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Method for removing manganese in nickel cobalt hydroxide solution

A nickel-cobalt hydroxide and solution technology, which is applied in the direction of improving process efficiency, can solve the problems of low cost, high manganese content, and difficult removal, and achieve the effects of increasing temperature, increasing reaction speed, and reducing metal entrainment of manganese slag Effect

Active Publication Date: 2019-11-12
JINCHUAN GROUP LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the above-mentioned prior art, to provide a solution that can effectively solve the problems of high manganese content and difficult removal in the nickel-cobalt hydroxide solution, with low cost and good comprehensive benefits, and can effectively reduce the amount of manganese in the wet process. Removal method of manganese in nickel cobalt hydroxide solution solution of environmental protection pressure of waste slag storage

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  • Method for removing manganese in nickel cobalt hydroxide solution
  • Method for removing manganese in nickel cobalt hydroxide solution
  • Method for removing manganese in nickel cobalt hydroxide solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Table 1 example 1 used nickel hydroxide cobalt solution composition (g / L)

[0025] Ni mn co Fe 180.12 5.44 5.23 0.14

[0026] The specific implementation process: take a certain amount of nickel hydroxide cobalt hydrochloric acid solution, after heating up to 90 ° C, slowly and evenly pass into industrial sulfur dioxide gas (volume concentration 30%) of 1.3 times the theoretical amount, and the reaction time of ventilation is 4h. Nickel controls the pH of the reaction slurry to be 3.0; after the reaction is completed, inject compressed air into the feed liquid for 10 minutes; filter to obtain the manganese-precipitated liquid and manganese-precipitated slag. Table 2 shows the manganese removal liquid, manganese slag components and slag-calculated manganese removal rate.

[0027] Table 2 manganese removal example 1 analysis result

[0028]

[0029]

Embodiment 2

[0031] The used nickel hydroxide cobalt solution composition of table 3 example 2 (g / L)

[0032] Ni mn co Fe 187.27 6.33 5.72 0.23

[0033] The specific implementation process: take a certain amount of nickel hydroxide cobalt hydrochloric acid solution, after heating up to 105 ° C, slowly and evenly pass into industrial sulfur dioxide gas (volume concentration 30%) of 1.4 times the theoretical amount, and the reaction time of ventilation is 5h. Nickel controls the pH of the reaction slurry to be 3.5; after the reaction is completed, inject compressed air into the feed liquid for 12 minutes; filter to obtain the manganese-precipitated liquid and manganese-precipitated slag. Table 4 shows the manganese removal liquid, manganese slag components and slag-calculated manganese removal rate after manganese removal.

[0034] Table 4 manganese removal example 2 analytical results

[0035]

Embodiment 3

[0037] Table 5 example 3 used nickel hydroxide cobalt solution composition (g / L)

[0038] Ni mn co Fe 198.4 6.84 6.95 0.47

[0039] The specific implementation process: take a certain amount of nickel hydroxide cobalt hydrochloric acid solution, after heating up to 110 ° C, slowly and evenly pass into industrial sulfur dioxide gas (volume concentration 30%) of 1.5 times the theoretical amount, and the reaction time of ventilation is 6h. Nickel controls the pH of the reaction slurry to be 4.0; after the reaction is completed, inject compressed air into the feed liquid for 15 minutes; filter to obtain the manganese-precipitated liquid and manganese-precipitated slag. Table 6 shows the manganese removal liquid, manganese slag composition and slag manganese removal rate after manganese removal.

[0040] Table 6 manganese removal example 3 analytical results

[0041]

[0042]

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Abstract

The invention discloses a method for removing manganese in a nickel cobalt hydroxide solution, relates to a manganese removal method for an acid solution of nickel cobalt hydroxide in nickel cobalt hydrometallurgy. The method is characterized in that according to the removal process, the nickel cobalt hydroxide solution is heated, sulfur dioxide gas is led in, nickel carbonate is added to adjust the pH of reaction slurry, and precipitation and removal are carried out on the manganese in the nickel cobalt hydroxide solution. According to the method, the sulfur dioxide gas is used as a manganeseprecipitation reagent, the nickel carbonate is used for adjusting the pH of a reaction process solution, and air is compressed to remove free sulphur dioxide remaining in the slurry; and in the wholemanganese removing process, no new ions are introduced into the system, valuable metal contained in slag is low, the slag can be directly used as manganese raw materials to be exported, and the method is a green and efficient manganese removal process method.

Description

technical field [0001] A method for removing manganese in a nickel-cobalt hydroxide solution relates to a method for removing manganese in an acid solution of nickel-cobalt hydroxide in nickel-cobalt hydrometallurgy. Background technique [0002] In the nickel-cobalt metallurgical production process, the origin of ore minerals is usually far away from the production enterprise. In order to reduce ore transportation costs, when nickel-cobalt metallurgical production processes some laterite nickel ore, cobalt oxide ore and other ores, most of them build leaching-iron removal-precipitation nickel-cobalt wet processing production lines in the ore mineral origin. Through wet smelting, the nickel-cobalt hydroxide intermediate product is obtained, and then the nickel-cobalt hydroxide intermediate product is transported back for wet refining processing. [0003] At present, nickel cobalt hydroxide raw material has become the main raw material source of ternary battery material prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/06
CPCC22B7/006C22B23/04C22B23/06Y02P10/20
Inventor 李凤张鹏强程应峰李全赵国亮
Owner JINCHUAN GROUP LIMITED
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