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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

Active Publication Date: 2017-06-30
GUIZHOU DALONG HUICHENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two routes have obvious commonality, that is, chemical precipitation and extraction are required for impurity removal. When the ratio of material impurities to nickel and cobalt content is greater than 100, the above process will consume a lot of impurity removal costs, which will seriously reduce the economics of the extraction process.
[0004] At present, in the process of manganese ore processing, there are a large amount of solid waste produced by the removal of heavy metals. This type of waste is often treated as waste due to its low nickel and cobalt content and high impurity content. There is a huge waste of resources and potential environmental safety hazards.
In the existing technology, there are few precedents for the simultaneous recovery of nickel and cobalt in the resource utilization of manganese ore. If the existing manganese ore processing advantages can be effectively coordinated with the recovery and purification of nickel and cobalt, this will provide a new source of nickel and cobalt for the new energy industry. It is of great significance to open up new channels for the source of nickel and cobalt raw materials in this industry

Method used

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

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specific Embodiment approach

[0021] The specific implementation mode of above-mentioned technical scheme of the present invention is as follows:

[0022] a kind of like figure 1 Shown is the method for recovering and purifying nickel and cobalt from manganese-containing waste, specifically comprising the following steps:

[0023] (1) Acid soluble: use the vulcanized slag produced in the production process of manganese sulfate as raw material, the content of nickel in the solid waste of the vulcanized slag is 0.5% to 1.5%, the content of cobalt is 0.5% to 1%, and the content of manganese is 9% to 20%. , the iron content is 2% to 5%, and it also contains 10% to 20% of barium sulfate, 10% to 30% of silicon dioxide, and the content of some metal impurities is 1% to 5%. Slurry the above-mentioned sulfide slag with water according to the liquid-solid ratio of 1-0.5, add oxidant according to 1-2 times the molar number of sulfur radicals, add sulfuric acid during the process to stabilize the pH in the kettle in ...

Embodiment 1

[0033] a kind of like figure 1 Shown is the method for recovering and purifying nickel and cobalt from manganese-containing waste, specifically comprising the following steps:

[0034] (1) Acid soluble: take the vulcanized slag produced in the manganese sulfate production process as raw material, the nickel content is 0.5%, the cobalt content is 0.5%, the manganese content is 9%, the iron content is at 2%, and also contains 10% barium sulfate, 10% silicon dioxide, and 1% of some metal impurities. Slurry 100kg of the aforementioned sulfide slag with 50kg of tap water at a liquid-solid ratio of 0.5, add manganese dioxide as an oxidant according to 1 times the molar number of sulfur radicals, add sulfuric acid during the process to stabilize the pH in the kettle at 1.0, and the temperature of the reaction kettle during the acid dissolution process. 60°C, the stirring speed is 200-350r / min, and after the pH is stable, the stirring is continued for 2 hours, filtered to obtain the ...

Embodiment 2

[0042] a kind of like figure 1 Shown is the method for recovering and purifying nickel and cobalt from manganese-containing waste, specifically comprising the following steps:

[0043] (1) acid soluble: take the vulcanized slag produced in the manganese sulfate production process as raw material, the nickel content is 1.5%, the cobalt content is 1%, the manganese content is 20%, the iron content is at 5%, and also contains 20% of barium sulfate, 30% of silicon dioxide, and 2% of some metal impurities. Add 100kg of the aforementioned sulfide slag to slurry according to the liquid-solid ratio of 1, add 100kg of tap water, add the oxidant sodium chlorate according to 1.2 times the molar number of sulfur radicals, add sulfuric acid during the process to stabilize the pH in the kettle at 1.0, and the temperature of the reaction kettle during the acid dissolution process. 60°C, the stirring speed is 200-350r / min, and after the pH is stable, continue to stir for 2 hours, filter to o...

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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.

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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Application Information

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IPC IPC(8): C01G53/00C01G45/10
CPCC01G45/10C01G53/003C01G53/006C01P2006/80
Inventor 曾昭华谌红玉彭天剑刘务华姚金华
Owner GUIZHOU DALONG HUICHENG NEW MATERIAL CO LTD
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