Method of removing impurities out of nickel chloride leachate

Abstract

The invention discloses a method of removing impurities out of nickel chloride leachate. The method comprises the following steps: in a sequence of extracting metals by using an extraction agent p-507, adding sulfonated kerosene serving as a diluent into p-507; then, sequentially reacting with a NaOH solution and a nickel chloride solution or a nickel sulfate solution; after reaction, carrying out phase separation; and finally, obtaining the extraction agent with the organic nickel load being 14.09-14.43g / L. According to the method disclosed by the invention, p-507 is converted into the extraction agent with the organic nickel load being 14.09-14.43g / L. The extraction agent can further separate impurities such as cobalt, copper, zinc, manganese, calcium and magnesium from the nickel chloride leachate. The nickel chloride extracted by the extraction agent satisfies the production requirements of electroplating-grade nickel chloride products. The method disclosed by the invention is simple, reliable and strongly operable in process and has good removal effect on impurities such as cobalt, copper, zinc, manganese, calcium and magnesium, does not introduce other impurities, expands a novel process of producing electroplating-grade nickel chloride products by nickel cobalt hydroxide raw materials, and has a good economic value.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and relates to a method for removing impurities in a nickel chloride leaching solution. Background technique [0002] Nickel Chloride, NiCl 4 ·6H 2 O is mainly used in electroplating, as an anode activator in rapid nickel plating, as an ammonia absorbent in industry or gas masks, and in the manufacture of catalysts, chemical reagents, preservatives, dry batteries, etc., among which the electroplating industry uses the largest amount. With the rapid development of my country's economy, it has driven the strong demand for high-grade electroplating products in the electronics, electrical and automotive industries, and the application of high-quality nickel chloride in the electroplating industry has become increasingly widespread. Regarding the removal of impurity ions such as cobalt, manganese, copper and zinc in nickel chloride solution, the current general method is to use N ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existing N 235 Insufficient extraction technology solves the problem that the separation degree of nickel ions and impurity metal ions cannot reach the electroplating grade nickel chloride chemical industry standard (HG / T2771-2009), and provides a hydrochloric acid or chlorine gas leaching solution for removing nickel hydroxide and cobalt raw materials Removal method of various impurities such as cobalt, copper, zinc, manganese, calcium, magnesium, etc.