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Method for removing zinc, calcium and magnesium ions in manganese sulfate solution by synergistic extraction method

A manganese sulfate solution and extraction technology, which is applied in the field of hydrometallurgy, can solve the problems such as the inability of the extractant to be recycled for a long time, the high water solubility of the extractant, the residual fluoride ion, etc., so as to save energy and auxiliary materials, and reduce the water solubility. , the effect of less consumption

Active Publication Date: 2020-08-14
JILIN JIEN NICKEL IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Wet intermediate smelting products are used as raw materials for the production of nickel salts and cobalt salts. Due to the large amount of manganese contained in the raw materials, most enterprises currently treat the manganese in the raw materials as crude manganese sulfate or manganese slag due to technical limitations, and some In the production of enterprises, precipitation, extraction, and a combination of precipitation and extraction are used to produce high-purity manganese sulfate, but there are the following problems. The precipitation method mostly uses fluoride to remove calcium and magnesium before subsequent treatment. Its shortcoming is that the process line is long. , fluorine ions remain, and the equipment loss is large; the extraction method uses organic phosphoric acid extractant full extraction or carboxylic acid extractant to separate manganese from manganese, but the cost in actual production is relatively high, and calcium and manganese cannot be completely separated. At the same time, the extractant is water soluble Strong, the extractant cannot be recycled for a long time

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  • Method for removing zinc, calcium and magnesium ions in manganese sulfate solution by synergistic extraction method

Examples

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Effect test

Embodiment 1

[0023] The method for removing zinc, calcium and magnesium ions in manganese sulfate solution by cooperative extraction is characterized in that, comprising the following steps:

[0024] Step 1. According to the weight ratio of di(2-ethylhexyl) phosphate, tributyl phosphate and dinonyl naphthalene sulfonic acid, the extractant is configured in a ratio of 5:2:3, and the volume ratio of extractant to sulfonated kerosene is Adding sulfonated kerosene to the extractant at a ratio of 3:7 is configured as an organic phase with an extractant concentration of 30%; the crude manganese sulfate solution is the water phase; the pH of the crude manganese sulfate solution is 2.0, and the crude The content of each element in the manganese sulfate solution is manganese 115g / L, iron 0.0008g / L, zinc 8.55g / L, calcium 0.3g / L, magnesium 0.005g / L, nickel 0.003g / L, sodium 0.005g / L;

[0025] Step 2, adding the organic phase configured in step 1 into a sodium hydroxide solution with a concentration of...

Embodiment 2

[0032] The method for removing zinc, calcium and magnesium ions in manganese sulfate solution by cooperative extraction is characterized in that, comprising the following steps:

[0033] Step 1. According to the weight ratio of di(2-ethylhexyl) phosphate, tributyl phosphate and dinonyl naphthalene sulfonic acid, the extractant is configured in a ratio of 5:1.5:3.5, and the volume ratio of extractant to sulfonated kerosene is Adding sulfonated kerosene into the extractant at a ratio of 3:7 is configured as an organic phase with an extractant concentration of 30%; the crude manganese sulfate solution is the water phase; the pH of the crude manganese sulfate solution is 1.7, and the crude The content of each element in the manganese sulfate solution is manganese 122g / L, iron 0.0009g / L, zinc 8.13g / L, calcium 0.26g / L, magnesium 0.003g / L, nickel 0.004g / L, sodium 0.001g / L;

[0034] Step 2, adding the organic phase configured in step 1 into a sodium hydroxide solution with a concentra...

Embodiment 3

[0041] The method for removing zinc, calcium and magnesium ions in manganese sulfate solution by cooperative extraction is characterized in that, comprising the following steps:

[0042] Step 1. According to the weight ratio of di(2-ethylhexyl) phosphate, tributyl phosphate and dinonyl naphthalene sulfonic acid, the extractant is configured in a ratio of 5:1.5:3.5, and the volume ratio of extractant to sulfonated kerosene is Adding sulfonated kerosene into the extractant at a ratio of 2:8 is configured as an organic phase with an extractant concentration of 20%; the crude manganese sulfate solution is the water phase; the pH of the crude manganese sulfate solution is 2.5, and the crude The content of each element in the manganese sulfate solution is manganese 95g / L, iron 0.0003g / L, zinc 9.71g / L, calcium 0.20g / L, magnesium 0.005g / L, nickel 0.002g / L, sodium 0.001g / L;

[0043] Step 2, adding the organic phase configured in step 1 to a sodium hydroxide solution with a concentratio...

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Abstract

The invention discloses a method for removing zinc, calcium and magnesium ions in a manganese sulfate solution by a synergistic extraction method and belongs to the technical field of hydrometallurgy.The method comprises the following steps of: mixing di(2-ethylhexyl) phosphate, tributyl phosphate and dinonyl naphthalene sulfonic acid according to a certain ratio to prepare an extraction agent, and adding sulfonated kerosene to prepare an organic phase; saponifying the organic phase, and extracting and purifying zinc, calcium and magnesium ions in the manganese sulfate solution so as to prepare high-purity battery-grade manganese sulfate. According to the method, a byproduct, namely a manganese sulfate solution with relatively high impurity content, produced from production of nickel sulfate and cobalt sulfate is used as a water phase; an extraction agent prepared in proportion is used as an organic phase; after multi-stage counter-current extraction, a liquid from a water-phase outlet is a pure manganese sulfate solution; the organic phase is recycled after being subjected to segmented pickling for regeneration; and a water phase produced from the regenerative section is a zinc sulfate product. The method has the advantages that the raw material cost is low, the alkali consumption is greatly reduced, the process is simple, the flow is short, the production efficiency is high,the production process is clean, no waste water is discharged and the like.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and specifically relates to a method for removing zinc, calcium and magnesium ions in a manganese sulfate solution by using a cooperative extraction method, so as to prepare high-purity battery-grade manganese sulfate. Background technique [0002] Wet intermediate smelting products are used as raw materials for the production of nickel salts and cobalt salts. Due to the large amount of manganese contained in the raw materials, most enterprises currently treat the manganese in the raw materials as crude manganese sulfate or manganese slag due to technical limitations, and some In the production of enterprises, precipitation, extraction, and a combination of precipitation and extraction are used to produce high-purity manganese sulfate, but there are the following problems. The precipitation method mostly uses fluoride to remove calcium and magnesium before subsequent treatment. Its shortco...

Claims

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Application Information

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IPC IPC(8): C01G45/10
CPCC01G45/10C01G45/003C01P2006/80Y02P10/20
Inventor 刘海宁余鹏梁晓剑李勇江杨先鹏
Owner JILIN JIEN NICKEL IND
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