CN108117105B - A kind of refining methd of Copper making by-product crude nickle sulphate - Google Patents
A kind of refining methd of Copper making by-product crude nickle sulphate Download PDFInfo
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- CN108117105B CN108117105B CN201711468426.XA CN201711468426A CN108117105B CN 108117105 B CN108117105 B CN 108117105B CN 201711468426 A CN201711468426 A CN 201711468426A CN 108117105 B CN108117105 B CN 108117105B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/10—Sulfates
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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Abstract
The present invention dissolves crude nickle sulphate to obtain nickel sulfate solution, using Na2S2O3Make precipitating reagent recycling valuable metal copper；Oxidant and fluorization agent one-step removal iron therein, arsenic, calcium, magnesium is added in liquid after copper removal；Except liquid uses 2- ethylhexyl phosphoric acid single 2-ethyl hexyl ester (P507) and tributyl phosphate (TBP) Saponified Extractants synergic solvent extraction deep impurity-removing to obtain pure nickel sulfate solution after iron, arsenic, calcium, magnesium；Pure nickel sulfate solution obtains refined sulfuric acid nickel product through evaporative crystallization.Present invention process process is short, low in cost, easy to operate, environmental-friendly, and nickel recovery is high, and extractant is Ke Xunhuanliyong, and products obtained therefrom quality reaches plating grade and LITHIUM BATTERY high-purity sulphuric acid nickel professional standard HG/T2824-2009 Grade A requirement.
Description
Technical field
The present invention relates to a kind of refining methds of Copper making by-product crude nickle sulphate, particularly belong to nonferrous metallurgy Chemical Engineering Technology
Field.
Background technique
Nickel sulfate is the important nonferrous heavy metal chemical products of one kind of nickel, is widely used in chemical industry, light industry, machinery, stone
In the industrial circles such as oil, electronics.A certain amount of nickel is usually contained during Copper making, in copper electrolyte, and with electrolyte
It is continuous circulation and increases, when the content of nickel reaches a certain concentration, it will usually using freezing and crystallizing method progress nickel removal at
Reason, product is crude nickle sulphate, wherein also containing a certain amount of valuable metal copper, while also containing the miscellaneous of other different contents
Matter, such as cobalt, iron, zinc, calcium, magnesium, arsenic.In order to meet the needs of nickel sulfate is growing and be recycled to resource reclaim, urgently
Deep purifying, and its valuable metal of synthetical recovery simultaneously need to be carried out to the crude nickle sulphate generated during Copper making.
Usual crude nickle sulphate method for refining and reclaiming includes: that chemical precipitation method, solvent extraction, ion-exchange, chemistry are heavy
It forms sediment and solvent extraction combination method.Chemical precipitation method is obtained by condensing crystallizing after sulfide precipitation, oxydrolysis precipitating, fluorination precipitation
To product, removal of impurity is not high, and will cause a large amount of losses of nickel, is also easy to produce toxic gas, and reagent consumption amount is big, and
Sodium content is excessively high in product.Solvent extraction is with the extractants imurity-removal such as LIX984, P204, P507, Cyanex-272, most
Condensing crystallizing obtains product afterwards, and this method equipment investment is big, high production cost, and calcium and magnesium removal rate is low.Ion-exchange is using sun
Ion or anion exchange resin adsorbing and removing impurity, last condensing crystallizing obtain product, and this method requires material composition severe
It carves, adaptation range is small, and resin is easy blocking.Chemical precipitation and solvent extraction combined purifying method be to crude nickle sulphate simultaneously into
Row chemical precipitation method and solvent extraction purification removal of impurities, final condensing crystallizing obtain product, although product quality that this method obtains
Height, purification are thorough, but process flow is complicated, the production cycle is long, purification cost recovery height.
Summary of the invention
The present invention proposes a kind of low in cost, operation letter for deficiency existing for existing crude nickle sulphate impurity removal process technology
Just, refining methd environmental-friendly, process flow is short, the high crude nickle sulphate of product quality refine and recycle the side of valuable metal
Method.
A kind of purification process steps of Copper making by-product crude nickle sulphate of the present invention are as follows:
Step 1:Na2S2O3Selective precipitation copper
The meter of 3:1 in mass ratio dissolves the crude nickle sulphate containing As, Ca, Co, Cu, Fe, Mg, Zn impurity with water, obtains thick sulfuric acid
Nickel solution；
By Na2S2O3It is three times in the molar ratio computing of nickel sulfate, using excessive Na2S2O3Crude nickel sulfate solution is selected
Property cement copper, the initial pH of solution precipitation reaction is 0.5, reacts 2h under the conditions of 85 DEG C of temperature of control；After reaction to product
It is filtered, obtains copper removal nickel sulfate solution；Wherein the removal rate of Cu is 99.94%~100%, and the loss late of nickel is 0.75%
~0.80%.
Step 2: a step precipitated iron, arsenic, calcium, magnesium
Under the conditions of 85 DEG C, hydrogen peroxide is added in the nickel sulfate solution of step 1 copper removal, oxidation reaction 20min；Oxidation
After, excessive sodium fluoride is added, adjust solution pH value be 4.5, react 2h, followed by filter, obtain except iron, arsenic,
The nickel sulfate solution of calcium and magnesium, wherein the removal rate of iron, arsenic, calcium and magnesium be respectively 99.38%~99.97%, 97.83%~
99.85%, 97.64%~100%, 99.24%~100%.
Step 3: synergic solvent extraction deep impurity-removing
By 1:1 volume percentage, the mixed organic solvents that soda soap rate is 65% are added to except iron, arsenic, calcium and magnesium
Nickel sulfate solution in, be stirred 5min, balance pH is 4, clarifies 5min, and three-level counter-current extraction under room temperature separates organic phase
And water phase, obtain the nickel sulfate solution for extracting miscellaneous organic phase and deep impurity-removing；Wherein zinc, cobalt, nickel extraction yield be respectively 100%,
98.18%~99.00%, 6.37%~7.82%；Three-level counter-current extraction condition are as follows: being stirred the time is 5min, balances pH
It is 4, settling time 5min.
By comparing for 1:1, the miscellaneous organic phase of extraction first is washed with the acid deionized water of pH=3-4, liquid returns to thick sulphur after washing
In sour nickel solution；It is stripped again with 1mol/L sulfuric acid solution to miscellaneous organic phase is extracted, is stirred 5min, clarify 5min；Room temperature
Lower progress two-stage back extraction separates organic phase and water phase, and organic phase is through regeneration.
The mixed organic solvents press volume percentage, and P507 25%, TBP 5%, sulfonated kerosene are
70%.
Step 4: condensing crystallizing
It is cooled to room temperature after the nickel sulfate solution of deep impurity-removing is concentrated, then crystallized, separation and drying, obtains essence
Sulphuric acid nickel.
The definition of removal rate, loss late, extraction yield of the present invention:
Removal rate: when the aqueous solution of the A containing solute is removed with chemical precipitation method, it is total in slag phase that removal rate is equal to A
The percentage of the total content of content and A in slag liquid two-phase.
Loss late: when the aqueous solution of solute A and B need to separate removal A with chemical precipitation method, loss late is equal to B and exists
The percentage of the total content of total content and B in slag liquid two-phase in slag phase.
Extraction yield: when the aqueous solution of solute A is extracted with organic solvent, extraction yield is equal to A always containing in organic phase
The percentage of the total content of amount and A in two-phase.
Beneficial effects of the present invention: the present invention passes through Na2S2O3Selective precipitation copper, a step precipitated iron, arsenic, calcium and magnesium,
P507 (2- ethylhexyl phosphoric acid single 2-ethyl hexyl ester), TBP (tributyl phosphate) and the collaboration of sulfonated kerosene mixed organic solvents
Extract the technical measures such as deep impurity-removing, purification purification Copper making by-product crude nickle sulphate.Use Na2S2O3Make the heavy copper of precipitating reagent, environment
Close friend, heavy copper effect is good, and the loss amount of nickel is few；One step precipitating is short except iron, arsenic, calcium, the process of magnesium, easy to operate；Synergic solvent extraction
Deep impurity-removing three-level counter-current extraction at normal temperature, nickel and other impurities separating effect are significant, and split-phase speed is fast, are not likely to produce third
Mutually and emulsify.The method of the present invention purification is low in cost, easy to operate, and the heavy copper stage does not generate the gases such as hydrogen sulfide, to environment friend
Good, process flow is short, and product purity is high.
Detailed description of the invention
Fig. 1 is the process flow chart of crude nickle sulphate of the present invention purification.
Specific embodiment
Embodiment 1
Crude nickle sulphate plus water 3:1 in mass ratio are dissolved, solid crude nickle sulphate main component is as shown in table 1, obtained thick
Nickel sulfate solution main component is as shown in table 2.
1 crude nickle sulphate main component (wt%) of table
2 crude nickel sulfate solution essential element mass concentration (unit: g/L) of table
(1)Na2S2O3Selective precipitation copper
Take crude nickel sulfate solution 300mL, Na2S2O3Molar ratio is 3, and the initial pH of solution is 0.5, control reaction temperature is 85
DEG C, the reaction time be 2h or so.It is filtered after heavy copper, the rate of deposition of Cu is 99.97%, and the loss late of nickel is only 0.78%.
Filtrate main component: As0.454g/L, Ca1.482g/L, Co0.108g/L, Cu0.0017g/L, Fe2.614g/L,
Mg2.597g/L, Ni44.252g/L, Zn1.296g/L.
(2) one steps precipitating removes iron, arsenic, calcium, magnesium
Liquid 300mL after heavy copper is taken to be added in reaction vessel, adjusting reaction temperature is 85 DEG C, is slowly added to 10mL dioxygen
Water, oxidization time control in 20min or so, after the sodium fluoride that molar ratio is 4 is added, adjusting pH value is 4.5, control reaction
Time, filtering, the removal rate of As, Ca, Fe and Mg were respectively 97.83%, 99.76%, 99.77%, 99.92% in 2h or so,
Ni hardly loses.
Filtrate main component: As0.0099g/L, Ca0.0035g/L, Co0.100g/L, Cu0.0012g/L,
Fe0.0061g/L, Mg0.002g/L, Ni44.181g/L, Zn1.289g/L.Filtrate carries out solvent extraction processing.
(3) it extracts
Mixed organic solvents are added in liquid after removal of impurities, mix organic phase volume percentage be 25%P507,5%TBP,
70% sulfonated kerosene, soda soap rate are 65%, three-level counter-current extraction under room temperature.
Extraction conditions are as follows: comparing O/A is 1/1, and being stirred the time is 5min, and balance pH is 4 or so, and settling time is
5min, separates organic phase and water phase obtains extracting the nickel sulfate solution of miscellaneous organic phase and deep impurity-removing, the extraction yield point of Zn, Co, Ni
It Wei 100%, 99%, 7.82%；
Main component in liquid after purification: As0.0093g/L, Ca0.0007g/L, Co0.001g/L, Cu0.0001g/L,
Fe0.001g/L, Mg0.0018g/L, Ni40.724g/L, Zn0.0001g/L.Extract miscellaneous organic phase and first uses acid deionized water (pH
=3-4) it is washed by compared to 1:1, only contain nickel, cobalt, iron after washing in liquid, content is respectively 3.28g/L, 0.0013g/
L, 0.0008g/L, liquid returns to crude nickle sulphate dissolution after washing.
The miscellaneous organic phase of extraction is stripped again later, is stripped condition are as follows: O/A 1/1, sulfuric acid concentration 1mol/L, stirring
Incorporation time is 5min, settling time 5min, and two-stage back extraction is carried out under room temperature.Last organic phase after regeneration, returns again sharp
With.
(4) condensing crystallizing
Liquid carries out condensing crystallizing after purifying, and is detected, and liquid density 1.23g/mL, heating evaporation are concentrated into density before being concentrated
To be cooled to room temperature after 1.65g/mL, crystallize, dry after obtain emerald refined sulfuric acid nickel.
Its product quality is as shown in table 3 compared with national sector standard HG/T2824-2009 industrial sulphuric acid nickel.
The nickel sulfate product quality that 3 embodiment 1 of table is refining to obtain is compared with national sector standard HG/T2824-2009
As can be seen from Table 3, the nickel sulfate product quality that embodiment 1 obtains is higher than national standard " HG/T2824-2009 "
Technical requirements can be widely applied to plating and battery industry.
Embodiment 2
Crude nickle sulphate plus water 3:1 in mass ratio are dissolved, solid crude nickle sulphate main component is as shown in table 4, obtained thick
Nickel sulfate solution main component is as shown in table 5.
4 crude nickle sulphate main component (wt%) of table
5 crude nickel sulfate solution essential element mass concentration (unit: g/L) of table
(1)Na2S2O3Selective precipitation copper
Take crude nickel sulfate solution 300mL, Na2S2O3Molar ratio is 3, and the initial pH of solution is 0.5, control reaction temperature is 85
DEG C, the reaction time be 2h or so.After heavy copper, filtering, the rate of deposition of Cu is 100%, and the loss late of nickel is only 0.80%.
Filtrate main component: As0.100g/L, Ca1.679g/L, Co0.058g/L, Cu0.0001g/L, Fe1.030g/L,
Mg1.69g/L, Ni65.47g/L, Zn0.758g/L.
(2) one steps precipitating removes iron, arsenic, calcium, magnesium
Liquid 300mL after heavy copper is taken to be added in reaction vessel, adjusting reaction temperature is 85 DEG C, is slowly added to 10mL dioxygen
Water, oxidization time control in 20min or so, after the sodium fluoride that molar ratio is 5 or so is added, adjusting pH value is 4.5 or so,
The reaction time is controlled in 2h or so, filtering, the removal rate of As, Ca, Fe and Mg is respectively 98.96%, 99.85%, 99.85%,
100%, Ni hardly lose.
Filtrate main component: As0.001g/L, Ca0.0024g/L, Co0.055g/L, Cu0.0001g/L, Fe0.0015g/
L, Mg0.0001g/L, Ni65.339g/L, Zn0.733g/L.Filtrate carries out solvent extraction processing.
(3) it extracts
Mixed organic solvents are added in liquid after removal of impurities, mix organic phase volume percentage be 25%P507,5%TBP,
70% sulfonated kerosene, soda soap rate are 65%, three-level counter-current extraction under room temperature.
Extraction conditions are as follows: comparing O/A is 1/1, and being stirred the time is 5min, and balance pH is 4 or so, and settling time is
5min, separates organic phase and water phase obtains extracting the nickel sulfate solution of miscellaneous organic phase and deep impurity-removing, the extraction yield point of Zn, Co, Ni
It Wei 100%, 98.18%, 6.76%.
Main component in liquid after purification: As0.001g/L, Ca0.0004g/L, Co0.001g/L, Cu0.0001g/L,
Fe0.0003g/L, Mg0.0001g/L, Ni60.924g/L, Zn0.0001g/L.Extract miscellaneous organic phase and first uses acid deionized water (pH
=3-4) it is washed by compared to 1:1, only contain nickel, cobalt after washing in liquid, content is respectively 4.19g/L, 0.001g/L, is washed
It washs rear liquid and returns to crude nickle sulphate dissolution.
The miscellaneous organic phase of extraction is stripped again later, is stripped condition are as follows: O/A 1/1, sulfuric acid concentration 1mol/L, stirring
Incorporation time is 5min, settling time 5min, and two-stage back extraction is carried out under room temperature.Last organic phase after regeneration, returns again sharp
With.
(4) condensing crystallizing
Liquid carries out condensing crystallizing after purifying, and is detected, and liquid density 1.24g/mL, heating evaporation are concentrated into density before being concentrated
To be cooled to room temperature after 1.65g/mL, crystallize, dry after obtain emerald refined sulfuric acid nickel.
Its product quality is as shown in table 6 compared with national sector standard HG/T2824-2009 industrial sulphuric acid nickel.
The nickel sulfate product quality that 6 embodiment 2 of table is refining to obtain is compared with national sector standard HG/T2824-2009
As can be seen from Table 6, the nickel sulfate product quality that embodiment 2 obtains is higher than national standard " HG/T2824-2009 "
Technical requirements can be widely applied to plating and battery industry.
Embodiment 3
Crude nickle sulphate plus water 3:1 in mass ratio are dissolved, solid crude nickle sulphate main component is as shown in table 7, obtained thick
Nickel sulfate solution main component is as shown in table 8.
7 crude nickle sulphate main component (wt%) of table
8 crude nickel sulfate solution essential element mass concentration (unit: g/L) of table
(1)Na2S2O3Selective precipitation copper
Take crude nickel sulfate solution 300mL, Na2S2O3Molar ratio is 3, and the initial pH of solution is 0.5, control reaction temperature is 85
DEG C, the reaction time be 2h or so.After heavy copper, filtering, the rate of deposition of Cu is 99.94%, and the loss late of nickel is only 0.75%.
Filtrate main component: As0.743g/L, Ca0.981g/L, Co0.070g/L, Cu0.0007g/L, Fe3.602g/L,
Mg1.307g/L, Ni58.172g/L, Zn0.837g/L.
(2) one steps precipitating removes iron, arsenic, calcium, magnesium
Liquid 300mL after heavy copper is taken to be added in reaction vessel, adjusting reaction temperature is 85 DEG C, is slowly added to 10mL dioxygen
Water, oxidization time control in 20min or so, after the sodium fluoride that molar ratio is 6 or so is added, adjusting pH value is 4.5 or so,
The reaction time is controlled in 2h or so, filtering, the removal rate of As, Ca, Fe and Mg is respectively 99.85%, 100%, 99.97%,
100%, Ni hardly lose.
Filtrate main component: As0.001g/L, Ca0.0001g/L, Co0.065g/L, Cu0.0006g/L, Fe0.001g/
L, Mg0.0001g/L, Ni58.012g/L, Zn0.833g/L.Filtrate carries out solvent extraction processing.
(3) it extracts
Mixed organic solvents are added in liquid after removal of impurities, mix organic phase volume percentage be 25%P507,5%TBP,
70% sulfonated kerosene, soda soap rate are 65%, three-level counter-current extraction under room temperature.
Extraction conditions are as follows: comparing O/A is 1/1, and being stirred the time is 5min, and balance pH is 4 or so, and settling time is
5min, separates organic phase and water phase obtains extracting the nickel sulfate solution of miscellaneous organic phase and deep impurity-removing, the extraction yield point of Zn, Co, Ni
It Wei 100%, 98.46%, 6.37%.
Main component in liquid after purification: As0.001g/L, Ca0.0001g/L, Co0.001g/L, Cu0.0001g/L,
Fe0.0001g/L, Mg0.0001g/L, Ni54.317g/L, Zn0.0001g/L.Extract miscellaneous organic phase and first uses acid deionized water (pH
=3-4) by being washed compared to 1:1, only contain nickel, cobalt after washing in liquid, content is respectively 3.51g/L, 0.0021g/L,
Liquid returns to crude nickle sulphate dissolution after washing.
The miscellaneous organic phase of extraction is stripped again later, is stripped condition are as follows: O/A 1/1, sulfuric acid concentration 1mol/L, stirring
Incorporation time is 5min, settling time 5min, and two-stage back extraction is carried out under room temperature.Last organic phase after regeneration, returns again sharp
With.
(4) condensing crystallizing
Liquid carries out condensing crystallizing after purifying, and is detected, and liquid density 1.25g/mL, heating evaporation are concentrated into density before being concentrated
To be cooled to room temperature after 1.65g/mL, crystallize, dry after obtain emerald refined sulfuric acid nickel.
Its product quality is as shown in table 9 compared with national sector standard HG/T2824-2009 industrial sulphuric acid nickel.
The nickel sulfate product quality that 9 embodiment 3 of table is refining to obtain is compared with national sector standard HG/T2824-2009
As can be seen from Table 9, the nickel sulfate product quality that embodiment 3 obtains is higher than national standard " HG/T2824-2009 "
Technical requirements can be widely applied to plating and battery industry.
Claims (1)
1. a kind of refining methd of Copper making by-product crude nickle sulphate, it is characterised in that: the purification process steps are as follows:
Step 1:Na2S2O3Selective precipitation copper
The meter of 3:1 in mass ratio dissolves the crude nickle sulphate containing As, Ca, Co, Cu, Fe, Mg, Zn impurity with water, it is molten to obtain crude nickle sulphate
Liquid；
By Na2S2O3It is three times in the molar ratio computing of nickel sulfate, using excessive Na2S2O3It is heavy that selectivity is carried out to crude nickel sulfate solution
Shallow lake copper, the initial pH of solution precipitation reaction are 0.5, react 2h under the conditions of 85 DEG C of temperature of control；Product is carried out after reaction
Filtering, obtains copper removal nickel sulfate solution；Wherein the removal rate of Cu is 99.94%~100%, the loss late of nickel is 0.75%~
0.80%；
Step 2: a step precipitated iron, arsenic, calcium, magnesium
Under the conditions of 85 DEG C, hydrogen peroxide is added in the nickel sulfate solution of step 1 copper removal, oxidation reaction 20min；Oxidation terminates
Afterwards, excessive sodium fluoride is added, adjust solution pH value be 4.5, react 2h, followed by filter, obtain except iron, arsenic, calcium and
The nickel sulfate solution of magnesium, wherein the removal rate of iron, arsenic, calcium and magnesium be respectively 99.38%~99.97%, 97.83%~
99.85%, 97.64%~100%, 99.24%~100%；
Step 3: synergic solvent extraction deep impurity-removing
By 1:1 volume percentage, the mixed organic solvents that soda soap rate is 65% are added to the sulphur except iron, arsenic, calcium and magnesium
In sour nickel solution, it is stirred 5min, balance pH is 4, clarifies 5min, and three-level counter-current extraction under room temperature separates organic phase and water
Phase obtains the nickel sulfate solution for extracting miscellaneous organic phase and deep impurity-removing；Wherein zinc, cobalt, nickel extraction yield be respectively 100%,
98.18%~99.00%, 6.37%~7.82%；Three-level counter-current extraction condition are as follows: being stirred the time is 5min, balances pH
It is 4, settling time 5min；
By comparing for 1:1, the miscellaneous organic phase of extraction first is washed with the acid deionized water of pH=3-4, liquid returns to crude nickle sulphate after washing
In solution；It is stripped again with 1mol/L sulfuric acid solution to miscellaneous organic phase is extracted, is stirred 5min, clarify 5min；Under room temperature into
The back extraction of row two-stage, separates organic phase and water phase, organic phase is through regeneration；
The mixed organic solvents press volume percentage, P507 25%, TBP 5%, sulfonated kerosene 70%；
Step 4: condensing crystallizing
It is cooled to room temperature after the nickel sulfate solution of deep impurity-removing is concentrated, then crystallized, separation and drying, obtains purification sulphur
Sour nickel.
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| CN108751267A (en) * | 2018-06-30 | 2018-11-06 | 贵州中伟资源循环产业发展有限公司 | A kind of method of refined sulfuric acid nickel |
| CN109336194A (en) * | 2018-12-13 | 2019-02-15 | 怀化恒安石化有限公司 | A kind of process of the waste nitric acid nickel solution through removing chloride production nickel nitrate product |
| CN109913668A (en) * | 2019-03-20 | 2019-06-21 | 金川集团股份有限公司 | A method of from containing the organic middle recycling nickel of nickel load |
| CN109897955A (en) * | 2019-04-17 | 2019-06-18 | 江西铜业股份有限公司 | A kind of method of nickel sulfate solution deep purifying |
| CN111286604B (en) * | 2020-03-26 | 2021-11-05 | 江西江钨钴业有限公司 | Method for preparing and recycling valuable metal by using crude nickel hydroxide |
| CN111689530B (en) * | 2020-05-25 | 2023-08-22 | 荆门市格林美新材料有限公司 | Nickel sulfate solution production method and device |
| CN113666437B (en) | 2021-07-15 | 2022-11-15 | 广东邦普循环科技有限公司 | Method for preparing nickel sulfate from nickel-iron-copper alloy |
| CN114752782A (en) * | 2022-04-29 | 2022-07-15 | 紫金铜业有限公司 | Process suitable for refining and impurity removing of low-calcium magnesium crude nickel sulfate |
| CN114774711A (en) * | 2022-05-16 | 2022-07-22 | 安阳锦越新材料有限公司 | Method for extracting zinc and enriching cobalt from zinc and cobalt-containing solution |
| CN115490315B (en) * | 2022-08-31 | 2023-10-13 | 中国环境科学研究院 | Method for removing heavy metals and/or arsenic in water body |
| CN115650319B (en) * | 2022-10-22 | 2024-02-20 | 兰州大学 | Method for synchronously and efficiently removing copper and cobalt ions from nickel sulfate solution |
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| CN102021331B (en) * | 2010-12-11 | 2012-10-10 | 付春平 | Processing method for comprehensively recovering high manganese asbolite |
| CN102557153B (en) * | 2010-12-28 | 2015-06-03 | 上海轻工业研究所有限公司 | Method for removing calcium-magnesium impurities from nickel sulfate solution |
| CN102260795A (en) * | 2011-05-20 | 2011-11-30 | 四川省尼科国润新材料有限公司 | Method for directly producing electrolytic nickel by using copper nickel renewable resources |
| CN102627333B (en) * | 2012-04-24 | 2014-07-23 | 中南大学 | Method for refined nickel sulfate |
| CN103224259A (en) * | 2013-05-15 | 2013-07-31 | 大冶有色金属有限责任公司 | Method for refining crude nickel sulphate and recycling valuable metals |
| CN104617349A (en) * | 2014-12-09 | 2015-05-13 | 张国英 | Method for preparing nickel sulfate by utilizing waste Ni-NH battery cathode material |
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