CN114058877A - Nickel-cobalt separation method of nickel chloride solution - Google Patents
Nickel-cobalt separation method of nickel chloride solution Download PDFInfo
- Publication number
- CN114058877A CN114058877A CN202111308328.6A CN202111308328A CN114058877A CN 114058877 A CN114058877 A CN 114058877A CN 202111308328 A CN202111308328 A CN 202111308328A CN 114058877 A CN114058877 A CN 114058877A
- Authority
- CN
- China
- Prior art keywords
- nickel
- organic phase
- washing
- chloride solution
- cobalt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 title claims abstract description 44
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 title claims abstract description 28
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000012074 organic phase Substances 0.000 claims abstract description 62
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 49
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000000605 extraction Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 18
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003350 kerosene Substances 0.000 claims abstract description 8
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 7
- 239000010941 cobalt Substances 0.000 claims abstract description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012071 phase Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 47
- 239000000243 solution Substances 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000020477 pH reduction Effects 0.000 claims description 9
- 238000002386 leaching Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 229910052598 goethite Inorganic materials 0.000 claims description 4
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000013078 crystal Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000638 solvent extraction Methods 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 229910017061 Fe Co Inorganic materials 0.000 description 7
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of wet nonferrous metallurgy extraction, and discloses a nickel-cobalt separation method of a nickel chloride solution, which comprises the following steps: evenly mixing N235, isooctanol and sulfonated kerosene according to the proportion of 20 percent of N235, 14 percent of isooctanol and 66 percent of sulfonated kerosene to obtain an extracted organic phase; acidizing the extracted organic phase by using 5mol/L hydrochloric acid to obtain an acidized organic phase; and adding the acidified organic phase into a nickel chloride solution, and performing nickel-cobalt separation through multi-stage countercurrent extraction to obtain a raffinate and a loaded organic phase, wherein the raffinate is a pure nickel chloride solution. The invention solves the problems that when the existing solvent extraction method uses N235 as an extracting agent to separate and recover nickel and cobalt, a large amount of nickel chloride crystals can be generated in an extraction section, so that two phases are difficult to separate and the fluidity is poor, and the separation effect of the N235 nickel and cobalt and the continuous and stable operation of a production line are influenced.
Description
Technical Field
The invention relates to the technical field of wet nonferrous metallurgy extraction, in particular to a nickel-cobalt separation method of a nickel chloride solution.
Background
At present, the solvent extraction method has the advantages of high selectivity, high recovery rate, simple flow, continuous operation, easy realization of automation and the like in the application of nickel and cobalt separation and recovery, is widely and mature in application, and has higher impurity removal depth compared with a chemical precipitation method, an ion exchange method and an adsorption method.
In the 70 th century of 20 th century, Clistian Anson of Norwegian eagle bridge company utilized the process of chlorination leaching-N235 extraction-electrodeposition to produce high-quality electronickel, while in early-stage domestic Chengdu electrometallurgy plants and Chongqing smelteries, N235 solvent extraction was used for nickel-cobalt separation, so amine extractant N235 received more and more attention of researchers. However, it is subsequently found that when the nickel and cobalt separation is performed in a chlorination system by using an N235 solvent, a large amount of nickel chloride crystals are generated in an extraction section, which results in poor two-phase separation effect, poor fluidity, blockage of an extraction tank and a pipeline, and influence on normal production and product quality.
Disclosure of Invention
Based on the technical problems, the invention provides a nickel-cobalt separation method of a nickel chloride solution, which solves the problems that when the nickel-cobalt separation and recovery are carried out by taking N235 as an extracting agent in the conventional solvent extraction method, a large amount of nickel chloride crystals are generated in an extraction section, so that the two phases are difficult to separate and the fluidity is poor, and the separation effect of the N235 nickel-cobalt and the continuous and stable operation of a production line are influenced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a nickel-cobalt separation method of a nickel chloride solution comprises the following steps:
evenly mixing N235, isooctanol and sulfonated kerosene according to the proportion of 20 percent of N235, 14 percent of isooctanol and 66 percent of sulfonated kerosene to obtain an extracted organic phase;
acidizing the extracted organic phase by using 5mol/L hydrochloric acid to obtain an acidized organic phase;
and adding the acidified organic phase into a nickel chloride solution, and performing nickel-cobalt separation through multi-stage countercurrent extraction to obtain raffinate and a loaded organic phase, wherein the raffinate is a pure nickel chloride solution.
And further washing the loaded organic phase, and returning the washed regenerated organic phase to the multistage countercurrent extraction section for continuous nickel-cobalt separation.
Further, the washing includes:
washing the loaded organic phase by nickel-washing acid to obtain first washing liquid and a first washing organic phase, wherein the nickel-washing acid is 2mol/L hydrochloric acid;
washing the first washed organic phase by cobalt-washing acid to obtain second washed liquid and a second washed organic phase, wherein the cobalt-washing acid is 0.2-0.4mol/L hydrochloric acid;
and washing the second washed organic phase by using iron washing liquid to obtain third washed liquid and a regenerated organic phase, wherein the iron washing liquid is alkaline solution with the pH value of 9-10.
Further, nickel acid washing is combined into a multi-stage countercurrent extraction section.
Further, the flow ratio of the loaded organic phase and the nickel-washing acid is 10: 1.
Further, the ratio of the extraction organic phase to the hydrochloric acid flow in the acidification treatment is 15: 1 (O/A), and Cl-≥270g/L。
Further, after the acidification treatment, the water phase is separated to obtain an acidified organic phase.
Further, chloridizing and leaching the nickel concentrate to obtain a leaching solution; and (3) performing displacement copper precipitation and goethite iron removal on the leachate to obtain a nickel chloride solution.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a method for treating nickel chloride crystals generated in an N235 nickel-cobalt separation and extraction section in a nickel chloride solution, which effectively solves the problems of poor two-phase separation effect and poor fluidity of the extraction section and easy blockage of an extraction box and a pipeline by the nickel chloride crystals, ensures the long-period stable operation of an extraction production line, and stably improves the quality of an extracted product.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. Wherein:
FIG. 1 is a schematic flow chart of a nickel-cobalt separation method of a nickel chloride solution.
FIG. 2 is a schematic diagram of a washing process.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Referring to fig. 1, in some embodiments, a method for separating nickel and cobalt from a nickel chloride solution includes:
s101, uniformly mixing N235, isooctanol and sulfonated kerosene in a ratio of 20% of N235, 14% of isooctanol and 66% of sulfonated kerosene to obtain an extracted organic phase;
s102, acidifying the extracted organic phase by using 5mol/L hydrochloric acid to obtain an acidified organic phase;
the experimental results in table 2 show that the problem of nickel chloride crystallization can be solved by acidifying the N235 organic phase with hydrochloric acid, and when the hydrochloric acid concentration is 3.0-5.0mol/L, part of nickel chloride crystals still exist, which causes poor solution fluidity; when the concentration of hydrochloric acid is more than 5.0mol/L, although the nickel chloride crystals completely disappear, the pH value of raffinate is reduced to be below 2.0, and a large amount of alkali is needed for neutralization in the subsequent oxidation lead removal process; when the concentration of the hydrochloric acid is 5mol/L, all nickel chloride crystals can be eliminated, the pH value of the raffinate is relatively high, and the consumption of the subsequent alkali production is relatively low.
TABLE 1 chemical composition (g/L) of raffinate after acidification of the organic phase with hydrochloric acid of different concentrations
| HCl | Ni | Cu | Fe | Co | Zn | pH |
| 3.0 | 149.12 | 0.0082 | 0.0058 | 0.0066 | 0.00051 | 3.0-3.5 |
| 4.0 | 157.35 | 0.0055 | 0.0035 | 0.0042 | 0.00038 | 2.5-3.0 |
| 5.0 | 177.58 | 0.0021 | 0.0020 | 0.0018 | 0.00012 | 2.0-2.5 |
| 6.0 | 178.98 | 0.0028 | 0.0004 | 0.0025 | 0.00018 | 1.0-2.0 |
Preferably, the ratio of the extracted organic phase to the hydrochloric acid in the acidification treatment is 15: 1O/A, and Cl-≥270g/L。
The experimental results in table 2 show that the problem of nickel chloride crystallization can be solved by acidifying the N235 organic phase with 5mol/L hydrochloric acid, and the influence of the flow ratio of the N235 organic phase to hydrochloric acid on nickel chloride crystallization is examined, when the ratio of N235 organic phase to HCl is lower than 15: 1, nickel chloride crystallization completely disappears, but the pH of raffinate is lower than 2.0, and a large amount of alkali is consumed in the subsequent oxidation lead removal process for neutralization, so that the production cost is increased.
TABLE 2 chemical composition (g/L) of raffinate at different ratios of organic phase and hydrochloric acid flow
| Organic phase N235: HCl | Ni | Cu | Fe | Co | Zn | pH |
| 1.5：1 | 179.55 | 0.0022 | 0.0028 | 0.0038 | 0.00015 | ＜1.0 |
| 3：1 | 167.55 | 0.0015 | 0.0019 | 0.0022 | 0.00014 | ＜1.5 |
| 6：1 | 177.58 | 0.0021 | 0.0020 | 0.0018 | 0.00012 | 1.5-2.0 |
| 15：1 | 183.91 | 0.0018 | 0.0004 | 0.0021 | 0.00029 | 2.0-2.5 |
Preferably, the acidified organic phase is obtained by separating the aqueous phase after the acidification treatment. The water phase is separated after acidification treatment, so that the hydrochloric acid can be prevented from entering a multi-stage countercurrent extraction section.
S103, adding the acidified organic phase into a nickel chloride solution, and performing nickel-cobalt separation through multi-stage countercurrent extraction to obtain a raffinate and a loaded organic phase, wherein the raffinate is a pure nickel chloride solution.
Specifically, the method for obtaining the nickel chloride solution comprises the following steps: chloridizing and leaching the nickel concentrate to obtain a leaching solution; and (3) performing displacement copper precipitation and goethite iron removal on the leachate to obtain a nickel chloride solution.
Wherein the nickel chloride solution is selectively leached by chlorine under the conditions of oxidation-reduction potential of 460mV-510mV and reaction temperature of 100-115 ℃, and the nickel chloride solution is used as a pre-extraction solution for subsequent N235 extraction after displacement copper precipitation and goethite iron removal. Experiments show that the basic contents of Cu, Fe, Co, Zn, Ca, Mg and Mn in the pre-extraction solution are shown in Table 3.
TABLE 3 Pre-extraction liquid chemical ingredient Table (g/L)
| Ni | Cu | Fe | Co | Zn | As | Ca | Mg | Mn | Cl- |
| 227.19 | 0.071 | 0.0026 | 2.24 | 0.0046 | 0.00017 | 0.62 | 0.34 | 0.11 | 354.16 |
Wherein, the extraction mechanism of N235 is as follows:
R3N+HCl＝R3NHCl
nR3NHCl+[MeCl4]n-＝(R3NH)nMeCl4+nCl-
wherein Me represents a metal ion including Cu2+、Fe3+、Co2+And Zn2+And (4) plasma metal ions.
The extraction mechanism of N235 shows that the extraction is carried out after the acidification treatment of N235, which not only can improve the extraction capability of N235, but also can inhibit the generation of nickel chloride crystals.
Referring to fig. 2, in some embodiments, the method further comprises washing the loaded organic phase, and returning the washed regenerated organic phase to the multi-stage countercurrent extraction section for nickel and cobalt separation.
Specifically, the washing includes:
s201, washing the loaded organic phase by nickel-washing acid to obtain first washing liquid and a first washing organic phase, wherein the nickel-washing acid is 2mol/L hydrochloric acid;
among them, it was found from the experiment that the chemical composition of the first post-wash solution is shown in table 4.
TABLE 4 chemical composition of first wash solution
| Element(s) | Ni | Cu | Fe | Co | Zn |
| Concentration (g/L) | 10.25 | 0.031 | 0.0059 | 0.088 | 0.001 |
Preferably, the nickel acid wash is incorporated into a multistage countercurrent extraction stage.
Wherein, will wash nickel acid and merge into N235 extraction section and can further solve the crystallization problem of nickel chloride solution, still can further improve nickel cobalt separation effect simultaneously, but can influence follow-up production to a certain extent.
Preferably, the flow ratio of the loaded organic phase and the nickel-washing acid is 10: 1.
From the experimental results in table 5, it can be seen that after the nickel-washing acid is incorporated into the multi-stage countercurrent extraction stage, the pH of the raffinate is reduced to 1.0-1.5 for the first time, and a large amount of alkali is consumed to increase the pH in the subsequent lead removal process by oxidation under the high pH (pH3.8-4.0) condition; the second problem is that the nickel ion concentration in the diluted raffinate is poor in the subsequent electrodeposition process, and the quality and physical appearance of the electrodeposited nickel product are affected.
TABLE 5 raffinate chemistry (g/L) at different ratios of loaded organic phase to nickel wash acid flow
| Loading an organic phase: HCl | Ni | Cu | Fe | Co | Zn | pH |
| 8：1 | 146.21 | 0.0052 | 0.0073 | 0.012 | 0.00055 | 1.2-1.8 |
| 9：1 | 138.46 | 0.0033 | 0.0048 | 0.0071 | 0.00028 | 1.0-1.5 |
| 10：1 | 120.11 | 0.0028 | 0.0039 | 0.0066 | 0.00020 | 1.0-1.5 |
| 11：1 | 118.35 | 0.0031 | 0.0040 | 0.0056 | 0.00014 | ＜1.0 |
S202, washing the first washed organic phase by using cobalt-washing acid to obtain second washed liquid and a second washed organic phase, wherein the cobalt-washing acid is 0.2-0.4mol/L hydrochloric acid;
it was found from the experiment that the chemical composition of the second post-wash solution is shown in table 6.
TABLE 6 chemical composition of the second wash solution
| Element(s) | Ni | Cu | Fe | Co | Zn |
| Concentration (g/L) | 1.58 | 0.58 | 0.0015 | 53.6 | 0.005 |
And S203, washing the second washed organic phase by using iron washing liquid to obtain third washed liquid and a regenerated organic phase, wherein the iron washing liquid is alkaline solution with the pH value of 9-10.
Wherein, the third washing liquid is waste liquid and is not reused.
It was found from the experiment that the chemical composition of the third post-wash solution is shown in Table 7.
TABLE 7 chemical composition of the third wash liquid
| Element(s) | Ni | Cu | Fe | Co | Zn |
| Concentration (g/L) | 0.21 | 0.52 | 0.66 | 0.12 | 0.002 |
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only used for clearly illustrating the verification process of the invention and are not used for limiting the patent protection scope of the invention, which is defined by the claims, and all the equivalent structural changes made by using the contents of the description and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A nickel-cobalt separation method of a nickel chloride solution is characterized by comprising the following steps:
evenly mixing N235, isooctanol and sulfonated kerosene according to the proportion of 20 percent of N235, 14 percent of isooctanol and 66 percent of sulfonated kerosene to obtain an extracted organic phase;
acidizing the extracted organic phase by using 5mol/L hydrochloric acid to obtain an acidized organic phase;
and adding the acidified organic phase into a nickel chloride solution, and performing nickel-cobalt separation through multi-stage countercurrent extraction to obtain a raffinate and a loaded organic phase, wherein the raffinate is a pure nickel chloride solution.
2. The method for separating nickel and cobalt from a nickel chloride solution according to claim 1, further comprising:
and washing the loaded organic phase, and returning the washed regenerated organic phase to the multistage countercurrent extraction section for continuous nickel-cobalt separation.
3. The method of claim 2, wherein the washing comprises:
washing the loaded organic phase by using nickel washing acid to obtain first washing liquid and a first washing organic phase, wherein the nickel washing acid is 2mol/L hydrochloric acid;
washing the first washed organic phase by cobalt-washing acid to obtain second washed liquid and a second washed organic phase, wherein the cobalt-washing acid is 0.2-0.4mol/L hydrochloric acid;
and washing the second washed organic phase by using iron washing liquid to obtain third washed liquid and a regenerated organic phase, wherein the iron washing liquid is alkaline solution with the pH value of 9-10.
4. The nickel-cobalt separation method of nickel chloride solution according to claim 3, characterized in that:
and the nickel washing acid is incorporated into a multi-stage countercurrent extraction section.
5. The nickel-cobalt separation method of the nickel chloride solution according to claim 3, characterized in that:
the flow ratio of the loaded organic phase and the nickel-washing acid is 10: 1.
6. The nickel-cobalt separation method of the nickel chloride solution according to claim 1, characterized in that:
the flow ratio of the extraction organic phase to the hydrochloric acid in the acidification treatment is 15: 1, and Cl is adopted-≥270g/L。
7. The nickel-cobalt separation method of the nickel chloride solution according to claim 1, characterized in that:
and after the acidification treatment, separating the water phase to obtain an acidified organic phase.
8. The nickel-cobalt separation method of the nickel chloride solution according to claim 1, characterized in that:
chloridizing and leaching the nickel concentrate to obtain a leaching solution;
and (3) performing displacement copper precipitation and goethite iron removal on the leachate to obtain a nickel chloride solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308328.6A CN114058877A (en) | 2021-11-05 | 2021-11-05 | Nickel-cobalt separation method of nickel chloride solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308328.6A CN114058877A (en) | 2021-11-05 | 2021-11-05 | Nickel-cobalt separation method of nickel chloride solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114058877A true CN114058877A (en) | 2022-02-18 |
Family
ID=80274179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308328.6A Pending CN114058877A (en) | 2021-11-05 | 2021-11-05 | Nickel-cobalt separation method of nickel chloride solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114058877A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1284737A (en) * | 1961-02-15 | 1962-02-16 | Falconbridge Nickel Mines Ltd | Nickel recovery |
| CA2580120A1 (en) * | 2004-09-13 | 2006-03-23 | Canopean Pty. Ltd | Process for preparing nickel loaded organic extractant solution |
| CN102181666A (en) * | 2011-05-06 | 2011-09-14 | 广西银亿科技矿冶有限公司 | Method for treating red soil nickel ore leaching liquid |
| CN104073633A (en) * | 2014-06-12 | 2014-10-01 | 金川集团股份有限公司 | Purification method of cobalt nickel hydroxide hydrochloric acid leaching solution |
| CN105297023A (en) * | 2014-07-17 | 2016-02-03 | 青岛百键城环保科技有限公司 | Processing method for waste etching solution containing nickel |
| CN108660324A (en) * | 2018-05-21 | 2018-10-16 | 金川集团股份有限公司 | A method of extracting nickel, cobalt, copper from monel chloridizing leach solution |
-
2021
- 2021-11-05 CN CN202111308328.6A patent/CN114058877A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1284737A (en) * | 1961-02-15 | 1962-02-16 | Falconbridge Nickel Mines Ltd | Nickel recovery |
| CA2580120A1 (en) * | 2004-09-13 | 2006-03-23 | Canopean Pty. Ltd | Process for preparing nickel loaded organic extractant solution |
| CN102181666A (en) * | 2011-05-06 | 2011-09-14 | 广西银亿科技矿冶有限公司 | Method for treating red soil nickel ore leaching liquid |
| CN104073633A (en) * | 2014-06-12 | 2014-10-01 | 金川集团股份有限公司 | Purification method of cobalt nickel hydroxide hydrochloric acid leaching solution |
| CN105297023A (en) * | 2014-07-17 | 2016-02-03 | 青岛百键城环保科技有限公司 | Processing method for waste etching solution containing nickel |
| CN108660324A (en) * | 2018-05-21 | 2018-10-16 | 金川集团股份有限公司 | A method of extracting nickel, cobalt, copper from monel chloridizing leach solution |
Non-Patent Citations (1)
| Title |
|---|
| 汪家鼎等: "《溶剂萃取手册》", 31 January 2001, 化学工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11459636B2 (en) | Method and system for comprehensive recovery and utilization of copper-nickel sulfide ore | |
| CN104962743B (en) | Method for selectively extracting and recycling gallium, germanium and indium from sulfuric acid leach liquid of zinc displacement residues | |
| JP5800254B2 (en) | Method for producing cobalt sulfate | |
| JPS5919976B2 (en) | Method for extracting metals, especially nickel and copper, contained in nodules on the deep sea bed | |
| JP6336469B2 (en) | Method for producing scandium-containing solid material with high scandium content | |
| CN106636652B (en) | The technique of efficient green Recover palladium in a kind of parting liquid from silver anode slime | |
| CN105200245A (en) | Method for efficiently separating tungsten and molybdenum | |
| CN102443700B (en) | Method for recovering nickel from nickel-laterite leaching solution and device | |
| FI126210B (en) | Process for the recovery of copper and zinc | |
| CN113186405A (en) | Comprehensive treatment and recovery method for high-chlorine zinc-manganese-copper-cobalt material | |
| CN115141940B (en) | Method for separating zinc and cadmium from sulfuric acid medium | |
| CN113502394A (en) | Method for recovering cobalt or nickel intermediate product | |
| CN110760679A (en) | Method for recovering palladium from silver electrolyte purification slag | |
| CN106755994A (en) | A kind of production method for comprehensively utilizing zinc cobalt raw material high | |
| CN116143174B (en) | Method for preparing ammonium paratungstate by scheelite short process | |
| CN114058877A (en) | Nickel-cobalt separation method of nickel chloride solution | |
| CN114058845A (en) | Method for combined extraction in nickel chloride solution by utilizing P204 and N235 | |
| CN103805782A (en) | Purification method of nickel-containing solution | |
| CN114058876B (en) | Method for extracting cobalt from cobalt-iron slag | |
| CN110484747B (en) | Process for selectively extracting palladium from crude silver | |
| CN114774695A (en) | Method for extracting precious metals from silver anode mud pickle liquor | |
| CN103805783A (en) | Method for purifying nickel-containing solution | |
| CN114657387A (en) | Method for recovering copper by synergistic treatment of acidic etching waste liquid and zinc-containing copper dust | |
| CN108754142B (en) | Method for separating bismuth and iron and producing pure bismuth hydroxide by extraction-ammonia decomposition in bismuth and iron mixed solution | |
| CN105441689A (en) | Method for preparing high-purity gold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220218 |
|
| RJ01 | Rejection of invention patent application after publication |