Extraction decontamination method for industrial iron slag sulfuric acid leaching

An iron slag sulfuric acid and leaching solution technology, applied in the preparation of nickel sulfate, iron compounds, iron halide and other directions, can solve the problems of high consumption of electrolysis, small solution processing capacity, unsuitable for large-scale production, etc., and achieves high impurity removal rate , the effect of simple process flow
CN107200364AInactive Publication Date: 2017-09-26甘肃有色冶金职业技术学院
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
甘肃有色冶金职业技术学院
Publication Date
2017-09-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an extraction decontamination method for industrial iron slag sulfuric acid leaching. The extraction decontamination method comprises five procedures of sodium saponification, nickel saponification, extraction, washing and back extraction. P507 is adopted as an extraction agent, solvent oil or sulfonated kerosene is adopted as a diluent, on the basis of different combination properties of different metal ion extraction agents and the principle that the combination property of one metal with the extraction agents can be damaged by hydrochloric acid of different concentrations, target metals of Ni and Fe ions can be separated, metal ions such as Co, Cu, Pb, Zn, Ca and Mg in the leaching can be further removed, then the industrial iron slag sulfuric acid leaching can be deeply purified, and a nickel sulfate solution and a ferrous chloride solution with low impurity contents can be prepared. The extraction decontamination method disclosed by the invention is simple and convenient in process procedure and high in impurity removal rate, and the quality of the produced nickel sulfate solution and ferrous chloride solution meets quality requirements for producing nickel sulfate and ferric oxide products.
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Description

technical field

[0001] The invention belongs to the technical field of hydrometallurgy, relates to a large amount of industrial iron slag produced in the hydrometallurgy of non-ferrous metals nickel and cobalt, and specifically relates to a method for extracting and removing impurities from sulfuric acid leachate of industrial iron slag. Background technique

[0002] A large amount of industrial iron slag is produced in the nickel and cobalt hydrometallurgy process, and the industrial iron slag is stored in the slag yard, which not only occupies the space, but also has the hidden danger of polluting the soil. At the same time, the industrial iron slag is accompanied by a large amount of valuable nickel metal, resulting in a waste of resources.

[0003] In order to realize the recycling of resources, it is necessary to carry out technical research on the recycling of industrial iron slag; the best way to extract the valuable metals nickel and iron from solid matter is to leac...

Claims

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