion state as far as possible, press the contact surface of acidleach operation liquid phase, solid phase to increase oxygen, impel the zinc sulphide solubilizing reaction to carry out smoothly, improve the leaching yield of zinc.
The present invention compared with prior art has following characteristics:
1, high temperature resistant, the high pressure of polyvinylpyrrolidone, peracid, nontoxic odorlessness, chemical property is more stable, adopt polyvinylpyrrolidone to make the backbone of flocculation agent in the tensio-active agent energy disintegration material, make the flotation silver preparation concentrate keep good dispersion state, press the contact surface of acidleach operation liquid phase, solid phase to increase oxygen, impel the zinc sulphide solubilizing reaction to carry out smoothly, improve the leaching yield of zinc.
The leaching yield of zinc will be higher than the leaching yield of zinc when using ligninsulfonate to make tensio-active agent when 2, adopting polyvinylpyrrolidone to make tensio-active agent.
3, it is lower than ligninsulfonate to adopt polyvinylpyrrolidone to make usage quantity, the cost of tensio-active agent, has reduced production cost.
Below in conjunction with embodiment the present invention is further described.
Embodiment
Embodiment: a kind of flotation silver preparation concentrate that improves is pressed surface-active method in the acidleach process at oxygen, described flotation silver preparation concentrate is that conventional zinc hydrometallurgy acid leaching residue is through the product of flotation, in its composition: Cu content is 5.01%, Zn content is 30.09% and multiple organism such as flocculation agent, xanthate, pore forming material, wherein, Cu, Zn composition are weight percentage.
Its concrete steps are as follows:
A, size mixing, at first the flotation silver preparation concentrate is sized mixing, adopting the flotation silver preparation concentrate to mix with the zinc electrolysis waste solution in the process of sizing mixing sizes mixing, the sulfuric acid concentration of zinc electrolysis waste solution is 180～250g/L, the ratio of flotation silver preparation concentrate and zinc electrolysis waste solution is 1:6～10, adds weight percent and is 0.25～2.5% polyvinylpyrrolidone in the process of sizing mixing and make tensio-active agent.
B, High Temperature High Pressure activation, flotation silver preparation concentrate ore pulp after sizing mixing joined carry out High Temperature High Pressure activation in the autoclave, the temperature during the High Temperature High Pressure activation in the autoclave is 140～180 ℃, feeds pressurized air simultaneously, keep pressure 0.7～1.5MPa during activation, 0.5～3 hour time.
Flotation silver preparation concentrate particle after the activation of high temperature, high pressure is less is uniform dispersion state, has increased the flotation silver preparation concentrate and has pressed the contact surface of liquid phase, solid phase in the acid-leaching reaction at oxygen, impels carrying out smoothly of zinc sulphide solubilizing reaction, improves the leaching yield of zinc.
Technique scheme is successfully applied to test in mountain, mouth of a river non-ferrous metal Group Co.,Ltd, the polyvinylpyrrolidone consumption to Cu, Zn leaching yield to influence test-results as shown in table 1, calcium lignin sulphonate to Cu, Zn leaching yield to influence test-results as shown in table 2.The polyvinylpyrrolidone consumption is few as can be seen from Table 1, zinc leaching rate is higher, and the surface-activation effect of this explanation polyvinylpyrrolidone is better.As can be seen from Table 2 the calcium lignin sulphonate consumption no matter what, the leaching yield of zinc is low when all making tensio-active agent than the use polyvinylpyrrolidone, relatively can find to use polyvinylpyrrolidone to make flotation silver preparation concentrate oxygen by table 1, table 2 and press the acidleach tensio-active agent to have zinc leaching rate height, low two advantages of cost.
Table 1 polyvinylpyrrolidone consumption is to the test-results that influences of Cu, Zn leaching yield
Table 2 calcium lignin sulphonate is to the test-results that influences of Cu, Zn leaching yield
Claims (2)
1. one kind is improved flotation silver preparation concentrate surface-active method in oxygen pressure acidleach process, it is characterized in that: it is to adopt polyvinylpyrrolidone to improve the surfactivity of flotation silver preparation concentrate in oxygen pressure acidleach process as tensio-active agent, make that flotation silver preparation concentrate particle after the activation of high temperature, high pressure is less to be uniform dispersion state, increase the contact surface of flotation silver preparation 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, size mixing, at first the flotation silver preparation concentrate is sized mixing, adopting the flotation silver preparation concentrate to mix with the zinc electrolysis waste solution in the process of sizing mixing sizes mixing, the sulfuric acid concentration of zinc electrolysis waste solution is 180～250g/L, the ratio of flotation silver preparation concentrate and zinc electrolysis waste solution is 1:6～10, adds weight percent and is 0.25～2.5% polyvinylpyrrolidone in the process of sizing mixing and make tensio-active agent;
B, High Temperature High Pressure activation, flotation silver preparation concentrate ore pulp after sizing mixing joined carry out High Temperature High Pressure activation in the autoclave, the temperature during the High Temperature High Pressure activation in the autoclave is 140～180 ℃, feeds pressurized air simultaneously, keep pressure 0.7～1.5MPa during activation, 0.5～3 hour time.
2. a kind of flotation silver preparation concentrate that improves according to claim 1 is pressed surface-active method in the acidleach process at oxygen, it is characterized in that: described flotation silver preparation concentrate is that conventional zinc hydrometallurgy acid leaching residue is through the product of flotation, in its composition: Cu content is 0.5 ~ 6%, Zn content is 20 ~ 40% and organism such as flocculation agent, xanthate, pore forming material, wherein, Cu, Zn composition are weight percentage.
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| CN201310153571.4A CN103233120B (en) | 2013-04-27 | 2013-04-27 | Improve flotation of silver concentrate surface-active method in oxygen pressure acidleach process |
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| CN201310153571.4A CN103233120B (en) | 2013-04-27 | 2013-04-27 | Improve flotation of silver concentrate surface-active method in oxygen pressure acidleach process |
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| CN103233120B CN103233120B (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619925A (en) * | 2017-09-27 | 2018-01-23 | 南丹县南方有色金属有限责任公司 | Copper, the technique of 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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2013
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| CN107619925A (en) * | 2017-09-27 | 2018-01-23 | 南丹县南方有色金属有限责任公司 | Copper, the technique of 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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