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Treatment method of high-iron material containing nickel-cobalt-manganese hydroxide

A hydroxide and treatment method technology, applied in nickel compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of difficult treatment technology, cumbersome process, high production site requirements, etc., and achieve low treatment technology difficulty and high treatment equipment Simple, site-friendly effect

Inactive Publication Date: 2021-02-19
宜宾光原锂电材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The process of this method is cumbersome, the processing cycle is about 1 ton / week, the processing process is long, and the processing technology is relatively difficult
[0005] 2. The grading system of the extraction box equipment is complex, requiring high production sites, and the equipment generally occupies a large area
[0006] 3. The processing cost equivalent to cobalt is about 42,000 yuan / ton, and the processing cost is relatively high

Method used

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  • Treatment method of high-iron material containing nickel-cobalt-manganese hydroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Treat the nickel-cobalt-manganese hydroxide high-iron material as follows:

[0028] S1, confirmation 5m 3 The integrity of the dissolution kettle, the solution overflow conduit and piping accessories such as sulfuric acid and pure water are unobstructed.

[0029] S2, add about 1m to the kettle 3 The hot pure water (measured temperature 79 ℃), start stirring, slowly add 250kg nickel-cobalt-manganese hydroxide high-iron material from the still mouth and carry out slurrying.

[0030] S3. After slurrying, turn on the concentrated sulfuric acid injection pump, slowly inject concentrated sulfuric acid with a mass concentration of 45% at a rate of 200L / h, and observe the boiling state of the dissolution kettle to prevent the slurry from escaping until the slurry is completely dissolved.

[0031] S4. After dissolving, overflow the solution to the oxidation tank, keep the temperature at 70-90°C, add an appropriate amount of sodium hypochlorite, and continuously pipette an appr...

Embodiment 2

[0036] Treat the nickel-cobalt-manganese hydroxide high-iron material as follows:

[0037] S1, confirm 10m 3 The integrity of the dissolution kettle, the solution overflow conduit and piping accessories such as sulfuric acid and pure water are unobstructed.

[0038] S2, add about 3m to the kettle 3 The hot pure water (measured temperature 78 ℃), start stirring, slowly add 750kg nickel-cobalt-manganese hydroxide high-iron material from the still mouth and carry out slurrying.

[0039] S3. After slurrying, turn on the concentrated sulfuric acid injection pump, slowly inject concentrated sulfuric acid with a mass concentration of 45% at a rate of 200L / h, and observe the boiling state of the dissolution kettle to prevent the slurry from escaping until the slurry is completely dissolved.

[0040] S4. After dissolving, overflow the solution to the oxidation tank, keep the temperature at 70-90°C, add an appropriate amount of sodium hypochlorite, and continuously pipette an appropri...

Embodiment 3

[0045] Treat the nickel-cobalt-manganese hydroxide high-iron material as follows:

[0046] S1, confirm 10m 3 The integrity of the dissolution kettle, the solution overflow conduit and piping accessories such as sulfuric acid and pure water are unobstructed.

[0047] S2, add about 5m to the kettle 3The hot pure water (measured temperature 78 ℃), start stirring, slowly add 1250kg nickel-cobalt-manganese hydroxide high-iron material from the still mouth and carry out slurrying.

[0048] S3. After slurrying, turn on the concentrated sulfuric acid injection pump, slowly inject concentrated sulfuric acid with a mass concentration of 45% at a rate of 200L / h, and observe the boiling state of the dissolution kettle to prevent the slurry from escaping until the slurry is completely dissolved.

[0049] S4. After dissolving, overflow the solution to the oxidation tank, keep the temperature at 70-90°C, add an appropriate amount of sodium hypochlorite, and continuously pipette an appropri...

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Abstract

The invention discloses a treatment method of a high-iron material containing nickel-cobalt-manganese hydroxide. The treatment method comprises the following steps of: S1, preparing the high-iron material containing nickel-cobalt-manganese hydroxide into slurry; S2, injecting a sulfuric acid solution to dissolve the slurry; S3, adding sodium hypochlorite; S4, adding a sodium hydroxide solution; and S5, carrying out solid-liquid separation, wherein the filtrate is a nickel-cobalt-manganese sulfate raw material. The method has the advantages that: 1, the process is simple and convenient, the treatment period is about 1 ton / day, the treatment process is short, the treatment technical difficulty is low, and the method is suitable for being popularized and used in general nickel-cobalt-manganese hydroxide manufacturing enterprises; 2, the treatment equipment is simple, the use requirements can be met only by using a small PP material dissolving kettle, a filter press and a matched acid-basestorage tank, and the field applicability is high; 3, the treatment cost is about 12000yuan / ton in terms of cobalt, and the treatment cost is low; and 4, oil intake is not involved, and impurities capable of influencing the production and quality of a ternary precursor cannot be introduced into the system.

Description

technical field [0001] The invention relates to the field of lithium ion battery production, especially the production technology of nickel-cobalt-manganese ternary precursor. Background technique [0002] The magnetic foreign matter index of nickel-cobalt-manganese hydroxide products mainly involves product safety, and its sources mainly come from three sources: raw and auxiliary materials, production equipment and operating environment. In order to control the content of magnetic foreign matter in the product, demagnetization equipment will be added in the back-end process of production. When the material passes through the demagnetization equipment, the magnetic material will be absorbed and separated by the demagnetization equipment. Because most of the material is normal material containing nickel-cobalt-manganese hydroxide, followed by magnetic material with high iron content, it is called nickel-cobalt-manganese hydroxide high-iron material. [0003] With the expansi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C04B7/24H01M4/50H01M4/52H01M10/0525
CPCC01G53/006C04B7/24H01M4/50H01M4/52H01M10/0525Y02P40/10Y02E60/10
Inventor 祝秋花左美华王启军王东
Owner 宜宾光原锂电材料有限公司
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