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Nickel-cobalt separation method of nickel chloride solution

A separation method and nickel chloride technology, applied in the direction of improving process efficiency, etc., can solve the problems of continuous and stable operation of the production line affecting the separation effect of N235 nickel and cobalt, poor fluidity, difficulty in two-phase separation, etc., so as to ensure long-term stable operation, Improve the quality of extraction products and solve the effect of poor two-phase separation

Pending Publication Date: 2022-02-18
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0004] Based on the above technical problems, the present invention provides a method for separating nickel and cobalt from nickel chloride solution, which solves the problem that a large amount of nickel chloride crystals will be produced in the extraction section when the existing solvent extraction method uses N235 as the extraction agent to separate and recover nickel and cobalt. , resulting in difficult two-phase separation and poor fluidity, affecting the separation effect of N235 nickel-cobalt and the continuous and stable operation of the production line

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  • Nickel-cobalt separation method of nickel chloride solution
  • Nickel-cobalt separation method of nickel chloride solution

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Embodiment Construction

[0025] In order to make the purpose, 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 in conjunction with the drawings of the embodiments of the present application. Apparently, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the described embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the application shall have the ordinary meanings understood by those skilled in the art to which the application belongs. "First", "second" and similar words used in this application do not indicate any order, quantity or importance, but are o...

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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. The method comprises the following steps: uniformly mixing 20% of N235, 14% of isooctanol and 66% 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, carrying out nickel-cobalt separation through multi-stage counter-current extraction, and acquiring raffinate and a loaded organic phase, wherein the raffinate is the pure nickel chloride solution. The method solves the problems that when an existing solvent extraction method takes N235 as an extraction agent for nickel-cobalt separation and recovery, a large amount of nickel chloride crystals are generated in an extraction section, two-phase separation is difficult, fluidity is poor, and the N235 nickel-cobalt separation effect and continuous and stable operation of a production line are affected.

Description

technical field [0001] The invention relates to the technical field of wet nonferrous metallurgy extraction, in particular to a method for separating nickel and cobalt from a nickel chloride solution. Background technique [0002] At present, the solvent extraction method has the advantages of high selectivity, high recovery rate, simple process, continuous operation and easy automation in the application of nickel and cobalt separation and recovery, and is widely used and mature. Compared with chemical precipitation, ion exchange and The adsorption method has a higher depth of impurity removal. [0003] In the 1970s, the Norwegian Eagle Bridge Company Kristiansund used the chloride leaching-N235 extraction-electrowinning process to produce high-quality electrolytic nickel, while in the early domestic Chengdu electric smelting plant and Chongqing smelting plant both used N235 solvent extraction to separate nickel and cobalt. Therefore, the amine extractant N235 has attracte...

Claims

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Application Information

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IPC IPC(8): C22B23/00C22B3/28
CPCC22B23/00C22B3/22Y02P10/20
Inventor 吉永亮陈胜利贺景洲辛怀达郭胜旭周通卢建波张军赵明郁
Owner JINCHUAN GROUP LIMITED
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