Waste recovery process in production process of nickel-cobalt-manganese ternary precursor

A production process, nickel-cobalt-manganese technology, which is applied in the field of nickel-cobalt-manganese ternary precursor waste recycling, can solve the problems of strict environmental protection requirements and danger, and achieve the goal of reducing the cost of impurity removal, less control points, and reasonable wastewater Effect

Active Publication Date: 2018-06-22
GUANGDONG JIANA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, a sulfuric acid solution with a concentration of 98% is used in the reaction, which is dangerous during operation.
Some of these substances are highly toxic, and the environmental protection requirements are strict in the process of use, storage, and waste water and tail gas recovery.

Method used

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  • Waste recovery process in production process of nickel-cobalt-manganese ternary precursor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Based on the above description, the following specific examples are provided: For example, the main content of nickel-cobalt-manganese ternary precursor waste: Co 12.19%; Ni 31.48%; Mn 18.33%;

[0029] Step 1: Use sodium sulfide to precipitate and recover the valuable metals in the mother liquor of the nickel-cobalt-manganese ternary precursor production process. The content of metal sulfide after precipitation: Co 0.3%; Ni 12.66%; Mn 12.32%;

[0030] Step 2: Use 1.25mol / L sulfuric acid solution to carry out acid-dissolution leaching of the nickel-cobalt-manganese ternary precursor waste, the liquid-solid ratio is 5:1, the reaction temperature is 90°C, and the reaction time is 4h; the leaching residue is ready for use; the filtrate is sent as a product solution To the ternary precursor precipitation process to produce precursor products, the main content of nickel-cobalt-manganese solution: Co 19.85g / L; Ni 52.73g / L; Mn 0.004g / L; PH=1.13;

[0031] Step 3: Weigh the leach...

Embodiment 2

[0034] Provide the recovery process of nickel-cobalt-manganese ternary precursor waste such as the main content: Co 12.19%; Ni 31.48%; Mn 18.33%:

[0035] Step 1: Use sodium sulfide to precipitate and recover the valuable metals in the mother liquor of the nickel-cobalt-manganese ternary precursor production process. The content of metal sulfide after precipitation: Co 0.3%; Ni 12.66%; Mn 12.32%;

[0036] Step 2: Use 1.25mol / L sulfuric acid solution to carry out acid-dissolution leaching of the nickel-cobalt-manganese ternary precursor waste, the liquid-solid ratio is 5:1, the reaction temperature is 90°C, and the reaction time is 4h; the leaching residue is ready for use; the filtrate is sent as a product solution To the ternary precursor precipitation process to produce precursor products, the main content of nickel-cobalt-manganese solution: Co 19.85g / L; Ni 52.73g / L; Mn 0.004g / L; PH=1.13;

[0037]Step 3: Weigh the leaching slag and metal sulfide from step 2, and the weighin...

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Abstract

The invention discloses a waste recovery process in a production process of a nickel-cobalt-manganese ternary precursor used for recovering valuable metals, such as unqualified wastes which are not upto the product standard and ground recovered materials produced in the production process. Acid solution reaction is firstly carried out on a nickel-cobalt-manganese ternary precursor waste by usinga sulfuric acid solution to leach out acid-decomposable components in the waste; oxidation-reduction reaction is carried out on one part of acid-insoluble oxides in the nickel-cobalt-manganese ternaryprecursor waste by using the reductibility of valuable metal active sulfide recovered from precipitated mother liquor of the nickel-cobalt-manganese ternary precursor; and the waste is decomposed byfully utilizing the oxidation-reduction properties of two materials, so that the recovery target is achieved. The treatment process of combining waste residues with waste water in the production process is fully considered in the whole process reaction, so that the recovery rate of the valuable metals is improved while the production cost is reduced; the whole process is simple and control pointsare few; and other impurities are not introduced into the reaction process, so that the impurity removal process is reduced and the impurity removal cost is reduced.

Description

technical field [0001] The invention relates to the technical field of recycling waste materials of nickel-cobalt-manganese ternary precursors, in particular to a recycling process of waste materials in the production process of nickel-cobalt-manganese ternary precursors. Background technique [0002] Since 2014, my country has successively issued relevant support policies for new energy vehicles. As the most promising positive electrode material for power batteries in the contemporary era, nickel-cobalt lithium manganese oxide ternary material has the advantages of low cost, high specific capacity, good rate performance, and good safety performance. Nickel-cobalt-manganese hydroxide precursor is used as the front-end material of ternary cathode materials, and its market demand is also increasing year by year. Due to the unstable control of the co-precipitation process parameters in the production process, the resulting product does not meet the expected physical properties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54C01G53/00
CPCC01G53/00H01M10/54Y02W30/84
Inventor 张颖彭灿黄亚祥何玉娴
Owner GUANGDONG JIANA ENERGY TECH CO LTD
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