Method for recovering and purifying nickel cobalt from manganese-containing waste material

A waste, nickel-cobalt technology, applied in the direction of chemical instruments and methods, manganese sulfate, nickel compounds, etc., can solve the problems of environmental safety hazards, large removal costs, waste of resources, etc., to reduce environmental safety hazards, reduce costs, The effect of improving the utilization rate
CN106904667AActive Publication Date: 2017-06-30GUIZHOU DALONG HUICHENG NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
GUIZHOU DALONG HUICHENG NEW MATERIAL CO LTD
Publication Date
2017-06-30

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Abstract

The invention relates to a method for recovering and purifying nickel cobalt from a manganese-containing waste material. The method comprises the following steps: the manganese-containing waste sulfide residues is subjected to slurrying, an acid solution and oxidant are added to the sulfide residues for being dissolved, and the acid-soluble waste residue and a filtrate are obtained; the filtrate is subjected to saponification by liquid caustic soda and then extraction by a nickel cobalt specific extractant to obtain a raffinate containing manganese; a nickel and cobalt-organic phase is extracted by dilute sulfuric acid to obtain a nickel cobalt manganese mixture; the nickel cobalt manganese mixture is subjected to impurities extraction with a dodecyl alkyl phosphate extraction agent after saponification and then is subjected to purification to obtain a nickel cobalt manganese refining mixture; according to the stoichiometric ratio of nickel cobalt manganese metals, the corresponding sulfate is supplemented, and a precursor nickel cobalt manganese hydroxide of lithium cobalt nickel manganese is synthesized by adding the liquid caustic soda. The method has the advantages of effective utilization of waste resources, low cost, good impurity removing effect, and small environmental risk.
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Description

technical field

[0001] The invention relates to a method for recovering and purifying nickel and cobalt, in particular to a method for recovering and purifying nickel and cobalt from waste slag. Background technique

[0002] In recent years, with the rise of the new energy material industry, nickel-cobalt-manganese-lithium cathode materials are increasingly becoming mainstream materials in the new energy industry due to their excellent comprehensive performance, and their output and market are rapidly expanding. At the same time, the demand for nickel-cobalt-manganese-manganese salt, the raw material of nickel-cobalt-manganese-lithium cathode material, is becoming increasingly tense. In view of the scarcity of nickel-cobalt resources, how to expand the source of nickel-cobalt raw materials is becoming an important issue that cannot be ignored in the new energy material industry.

[0003] At present, there are two main extraction routes for nickel and cobalt. One is extractio...

Claims

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