CN102719671B - Method and device for deeply removing copper of nickel thiocarbonate from nickel-containing solution - Google Patents
Method and device for deeply removing copper of nickel thiocarbonate from nickel-containing solution Download PDFInfo
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- CN102719671B CN102719671B CN201210234162.2A CN201210234162A CN102719671B CN 102719671 B CN102719671 B CN 102719671B CN 201210234162 A CN201210234162 A CN 201210234162A CN 102719671 B CN102719671 B CN 102719671B
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Abstract
The invention discloses a method and device for deeply removing copper of nickel thiocarbonate from a nickel-containing solution. Substantially, the nickel thiocarbonate after pulping is used as a copper removal agent; and the copper removal agent is automatically added through a mechanical mixing pump and is uniformly mixed with the nickel-containing solution in a pipeline reactor to remove copper. The method can realize continuous copper removal in the closed environment, the copper removal efficiency is high, and the concentration of the liquid cooper after copper removal is lower than 3mg/l. The copper-nickel ratio in the copper removal slag is greater than 15, thereby completely meeting the production requirements.
Description
Technical field
The present invention relates to copper nickel field of hydrometallurgy, particularly the technological method of degree of depth separating copper nickel and device from copper nickel mixing solutions.
Background technology
Copper nickel is as the similar element of chemical property, and high efficiency separation becomes the difficult problem on the domestic and international metallurgical boundary of long-standing problem.In China's electricity nickel standard (GB/T6516-1997Ni9996), foreign matter content is required very strict, particularly to the content requirement of impurity copper lower than 0.01%.This carries out degree of depth removing to the impurity copper in nickle electrolysis anode solution with regard to requiring before electro deposited nickel.For this difficult problem, this research is classified as key research projects twice by China in " eight or five " and the ninth five-year plan, and has once attempted various method, is not well solved always.So 2004 time, Jinchuan Non-ferrous Metals Company orients towards the whole country and carries out copper removal project bid, and the copper content in solution after copper removal is loosened to 3mg/L by 2mg/L, and except in copper ashes, copper nickel mass ratio is then reduced to 15 by 20.
Thiocarbonic acid SOH nickel is a kind of efficient Decoppering agent designed for deep copper removal from nickle electrolysis anode solution specially.When thiocarbonic acid SOH nickel joins in nickle electrolysis anode solution after Homogeneous phase mixing, the copper in solution can be down to below 3mg/L, meanwhile can make, except copper nickel in copper ashes is than higher than 15, to reach the requirement of the qualified electric nickel of industrial production completely.Therefore, thiocarbonic acid SOH nickel can be used for industrial production as the efficient Decoppering agent of one completely.
All the time, Jinchuan Non-ferrous Metals Company adopts nickel ore concentrate to add the anode sludge except copper technology, adds fresh and have certain active nickel sulfide concentrate (Ni in boiling copper removal groove in the anolyte after deironing
3s
2) with the anode sludge (mainly containing S), make the trace copper in anolyte be precipitated as CuS and cross and filter.When utilizing this method copper removal, due to nickel sulfide concentrate and the anode sludge to mix decoppering agent density comparatively large, and need meet continuous copper removal requirement on a large scale.The principal feature of the method is: decoppering agent adds from the top of copper removal groove, because density is larger, constantly mix with solution in decoppering agent decline process and contact, when it drops to certain position, due to reaction continue carry out, except copper ashes density diminishes, just can discharge with the overflow port of solution from copper removal groove top, thus complete whole copper removal process.The method adds the anode sludge except process for copper for nickel ore concentrate specially, in the production-scale situation of guarantee, decoppering agent can be made to mix preferably with solution.But due to the existing defects of this technique own, cause the copper ashes amount of output after its copper removal large, nickeliferous height in copper ashes, nickel-copper ratio reaches 2:1, cannot directly return copper production system, therefore no longer must not adopt " copper ashes chlorine soaks-electrolysis decopper(ing) entirely " method, by copper moulding.It is tediously long that this removes process for copper, and cost is high, complicated operation, easily causes environmental problem, but also causes noble metal dispersion.
Thiocarbonic acid SOH nickel copper removal can become alternative existing nickel ore concentrate and add the anode sludge except process for copper.Physicochemical property due to thiocarbonic acid SOH nickel are different from nickel ore concentrate and add the anode sludge.Thiocarbonic acid SOH nickel, owing to being new GCMS computer, has high reactive behavior and lower density.If also adopt similar operating method, in guarantee industrial scale, namely do not reduce treatment capacity, when slave unit top adds thiocarbonic acid SOH nickel copper removal, because solution flow is very large, reach every 75m
3/ h, decoppering agent will certainly be taken out of fast by solution, and cause the reaction times too short, copper removal does not reach requirement.Therefore be necessary to develop a kind of energy adaptation to the copper-removing method of thiocarbonic acid SOH nickel characteristic and supporting device.
Summary of the invention
For above-mentioned situation, the object of this invention is to provide method and the device of a kind of thiocarbonic acid SOH nickel deep copper removal from solution containing nickel, utilize the abundant hybrid reaction of material energy in pipeline reactor and there is no back-mixing, and thiocarbonic acid SOH nickel is easy to by pulp and the fireballing feature of copper-stripping reaction, propose the method adopting thiocarbonic acid SOH nickel deep copper removal from solution containing nickel in pipeline reactor, its concrete operation step is as follows:
The method of thiocarbonic acid SOH nickel deep copper removal from solution containing nickel: by a solution containing nickel adjusted to ph, mixes with thiocarbonic acid SOH nickel slurry after heating and is injected in pipeline reactor, carrying out reaction copper removal;
The diameter d (cm) of described pipeline reactor, length L(m), the flow V(m of mixing solutions
3/ h) with residence time t(min) pass be Vt=60 π (d/200)
2l, and residence time t is 15 ~ 60min.
Before reaction, the pH value of solution containing nickel is adjusted to 2.0 ~ 6.5 in aforesaid method, and is heated to 60 DEG C ~ 90 DEG C.
Described thiocarbonic acid SOH nickel slurry preparation method is:
(1) pH value of solution containing nickel being adjusted to 3.0 ~ 7.0, is then 0.3 ~ 1.0 add thio-carbonate solution by the mol ratio of nickel in thio-carbonate and solution containing nickel, and stirring reaction 5 ~ 30 minutes, obtain thiocarbonic acid SOH nickel slurry;
(2) or by obtaining thiocarbonic acid SOH nickel slurry in step (1) first carry out filtering separation and obtain solid sulfur for nickelous carbonate, then solid sulfur is carried out mixing pulp with solution containing nickel or water for nickelous carbonate, obtain thiocarbonic acid SOH nickel slurry;
Described thio-carbonate solution is Na
2cS
3, Na
2cS
4, Na
2cS
5, Na
2c
2s
5, K
2cS
3, K
2cS
4, K
2cS
5, K
2c
2s
5in the mixture of one or more.
When reacting in aforesaid method: be 1.1 ~ 1.5 to mix solution containing nickel and thiocarbonic acid SOH nickel slurry by thio-carbonate and the mol ratio of the copper in solution containing nickel, be re-introduced in pipeline reactor, react.
Described solution containing nickel is nickle electrolysis anode solution, NiSO
4, NiCl
2, Ni (NO
3)
2the mixture of one or more in solution.
The device that above-mentioned method is supporting, comprise thiocarbonic acid SOH nickel slurry tank, thiocarbonic acid SOH nickel slurry feed pump, solution containing nickel feed pipe, solution containing nickel fresh feed pump and pipeline reactor, described thiocarbonic acid SOH nickel slurry tank is connected to solution containing nickel feed pipe with mix sulphur for nickelous carbonate slurry and solution containing nickel by thiocarbonic acid SOH nickel slurry feed pump, and mixed thiocarbonic acid SOH nickel slurry and solution containing nickel export pipeline reactor to through solution containing nickel fresh feed pump.
Be provided with pipeline mixing device in described pipeline reactor, described pipeline mixing device is cellular grid, in order to strengthen thiocarbonic acid SOH nickel slurry and solution containing nickel hybrid reaction.
Technical superiority of the present invention
(1) because whole reaction process is carried out in the duct, under fluid has certain flow rate condition, and the liquid stream mixing device that in pipeline, interval exists, decoppering agent and the abundant hybrid reaction of solution can be ensured, therefore can eliminate because of the lower detrimentally affect caused of thiocarbonic acid SOH nickel density completely;
(2) decoppering agent owing to using in present method is thiocarbonic acid SOH nickel, is easy to pulp, can add as required, being then together injected in pipeline by mechanically mixing pump with nickle electrolysis anode solution by controlling flow pump.This operating method can make copper removal operating process become very simple, can realize the automatization of decoppering agent adding procedure completely, reduce labour intensity greatly.
(3) whole process is reacted in closed reactor, can reduce calorific loss greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the corollary apparatus of the inventive method;
Wherein, 1 is thiocarbonic acid SOH nickel slurry tank, and 2 is thiocarbonic acid SOH nickel slurry feed pump, and 3 is solution containing nickel feed pipe, and 4 is solution containing nickel fresh feed pump, and 5 is pipeline reactor, and 6 is pipeline mixing device.
Embodiment
Be intended to further illustrate the present invention below in conjunction with embodiment, and unrestricted the present invention.
See Fig. 1, the corollary apparatus of the inventive method comprises thiocarbonic acid SOH nickel slurry tank 1, thiocarbonic acid SOH nickel slurry feed pump 2, solution containing nickel feed pipe 3, solution containing nickel fresh feed pump 4 and pipeline reactor 5, thiocarbonic acid SOH nickel slurry tank 1 is connected to solution containing nickel feed pipe 3 with mix sulphur for nickelous carbonate slurry and solution containing nickel by thiocarbonic acid SOH nickel slurry feed pump 2, and mixed thiocarbonic acid SOH nickel slurry and solution containing nickel export pipeline reactor 5 to through solution containing nickel fresh feed pump 4.Be provided with pipeline mixing device 6 in pipeline reactor 5, pipeline mixing device 6 is cellular grid, in order to strengthen thiocarbonic acid SOH nickel slurry and solution containing nickel hybrid reaction.
Embodiment 1
Being first that the pH value of the nickle electrolysis anode solution of 70g/l is adjusted to 4.0 by nickel concentration, is then ratio and the Na of 0.3 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
3solution hybrid reaction 10 minutes, obtaining thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 0.5mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.5g/l is adjusted to 4.5, heating temperatures to 60 DEG C by copper concentration; Then the ratio being 1.3 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 1.56m
3/ h, is injected in solution containing nickel feed pipe, with 76.56m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 40cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 305m, and feed liquid residence time in pipeline reactor is 30 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.002g/L, except in copper ashes, copper nickel ratio is 25.
Embodiment 2
Being first that the pH value of the nickel sulfate solution of 70g/l is adjusted to 5.0 by nickel concentration, is then ratio and the Na of 0.4 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
3solution hybrid reaction 20 minutes, obtaining thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 1.2mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.6g/l is adjusted to 5.0, heating temperatures to 65 DEG C by copper concentration; Then the ratio being 1.4 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.82m
3/ h, is injected in solution containing nickel feed pipe, with 75.82m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 30cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 268m, and feed liquid residence time in pipeline reactor is 15 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0018g/L, except in copper ashes, copper nickel ratio is 22.
Embodiment 3
Being first that the pH value of the nickle electrolysis anode solution of 70g/l is adjusted to 5.0 by nickel concentration, is then ratio and the Na of 0.4 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2c
2s
5solution hybrid reaction 15 minutes, obtaining thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 0.8mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.5g/l is adjusted to 4.8, heating temperatures to 60 DEG C by copper concentration; Then the ratio being 1.2 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.82m
3/ h, is injected in solution containing nickel feed pipe, with 75.82m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 35cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 329m, and feed liquid residence time in pipeline reactor is 25 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0022g/L, except in copper ashes, copper nickel ratio is 27.
Embodiment 4
Being first that the pH value of the nickle electrolysis anode solution of 70g/l is adjusted to 5.2 by nickel concentration, is then ratio and the Na of 0.6 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
5solution hybrid reaction 12 minutes, refilters and obtains thiocarbonic acid SOH nickel solid, and then solid and nickel sulfate solution being mixed with and obtaining thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 1.5mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.45g/l is adjusted to 4.2, heating temperatures to 63 DEG C by copper concentration; Then the ratio being 1.5 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.18m
3/ h, is injected in solution containing nickel feed pipe, with 75.18m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 50cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 383m, and feed liquid residence time in pipeline reactor is 60 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0016g/L, except in copper ashes, copper nickel ratio is 17.
Embodiment 5
Being first that the pH value of the nickel chloride solution of 70g/l is adjusted to 4.5 by nickel concentration, is then ratio and the K of 0.8 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
3solution hybrid reaction 15 minutes, refilters and obtains thiocarbonic acid SOH nickel solid, and then solid and aqueous solution being prepared thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 1.8mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.7g/l is adjusted to 4.0, heating temperatures to 66 DEG C by copper concentration; Then the ratio being 1.2 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.55m
3/ h, is injected in solution containing nickel feed pipe, with 75.55m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 45cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 158m, and feed liquid residence time in pipeline reactor is 20 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0022g/L, except in copper ashes, copper nickel ratio is 30.
Embodiment 6
Being first that the pH value of the nickel nitrate solution of 70g/l is adjusted to 5.0 by nickel concentration, is then ratio and the K of 1.0 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2c
2s
5solution hybrid reaction 15 minutes, to prepare concentration be thio-carbonate is that the thiocarbonic acid SOH nickel slurry of 1.0mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.55g/l is adjusted to 4.2, heating temperatures to 70 DEG C by copper concentration; Then the ratio being 1.22 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.79m
3/ h, is injected in solution containing nickel feed pipe, with 75.79m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 35cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 197m, and feed liquid residence time in pipeline reactor is 15 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0025g/L, except in copper ashes, copper nickel ratio is 26.
Embodiment 7
Being first that the pH value of the nickle electrolysis anode solution of 70g/l is adjusted to 4.9 by nickel concentration, is then ratio and the Na of 0.7 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
4solution hybrid reaction 30 minutes, to prepare concentration be thio-carbonate is that the thiocarbonic acid SOH nickel slurry of 1.3mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.52g/l is adjusted to 4.0, heating temperatures to 90 DEG C by copper concentration; Then the ratio being 1.3 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.61m
3/ h, is injected in solution containing nickel feed pipe, with 75.61m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 25cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 514m, and feed liquid residence time in pipeline reactor is 20 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0025g/L, except in copper ashes, copper nickel ratio is 26.
Embodiment 8
Being first that the pH value of the nickle electrolysis anode solution of 70g/l is adjusted to 5.0 by nickel concentration, is then ratio and the Na of 0.5 in the mol ratio of nickel in thio-carbonate and electrolytic solution
2cS
3solution hybrid reaction 20 minutes, refilters and obtains thiocarbonic acid SOH nickel solid, and then solid and nickel sulfate solution being mixed with and obtaining thio-carbonate concentration is that the thiocarbonic acid SOH nickel slurry of 1.6mol/l is as decoppering agent; Then be that the nickle electrolysis anode solution pH of 0.65g/l is adjusted to 4.5, heating temperatures to 65 DEG C by copper concentration; Then the ratio being 1.4 in thio-carbonate in decoppering agent and the mol ratio of the copper in nickle electrolysis anode solution mixes, and the input speed controlling thiocarbonic acid SOH nickel slurry feed pump is 0.67m
3/ h, is injected in solution containing nickel feed pipe, with 75.67m after mixing with nickle electrolysis anode solution
3input speed [the i.e. flow V(m of mixing solutions of/h
3/ h)] be injected into diameter 32cm by solution containing nickel fresh feed pump, length is in the pipeline reactor of 235m, and feed liquid residence time in pipeline reactor is 15 minutes.Reacted copper concentration in rear electrolytic solution and reduced to 0.0021g/L, except in copper ashes, copper nickel ratio is 28.
Claims (4)
1. a method for thiocarbonic acid SOH nickel deep copper removal from solution containing nickel, is characterized in that: by solution containing nickel adjusted to ph to 2.0 ~ 6.5, mixes and is injected in pipeline reactor, carry out reaction copper removal after being heated to 60 DEG C ~ 90 DEG C with thiocarbonic acid SOH nickel slurry;
The diameter d (cm) of described pipeline reactor pipeline, length L(m), the flow V(m of mixing solutions
3/ h) with residence time t(min) pass be Vt=60 π (d/200)
2l, and residence time t is 15 ~ 60min;
The described thiocarbonic acid SOH nickel device that the method for deep copper removal is supporting from solution containing nickel comprises thiocarbonic acid SOH nickel slurry tank, thiocarbonic acid SOH nickel slurry feed pump, solution containing nickel feed pipe, solution containing nickel fresh feed pump and pipeline reactor, described thiocarbonic acid SOH nickel slurry tank is connected to solution containing nickel feed pipe with mix sulphur for nickelous carbonate slurry and solution containing nickel by thiocarbonic acid SOH nickel slurry feed pump, and mixed thiocarbonic acid SOH nickel slurry and solution containing nickel export pipeline reactor to through solution containing nickel fresh feed pump;
Be provided with pipeline mixing device in described pipeline reactor, described pipeline mixing device is cellular grid, in order to strengthen thiocarbonic acid SOH nickel slurry and solution containing nickel hybrid reaction.
2. according to the method for a kind of thiocarbonic acid SOH nickel deep copper removal from solution containing nickel described in claim 1, it is characterized in that: described thiocarbonic acid SOH nickel slurry preparation method is:
(1) pH value of solution containing nickel being adjusted to 3.0 ~ 7.0, is then 0.3 ~ 1.0 add thio-carbonate solution by the mol ratio of nickel in thio-carbonate and solution containing nickel, and stirring reaction 5 ~ 30 minutes, obtain thiocarbonic acid SOH nickel slurry;
(2) or by obtaining thiocarbonic acid SOH nickel slurry in step (1) first carry out filtering separation and obtain solid sulfur for nickelous carbonate, then solid sulfur is carried out mixing pulp with solution containing nickel or water for nickelous carbonate, obtain thiocarbonic acid SOH nickel slurry;
Described thio-carbonate solution is Na
2cS
3, Na
2cS
4, Na
2cS
5, Na
2c
2s
5, K
2cS
3, K
2cS
4, K
2cS
5, K
2c
2s
5in the mixture of one or more.
3. according to the method for a kind of thiocarbonic acid SOH nickel deep copper removal from solution containing nickel described in claim 1, it is characterized in that: be 1.1 ~ 1.5 to mix solution containing nickel and thiocarbonic acid SOH nickel slurry by thio-carbonate and the mol ratio of the copper in solution containing nickel, be re-introduced in pipeline reactor, react.
4., according to the method for a kind of thiocarbonic acid SOH nickel deep copper removal from solution containing nickel described in claim 1 or 2, it is characterized in that: described solution containing nickel is nickle electrolysis anode solution, NiSO
4, NiCl
2, Ni (NO
3)
2the mixture of one or more in solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234162.2A CN102719671B (en) | 2012-07-06 | 2012-07-06 | Method and device for deeply removing copper of nickel thiocarbonate from nickel-containing solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234162.2A CN102719671B (en) | 2012-07-06 | 2012-07-06 | Method and device for deeply removing copper of nickel thiocarbonate from nickel-containing solution |
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|---|---|
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| CN102719671B true CN102719671B (en) | 2015-02-04 |
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| CN103320811B (en) * | 2013-06-05 | 2015-08-12 | 中南大学 | A kind of method removing impurity from nickle electrolysis anode solution |
| CN105838883A (en) * | 2016-05-10 | 2016-08-10 | 中国恩菲工程技术有限公司 | System and method for treating lead-bearing solution |
| CN105821206A (en) * | 2016-05-10 | 2016-08-03 | 中国恩菲工程技术有限公司 | Solution purifying system and method |
| CN105950867A (en) * | 2016-05-10 | 2016-09-21 | 中国恩菲工程技术有限公司 | System and method for treating copper-bearing solution |
| CN105950887A (en) * | 2016-05-10 | 2016-09-21 | 中国恩菲工程技术有限公司 | System and method for treating cadmium-bearing solution |
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|---|---|---|---|---|
| CN101250625A (en) * | 2008-02-06 | 2008-08-27 | 中南大学 | Method for detaching impurity copper from solution containing nickel |
| CN101337693A (en) * | 2008-08-13 | 2009-01-07 | 云南冶金集团总公司技术中心 | Method and device for preparing potassium manganate by channelization pressurization |
| CN102502890A (en) * | 2011-10-17 | 2012-06-20 | 中南大学 | Synthesis method of reagent nickel thiocarbonate for deeply removing copper from nickel solution |
| CN202658207U (en) * | 2012-07-06 | 2013-01-09 | 中南大学 | Device for deeply removing copper from nickel-containing solution by nickel thiocarbonate |
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| CN201132116Y (en) * | 2007-12-11 | 2008-10-15 | 南化集团研究院 | Liquid-liquid two-phase reactor |
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|---|---|---|---|---|
| CN101250625A (en) * | 2008-02-06 | 2008-08-27 | 中南大学 | Method for detaching impurity copper from solution containing nickel |
| CN101337693A (en) * | 2008-08-13 | 2009-01-07 | 云南冶金集团总公司技术中心 | Method and device for preparing potassium manganate by channelization pressurization |
| CN102502890A (en) * | 2011-10-17 | 2012-06-20 | 中南大学 | Synthesis method of reagent nickel thiocarbonate for deeply removing copper from nickel solution |
| CN202658207U (en) * | 2012-07-06 | 2013-01-09 | 中南大学 | Device for deeply removing copper from nickel-containing solution by nickel thiocarbonate |
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