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A recycling process of waste materials in the production process of nickel-cobalt-manganese ternary precursor

A production process and precursor technology, which is applied in the field of nickel-cobalt-manganese ternary precursor waste recycling, can solve the problems of danger, strict environmental protection requirements, etc., achieve less control points, reduce the cost of impurity removal, and have strong operability Effect

Active Publication Date: 2020-07-31
GUANGDONG JIANA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A recycling process of waste materials in the 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 and 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 during the production of nickel, cobalt and manganese ternary precursors. After precipitation, the metal sulfide content: Co 0.3%; Ni 12.66%; Mn 12.32%;

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

[0031] Step 3: Weigh the leaching slag and metal sulfide in Step 2, the ratio is 1:1,...

Embodiment 2

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

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

[0036] Step 2: Use 1.25mol / L sulfuric acid solution to acid-dissolve nickel-cobalt-manganese ternary precursor waste, liquid-solid ratio 5:1, reaction temperature 90℃, reaction time 4h; leaching residue is ready for use; filtrate is sent as product solution To produce precursor products in the ternary precursor precipitation process, the main content of the nickel, cobalt and 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 in step 2, and the weighing ratio is that the molar ratio of the leaching slag to the metal sulfid...

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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 and utilization of nickel-cobalt-manganese ternary precursor waste, in particular to a recycling process of nickel-cobalt-manganese ternary precursor waste during the production process. Background technique [0002] Since 2014, my country has successively introduced supporting policies for new energy vehicles. As the most promising cathode material for power batteries in the contemporary era, nickel cobalt manganese lithium ternary material has the advantages of low cost, high specific capacity, good rate performance, and good safety performance. As the front-end material of ternary cathode materials, nickel-cobalt-manganese hydroxide precursors have also been increasing in market demand. Due to the unstable control of the co-precipitation process parameters in the production process, the product obtained does not meet the expected physical properties and chemical index requirements. The industry cal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54C01G53/00
CPCC01G53/00H01M10/54Y02W30/84
Inventor 吴理觉张晨文定强汪华郑江峰张颖秦汝勇黄亚祥何玉娴
Owner GUANGDONG JIANA ENERGY TECH CO LTD
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