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Method for preparing high-purity manganese chloride by means of waste manganese piece and product

A technology of manganese chloride and manganese flakes, applied in manganese halide and other directions, can solve problems such as failure to meet production requirements

Inactive Publication Date: 2019-02-22
重庆新申世纪新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Manganese chloride is an important fine chemical raw material, and high-purity manganese chloride is widely used in medicine, high-quality magnesium-manganese alloy, aluminum-manganese alloy, and high-purity manganese metal powder catalysts due to its high purity and uniform quality. system, methanocene-based manganese-based high-efficiency gasoline antiknock agents and other compounds, especially since the development of manganese-based secondary battery materials, people have put forward higher requirements for manganese chloride raw materials, and the traditional manganese chloride production process produces The manganese chloride has not reached the material production requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of high-purity manganese chloride

[0024] (1) add excessive waste manganese flakes and industrial hydrochloric acid to react in reactor, obtain reaction solution after reaction stops;

[0025] (2) The reaction solution obtained in the step (1) is warmed up to 60°C, then barium sulfide is added, and the insulation is left to stand for 4h to filter to obtain a clear liquid, wherein the mol ratio of barium sulfide to the heavy metal ion in the reaction solution is 2:1;

[0026] (3) Add hydrogen peroxide to the primary clear liquid obtained in step (2), adjust the pH value to 5 after raising the temperature to 90° C., filter after keeping the temperature for 3 hours, and obtain the secondary clear liquid, wherein the added amount of hydrogen peroxide is 5 times the equivalent of reducing substances in the primary serum;

[0027] (4) Pass the secondary clear liquid obtained in step (3) through the chlorine-type anion resin, and the passing time is 0.5h to obta...

Embodiment 2

[0032] Preparation of high-purity manganese chloride

[0033] (1) add excessive waste manganese flakes and industrial hydrochloric acid to react in reactor, obtain reaction solution after reaction stops;

[0034] (2) The reaction solution obtained in step (1) is warmed up to 70° C., then barium sulfide is added, and the insulation is left to stand for 6 hours to filter to obtain a clear liquid, wherein the mol ratio of barium sulfide to the heavy metal ion in the reaction solution is 1:1;

[0035] (3) Add hydrogen peroxide to the primary clear liquid obtained in step (2), adjust the pH value to 4.5 after raising the temperature to 100° C., filter after keeping the temperature for 1 hour, and obtain the secondary clear liquid, wherein the hydrogen peroxide is added in an amount of 8 times the equivalent of reducing substances in the primary serum;

[0036] (4) Pass the secondary clear liquid obtained in step (3) through the chlorine-type anion resin, and the passing time is 2...

Embodiment 3

[0041] Preparation of high-purity manganese chloride

[0042] (1) add excessive waste manganese flakes and industrial hydrochloric acid to react in reactor, obtain reaction solution after reaction stops;

[0043] (2) The reaction solution obtained in the step (1) is warmed up to 80°C, then barium sulfide is added, and the heat preservation is left to stand for 2h to filter to obtain a clear liquid, wherein the mol ratio of barium sulfide to the heavy metal ion in the reaction solution is 3:1;

[0044] (3) Add hydrogen peroxide to the primary clear liquid obtained in step (2), adjust the pH value to 5.5 after raising the temperature to 95° C., filter after keeping the temperature for 2 hours, and obtain the secondary clear liquid, wherein the hydrogen peroxide is added in an amount of 2 times the equivalent of reducing substances in the primary serum;

[0045] (4) Pass the secondary clear liquid obtained in step (3) through the chlorine-type anion resin, and the passing time ...

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Abstract

The invention relates to a method for preparing high-purity manganese chloride by means of a waste manganese piece and a product, and belongs to the technical field of manganese product preparation. In the method, sulfate radicals in a chloride ion exchange resin removal solution are adopted, so that compared with a traditional method where barium chloride is added to remove sulfate radicals, themethod for preparing the high-purity manganese chloride by means of the waste manganese piece has the advantage that the content of barium ions in the manganese chloride product can be reduced greatly. Meanwhile, after iron ions are removed through oxidation and sedimentation, a trivalent metal ion chelating agent is added to change an existing state of trivalent metal ions in a solution, the contents of metal ions of iron, aluminium and the like in the manganese chloride are reduced, and finally, the high-purity manganese chloride is prepared. Moreover, the method is simple, easy to operate,and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of manganese series products, and in particular relates to a method and a product for preparing high-purity manganese chloride by utilizing waste manganese flakes. Background technique [0002] Manganese chloride is an important fine chemical raw material, and high-purity manganese chloride is widely used in medicine, high-quality magnesium-manganese alloy, aluminum-manganese alloy, and high-purity manganese metal powder catalysts due to its high purity and uniform quality. system, methanocene-based manganese-based high-efficiency gasoline antiknock agents and other compounds, especially since the development of manganese-based secondary battery materials, people have put forward higher requirements for manganese chloride raw materials, and the traditional manganese chloride production process produces Manganese chloride can no longer meet the production requirements of the material. Therefor...

Claims

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Application Information

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IPC IPC(8): C01G45/06
CPCC01G45/06C01P2006/80
Inventor 申静王强何从林
Owner 重庆新申世纪新材料科技有限公司
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