Electrolysis method for separating copper from cobalt and nickel in chloride ion ammoniacal system and application of products thereof

An electrolytic separation and chloride ion technology, which is applied in the material metallurgy of cobalt and nickel, and directly separates copper, can solve the problems of difficult large-scale industrial application, loss of nickel and cobalt, and large amount of washing water, and achieves good product consistency and low cost. , the effect of simple steps

Inactive Publication Date: 2014-11-05
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are four main methods for separating copper, cobalt and nickel: (1) replacement method, some large nickel refineries abroad mainly use nickel powder replacement method, which is not economical and has high cost; (2) solvent extraction method, multi-stage extraction can Deepen copper removal, which is difficult for large-scale industrial application; (3) ion exchange method, which has a large amount of washing water and is difficult to handle; (4) chemical precipitation method, which mainly uses hydrolysis or sulfide method to precipitate copper, but it is easy to cause nickel cobalt Loss

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  • Electrolysis method for separating copper from cobalt and nickel in chloride ion ammoniacal system and application of products thereof
  • Electrolysis method for separating copper from cobalt and nickel in chloride ion ammoniacal system and application of products thereof

Examples

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Embodiment 1

[0027] A method for electrolytically separating copper and cobalt-nickel in the chlorine ion ammoniacal system of the present invention, the method mainly adopts the electrolytic separation method, comprising the following steps:

[0028] (1) Preparation of electrolyte system: Add 21.31g of copper chloride, 2.95g of cobalt chloride and 1.49g of nickel chloride to the leaching solution of simulated ore samples containing copper, cobalt and nickel, and then add 18.52g of chlorine to the leaching solution Ammonium chloride and 29.22g of sodium chloride were mixed and dissolved, and finally 9.13ml of concentrated ammonia water was added to prepare a 500ml electrolyte system;

[0029] (2) Electrolytic separation: In the electrolyte system prepared above, graphite is used as the electrolytic anode, and stainless steel plate is used as the electrolytic cathode. The solution is degreased and then rinsed with distilled water before use; the electrolytic separation of the above electrol...

Embodiment 2

[0031] A method for electrolytically separating copper and cobalt-nickel in the chlorine ion ammoniacal system of the present invention, the method mainly adopts the electrolytic separation method, comprising the following steps:

[0032] (1) Preparation of electrolyte system: Add 21.31g of copper chloride, 5.90g of cobalt chloride and 2.98g of nickel chloride to the simulated ore sample leaching solution containing copper, cobalt and nickel, and then add 18.52g of chlorine to the leaching solution Ammonium chloride and 29.22g of sodium chloride were mixed and dissolved, and finally 18.26ml of concentrated ammonia water was added to prepare a 500ml electrolyte system;

[0033] (2) Electrolytic separation: In the electrolyte system prepared above, graphite is used as the electrolytic anode, and stainless steel plate is used as the electrolytic cathode. The solution is degreased and then rinsed with distilled water before use; the above electrolyte system is electrolytically sep...

Embodiment 3

[0035] A method for electrolytically separating copper and cobalt-nickel in the chlorine ion ammoniacal system of the present invention, the method mainly adopts the electrolytic separation method, comprising the following steps:

[0036] (1) Preparation of electrolyte system: Add 21.31g of copper chloride, 8.85g of cobalt chloride and 4.47g of nickel chloride to the leaching solution of simulated ore samples containing copper, cobalt and nickel, and then add 37.04g of chlorine to the leaching solution Ammonium chloride and 29.22g of sodium chloride were mixed and dissolved, and finally 18.26ml of concentrated ammonia water was added to prepare a 500ml electrolyte system;

[0037] (2) Electrolytic separation: In the electrolyte system prepared above, graphite is used as the electrolytic anode, and stainless steel plate is used as the electrolytic cathode. The solution is degreased and then rinsed with distilled water before use; the electrolytic separation of the above electro...

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Abstract

The invention discloses a method for separating copper from cobalt and nickel in a chloride ion ammoniacal system. The method mainly adopts an electrolysis separation technology, which comprises the following steps: dissolving a proper amount of at least one of copper salt, cobalt salt and nickel salt in a leached liquid of an analogue mineral sample containing copper, cobalt and nickel, adding ammonium chloride and a proper amount of active metal chloride into the solution, finally adding concentrated ammonia water so as to obtain an electrolytic system; carrying out electrolysis on the electrolytic system by taking graphite as the positive electrode and a stainless steel plate as the negative electrode, controlling the voltage to carry out electrolysis separation, and carrying out deposition to obtain the copper powder with high copper content and low nickel and cobalt content and electrolysis residual liquid with enriched nickel and cobalt. The electrolysis method has the advantages of simple and efficient steps, low cost, environmental friendliness, and good resource comprehensive utilization rate.

Description

technical field [0001] The invention relates to a method for separating, recovering and comprehensively utilizing copper-cobalt-nickel, in particular to a material-based metallurgical method for directly separating copper, cobalt-nickel from an ammoniacal system of copper-cobalt-nickel mixed liquid. Background technique [0002] Copper, cobalt, nickel, etc. are very important non-ferrous metals. They are special strategic materials for the development of high-tech industries. play an important role in construction. Among earth minerals, copper, cobalt, and nickel coexist in the form of their sulfides and oxides. With the decreasing grade of mineral resources, the traditional acid process can no longer meet the needs of copper and cobalt (nickel), and people gradually began to study the ammonia leaching process. [0003] During ammonia leaching of copper-cobalt-nickel ore, Cu, Co, Ni and ammonia form complexes [Me(NH 3 ) i ] 2+ into the solution, while Mn, Zn, Ca, Fe, Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C5/02
Inventor 王志兴李艳李新海郭华军彭文杰胡启阳
Owner CENT SOUTH UNIV
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