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Method for removing calcium and magnesium ions in nickel-cobalt-manganese solution and method for recycling nickel-cobalt-manganese ternary waste

A calcium-magnesium ion, nickel-cobalt-manganese technology, which is applied in the field of recycling nickel-cobalt-manganese ternary waste, can solve the problems of low purification precision and low removal efficiency, and achieve low loss of valuable metals, low cost, and high comprehensive yield. Effect

Active Publication Date: 2022-04-19
贵州中伟资源循环产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current method has the problems of low removal efficiency and low purification precision.

Method used

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  • Method for removing calcium and magnesium ions in nickel-cobalt-manganese solution and method for recycling nickel-cobalt-manganese ternary waste
  • Method for removing calcium and magnesium ions in nickel-cobalt-manganese solution and method for recycling nickel-cobalt-manganese ternary waste
  • Method for removing calcium and magnesium ions in nickel-cobalt-manganese solution and method for recycling nickel-cobalt-manganese ternary waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Dissolve the nickel-cobalt-manganese ternary waste in sulfuric acid, then add hydrogen peroxide and sodium carbonate solution, oxidize and precipitate, and then filter to obtain the nickel-cobalt-manganese solution, whose composition is shown in Table 1 below:

[0057] Table 1 Chemical composition table of nickel cobalt manganese solution

[0058]

[0059] At 90°C, NaF was added at 1 times the sum of the molar equivalents of calcium and magnesium impurities, and the first filtrate was filtered and separated after reacting for 1.5 hours. The chemical composition of the first filtrate is shown in Table 2 below:

[0060] Table 2 The chemical composition of the first filtrate

[0061]

[0062] At 90°C, add NH in an amount 15 times the sum of molar equivalents of calcium and magnesium impurities 4 F, the target solution obtained by filtering and separating after reacting for 2h, the chemical composition of the target solution is shown in Table 3 below:

[0063] Table...

Embodiment 2

[0066] Dissolve the nickel-cobalt-manganese ternary waste in sulfuric acid, then add hydrogen peroxide and sodium hydroxide solution, oxidize and precipitate, and filter to obtain the nickel-cobalt-manganese solution, the composition of which is shown in Table 4 below:

[0067] Table 4 Chemical composition list of nickel cobalt manganese solution

[0068]

[0069] At 90°C, NaF was added at 1 times the sum of the molar equivalents of calcium and magnesium impurities, and the first filtrate was filtered and separated after reacting for 1.5 hours. The chemical composition of the first filtrate is shown in Table 5 below:

[0070] Table 5 first filtrate chemical composition table

[0071]

[0072]

[0073] At 90°C, add NH in an amount 6 times the sum of molar equivalents of calcium and magnesium impurities 4 F, synchronously adding 0.001% gelatin of the first filtrate mass, and reacting for 2 hours to filter and separate the target solution obtained. The chemical composit...

Embodiment 3

[0078] Dissolve the nickel-cobalt-manganese ternary waste with sulfuric acid, then add hydrogen peroxide and sodium hydroxide solution, oxidize and precipitate, and then filter to obtain the nickel-cobalt-manganese solution, the composition of which is shown in Table 7 below:

[0079] Table 7 Chemical composition table of nickel cobalt manganese solution

[0080]

[0081] At 90°C, add NaF at 1.2 times the sum of the molar equivalents of calcium and magnesium impurities, and react for 1.5 hours to filter and separate the first filtrate. The chemical composition of the first filtrate is shown in Table 8 below:

[0082] Table 8 first filtrate chemical composition table

[0083]

[0084] At 90°C, add NH in an amount 10 times the sum of molar equivalents of calcium and magnesium impurities 4 F, synchronously adding 0.01% gelatin of the first filtrate mass, and reacting for 2 hours to filter and separate the target solution obtained. The chemical composition of the target sol...

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Abstract

The invention provides a method for removing calcium and magnesium ions in a nickel-cobalt-manganese solution and a method for recovering nickel-cobalt-manganese ternary waste. The method for removing calcium and magnesium ions in the nickel-cobalt-manganese solution includes: mixing the raw materials including the nickel-cobalt-manganese solution and the first precipitant, performing the first reaction, and then separating the solid and liquid to obtain the first filtrate; including The materials including the first filtrate and the second precipitating agent are mixed, and after the second reaction, they are left to stand for aging, and then solid-liquid separation is obtained to obtain the target solution; the first precipitating agent includes sodium fluoride; the second precipitating agent agents include ammonium fluoride. A method for recovering nickel-cobalt-manganese ternary waste, comprising: preparing the nickel-cobalt-manganese ternary waste into a solution, then oxidizing, precipitating, and filtering to obtain a nickel-cobalt-manganese solution; using the described method to remove the nickel-cobalt-manganese solution Calcium and magnesium ions to obtain the target solution. The method for removing calcium and magnesium ions in nickel-cobalt-manganese solution provided by the present application can deeply remove calcium and magnesium ions and effectively recover ternary waste.

Description

technical field [0001] The invention relates to the field of hydrometallurgy, in particular to a method for removing calcium and magnesium ions in a nickel-cobalt-manganese solution and a method for recovering nickel-cobalt-manganese ternary waste. Background technique [0002] The ternary nickel-cobalt-manganese mixed solution is a necessary material for precursor synthesis. With the rapid development of the lithium battery industry and the increasing demand for high-purity nickel-cobalt-manganese precursors, the preparation of the front-end sulfate nickel-cobalt-manganese mixed solution has a great impact on the accuracy of impurity content. The requirements are getting higher and higher, especially the purification degree of calcium and magnesium impurities, which is very important in the process of preparing battery-grade nickel-cobalt-manganese sulfate solution. [0003] The current method has the problems of low removal efficiency and low purification precision. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B3/44C22B23/00C22B47/00
CPCC22B7/006C22B23/0461C22B47/00Y02P10/20
Inventor 钱云王博宇胡石春
Owner 贵州中伟资源循环产业发展有限公司