CN106756024A - A kind of method of cobalt impurity in purifying zinc sulfate solution - Google Patents
A kind of method of cobalt impurity in purifying zinc sulfate solution Download PDFInfo
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Abstract
A kind of method of cobalt impurity in purifying zinc sulfate solution, first takes solution of zinc sulfate to be clean, under conditions of stirring, is added thereto to zinc powder 5-7g/L, antimonic salt 5-7mg/L, is reacted 70-90 minutes at being 61-65 DEG C in temperature；To mantoquita 25-35mg/L, zinc powder 3-5g/L, antimonic salt 4-6mg/L is added in solution, reacted 70-90 minutes at being 87-89 DEG C in temperature；To zinc powder 0.6-0.9g/L is added in solution, temperature is 46-49 DEG C, is reacted 45-55 minutes；Filtering and impurity removing, obtains supernatant；By supernatant temperature be 60-90 DEG C, pH be 4.5-5.4 under conditions of by magnetic field generator, and stopped 30-60 minutes in magnetic figured stone generator；Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.Present invention process route is simple, easy to operate, improves the product quality of zinc sulfate.
Description
Technical field
The invention belongs to chemical technology field, the method for specifically referring to cobalt impurity in a kind of purifying zinc sulfate solution.
Background technology
The method that modern zinc metallurgy is typically used has two kinds, is respectively pyrometallurgy of zinc and zinc hydrometallurgy.What the yield of zinc hydrometallurgy was more than total yield zinc amount is the main flow of zinc metallurgy method.Traditional zinc hydrometallurgy is actually the combined process flow of pyrogenic process and wet method, is the zinc metallurgy method that the beginning of the century occurs, including roast, leaching, purification, five main process of electrodeposition and molten casting.The zinc abstraction factory of China is mostly zinc hydrometallurgy factory, and the main advantage of zinc hydrometallurgy is small environmental pollution, and metal recovery rate is higher, workman's work condition of work is preferable, level of comprehensive utilization is high, and energy consumption is relatively low, is conducive to production equipment maximization, serialization and automation etc..Whote-wet method zinc metallurgy is formed in the technical foundation leached in zinc sulfide concentrates direct weighting, starts to be applied to industrial production in generation in centurial year.The technique eliminates roasting and relieving haperacidity operation in conventional wet smelting process, the sulphur in zinc concentrate be enriched in leached mud in the form of the elementary sulfur in otherwise processed.Pyrometallurgy of zinc includes roasting, three main process of reduction distilled and refining, more ancient pyrometallurgy of zinc method mainly includes zinc vertical retorting and horizontal retort zinc metallurgy, and with production and the development of technology, now more is closed blast furnace zinc metallurgy, also there is part to use electrothermal way zinc metallurgy.Zinc vertical retorting and horizontal retort zinc metallurgy are domestic also to only have little Ji Jia factories to use because energy consumption is too high and effect on environment greatly and is almost eliminated completely very much.Although electrothermal way zinc metallurgy have fewer environmental impacts, but higher and the problems such as cannot mass produce due to consuming energy, therefore Popularization And Development is subject to severely restricts, and the only more sufficient and cheap place of electric power can use.It is high due to having the advantages that to process the compound concentrate of lead zinc and utilization rate that closed blast furnace refines cutting edge of a knife or a sword, two kinds of different metals of lead and zinc can be produced in same seat blast furnace, directly heated using fuel, capacity usage ratio advantage high, be preceding main pyrometallurgy of zinc method.
But, in actual production process, cobalt impurity can be mixed with solution of zinc sulfate, if impurity not removed, product quality can be influenceed.Therefore, the necessary method for designing cobalt impurity in a kind of purifying zinc sulfate solution.
The content of the invention
The method that the technical problem to be solved in the present invention is to provide cobalt impurity in a kind of purifying zinc sulfate solution.
Present disclosure includes：
The method of cobalt impurity, comprises the following steps in a kind of purifying zinc sulfate solution：
（1）Solution of zinc sulfate to be clean is taken, under conditions of stirring, zinc powder 5-7g/L, antimonic salt 5-7mg/L is added thereto to, reacted 70-90 minutes at being 61-65 DEG C in temperature；
（2）To mantoquita 25-35mg/L, zinc powder 3-5g/L, antimonic salt 4-6mg/L is added in solution, reacted 70-90 minutes at being 87-89 DEG C in temperature；
（3）To zinc powder 0.6-0.9 g/L are added in solution, temperature is 46-49 DEG C, is reacted 45-55 minutes；
（4）Filtering and impurity removing, obtains supernatant；
（5）By supernatant temperature be 60-90 DEG C, pH be 4.5-5.4 under conditions of by magnetic field generator, and stopped 30-60 minutes in magnetic figured stone generator；
（6）Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.
In the present invention, as a kind of perferred technical scheme, step（1）In, stirred using 100-150 revs/min of speed.
In the present invention, as a kind of perferred technical scheme, step（1）In, antimonic salt uses antimony sulfate.
In the present invention, as a kind of perferred technical scheme, step（2）In, mantoquita uses copper sulphate.
In the present invention, as a kind of perferred technical scheme, step（4）In, using vacuum filtration removal of impurities.
In the present invention, as a kind of perferred technical scheme, step（5）In, magnetic field generator uses permanent magnet.
The beneficial effects of the invention are as follows,
In the micro cell reaction that solution occurs, displacement metal zinc will constantly dissolve and enter solution the present invention as anode, and be replaced metal impurities ion then in the presence of convection current and diffusion, be discharged and be deposited on negative electrode with metallic state.What the circulation of electricity was relied on inside zinc powder in replacement process is the flowing of electronics, and is then completed by the migration of ion in the solution.The resistance value of previous passage is more much smaller than the latter, thus entirely the current strength produced by micro cell depends primarily on the latter.For replace reaction for, mass transfer and conduct electricity be simultaneously occur, be complementary in other words.Because the flowing of electronics just causes the transmission of matter, and the transmission of matter generates the flowing of electricity, and shown view is just so in microcosmos.Removed from anode region successively if not electronics, zinc ion cannot successively be transferred to solution, i.e., the electronics that anode region productive set gets up will forcefully pin down the movement of zinc ion.Meanwhile, and constantly discharged in negative electrode if not foreign metal ion and capture electronics, electronics also will not continuously flow, i.e., the electronics for getting up in cathodic region institute productive set will prevent continuing to flow into for electronics.Just look like ten million electric dish to the micro cell that ten million zinc powder added in solution is formed with the foreign metal for separating out thereon, they release electronics from zinc, and these are transmitted electronically to foreign metal ion up.In addition, in the solution, migration and diffusion about ion are also an importance, it constitutes the Section of Outer Ring Line of circuit.If lacking this mass transfer link, whole circuit can also be interrupted, because closed cycle cannot be formed.Replacement reaction speed is also influenceed by factors such as zinc powder particle size, mixing speed, reaction temperatures.Quickening searches to mix speed, reduce zinc powder particle size, liter high-temperature and add some favourable ions can accelerate the carrying out of displacement reaction.
The present invention first takes solution of zinc sulfate to be clean, under conditions of stirring, is added thereto to zinc powder 5-7g/L, antimonic salt 5-7mg/L, is reacted 70-90 minutes at being 61-65 DEG C in temperature；To mantoquita 25-35mg/L, zinc powder 3-5g/L, antimonic salt 4-6mg/L is added in solution, reacted 70-90 minutes at being 87-89 DEG C in temperature；To zinc powder 0.6-0.9 g/L are added in solution, temperature is 46-49 DEG C, is reacted 45-55 minutes；Filtering and impurity removing, obtains supernatant；By supernatant temperature be 60-90 DEG C, pH be 4.5-5.4 under conditions of by magnetic field generator, and stopped 30-60 minutes in magnetic figured stone generator；Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.By above step, the present invention can cement out the cobalt impurity in solution of zinc sulfate, and be removed using magnetic method.Present invention process route is simple, easy to operate, reduces the cobalt impurity content in solution of zinc sulfate, improves the product quality of zinc sulfate.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, with reference to specific embodiment, the present invention is expanded on further.
Embodiment 1
The method of cobalt impurity, comprises the following steps in a kind of purifying zinc sulfate solution：
（1）Solution of zinc sulfate to be clean is taken, under conditions of the speed stirring using 100 revs/min, zinc powder 5g/L, antimonic salt 5mg/L is added thereto to, reacted 70 minutes at being 61 DEG C in temperature, antimonic salt uses antimony sulfate；
（2）To mantoquita 25mg/L, zinc powder 3g/L, antimonic salt 4mg/L is added in solution, reacted 70 minutes at being 87 DEG C in temperature, mantoquita uses copper sulphate；
（3）To zinc powder 0.6g/L is added in solution, temperature is 46 DEG C, is reacted 45 minutes；
（4）Using vacuum filtration removal of impurities, supernatant is obtained；
（5）By supernatant temperature be 60 DEG C, pH be 4.5 under conditions of by magnetic field generator, magnetic field generator uses permanent magnet, and is stopped 30 minutes in magnetic figured stone generator；
（6）Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.
Embodiment 2
The method of cobalt impurity, comprises the following steps in a kind of purifying zinc sulfate solution：
（1）Solution of zinc sulfate to be clean is taken, under conditions of the speed stirring using 150 revs/min, zinc powder 7g/L, antimonic salt 7mg/L is added thereto to, reacted 90 minutes at being 65 DEG C in temperature, antimonic salt uses antimony sulfate；
（2）To mantoquita 35mg/L, zinc powder 5g/L, antimonic salt 6mg/L is added in solution, reacted 90 minutes at being 89 DEG C in temperature, mantoquita uses copper sulphate；
（3）To the g/L of zinc powder 0.9 is added in solution, temperature is 49 DEG C, is reacted 55 minutes；
（4）Using vacuum filtration removal of impurities, supernatant is obtained；
（5）By supernatant temperature be 90 DEG C, pH be 5.4 under conditions of by magnetic field generator, magnetic field generator uses permanent magnet, and is stopped 60 minutes in magnetic figured stone generator；
（6）Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.
Embodiment 3
The method of cobalt impurity, comprises the following steps in a kind of purifying zinc sulfate solution：
（1）Solution of zinc sulfate to be clean is taken, under conditions of the speed stirring using 130 revs/min, zinc powder 6g/L, antimonic salt 6mg/L is added thereto to, reacted 80 minutes at being 63 DEG C in temperature, antimonic salt uses antimony sulfate；
（2）To mantoquita 30mg/L, zinc powder 4g/L, antimonic salt 5mg/L is added in solution, reacted 80 minutes at being 88 DEG C in temperature, mantoquita uses copper sulphate；
（3）To zinc powder 0.8g/L is added in solution, temperature is 8 DEG C, is reacted 50 minutes；
（4）Using vacuum filtration removal of impurities, supernatant is obtained；
（5）By supernatant temperature be 80 DEG C, pH be 5.0 under conditions of by magnetic field generator, magnetic field generator uses permanent magnet, and is stopped 50 minutes in magnetic figured stone generator；
（6）Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.
The properties of product of embodiment 1-3 such as following table：
| Project | Zinc sulfate % | Cobalt % | Remaining % |
| Embodiment 1 | 99.7 | 0.1 | 0.2 |
| Embodiment 2 | 99.6 | 0.1 | 0.3 |
| Embodiment 3 | 99.8 | 0.07 | 0.13 |
Those of ordinary skill in the art should be understood：The discussion of any of the above embodiment is exemplary only, it is not intended that imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, can also be combined between technical characteristic in above example or different embodiments, step can be realized with random order, and there are many other changes of different aspect of the invention as described above, and for simplicity, they are provided not in details.Therefore, all any omission, modification, equivalent, improvement within the spirit and principles in the present invention, made etc., should be included within the scope of the present invention.
Claims (6)
1. in a kind of purifying zinc sulfate solution cobalt impurity method, it is characterized in that, comprise the following steps：
（1）Solution of zinc sulfate to be clean is taken, under conditions of stirring, zinc powder 5-7g/L, antimonic salt 5-7mg/L is added thereto to, reacted 70-90 minutes at being 61-65 DEG C in temperature；
（2）To mantoquita 25-35mg/L, zinc powder 3-5g/L, antimonic salt 4-6mg/L is added in solution, reacted 70-90 minutes at being 87-89 DEG C in temperature；
（3）To zinc powder 0.6-0.9 g/L are added in solution, temperature is 46-49 DEG C, is reacted 45-55 minutes；
（4）Filtering and impurity removing, obtains supernatant；
（5）By supernatant temperature be 60-90 DEG C, pH be 4.5-5.4 under conditions of by magnetic field generator, and stopped 30-60 minutes in magnetic figured stone generator；
（6）Solution of zinc sulfate after magnetic field is processed carries out solid-liquor separation.
2. in a kind of purifying zinc sulfate solution as claimed in claim 1 cobalt impurity method, it is characterized in that, step（1）In, stirred using 100-150 revs/min of speed.
3. in a kind of purifying zinc sulfate solution as claimed in claim 1 cobalt impurity method, it is characterized in that, step（1）In, antimonic salt uses antimony sulfate.
4. in a kind of purifying zinc sulfate solution as claimed in claim 1 cobalt impurity method, it is characterized in that, step（2）In, mantoquita uses copper sulphate.
5. in a kind of purifying zinc sulfate solution as claimed in claim 1 cobalt impurity method, it is characterized in that, step（4）In, using vacuum filtration removal of impurities.
6. in a kind of purifying zinc sulfate solution as claimed in claim 1 cobalt impurity method, it is characterized in that, step（5）In, magnetic field generator uses permanent magnet.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107511120A (en) * | 2017-09-22 | 2017-12-26 | 中国科学院合肥物质科学研究院 | Magnetic field is to replacing the regulation and control method of reaction in solution |
| CN109371242A (en) * | 2018-11-07 | 2019-02-22 | 江西理工大学 | A method of the Call Provision from zinc powder purification slag |
| CN113430585A (en) * | 2021-04-30 | 2021-09-24 | 中南大学 | Method for removing cobalt from zinc sulfate solution through synergistic deep purification |
| EP4234640A1 (en) * | 2021-02-05 | 2023-08-30 | Denka Company Limited | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| EP4245813A4 (en) * | 2021-02-05 | 2024-05-08 | Denka Company Limited | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| EP4245814A4 (en) * | 2021-02-05 | 2024-07-03 | Denka Company Ltd | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107511120A (en) * | 2017-09-22 | 2017-12-26 | 中国科学院合肥物质科学研究院 | Magnetic field is to replacing the regulation and control method of reaction in solution |
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| EP4234640A1 (en) * | 2021-02-05 | 2023-08-30 | Denka Company Limited | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| EP4234640A4 (en) * | 2021-02-05 | 2024-05-01 | Denka Company Limited | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| EP4245813A4 (en) * | 2021-02-05 | 2024-05-08 | Denka Company Limited | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| EP4245814A4 (en) * | 2021-02-05 | 2024-07-03 | Denka Company Ltd | Carbon black, carbon black production method, composition for electrode, electrode, and secondary battery |
| CN113430585A (en) * | 2021-04-30 | 2021-09-24 | 中南大学 | Method for removing cobalt from zinc sulfate solution through synergistic deep purification |
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