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Production method of high-purity manganese sulfate

A production method, the technology of manganese sulfate, applied in the direction of manganese sulfate, etc., can solve the problems of unfavorable conditions, reduce production costs, consume impurity removal agents, etc., and achieve the effect of simplifying the purification problem

Inactive Publication Date: 2017-05-31
石朝军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are corresponding technologies to deal with these impurities to make the product meet the requirements, but the reaction temperature and pH value need to be strictly controlled, and a large amount of high-purity impurity removal agents are consumed, which is not conducive to reducing production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of production method of high-purity manganese sulfate, comprises the following steps:

[0024] (1) 100g of electrolytic manganese dioxide (above 90%) is crushed, washed with water, dried and ground to 200 mesh, and 40g of sulfur is ground to 100 mesh.

[0025] (2) Mix electrolytic manganese dioxide powder and sulfur powder at a ratio of 1:0.4 and put them into a porcelain dish evenly, put the porcelain dish into a muffle furnace heated to 630°C and bake for 25 minutes to produce manganese monoxide.

[0026] (3) Pour manganese monoxide from a porcelain dish into a beaker with 200 ml of pure water while it is hot, stir evenly for 30 minutes, and then filter to obtain a manganese monoxide filter cake.

[0027] (4) Take another beaker and add 200ml of pure water and 60g of analytically pure sulfuric acid, slowly add manganese monoxide filter cake several times under stirring to adjust the pH value to 5.2, then stop adding, and obtain a good manganese sulfate solution...

Embodiment 2

[0030] According to the preparation method described in embodiment 1, high-purity manganese sulfate is obtained, and different from embodiment 1, get electrolytic manganese dioxide 100g, sulfur 30g and the ratio of electrolytic manganese dioxide powder and sulfur powder in step (1) is 1:0.3.

Embodiment 3

[0032] According to the preparation method described in embodiment 1, high-purity manganese sulfate is obtained, and different from embodiment 1, get electrolytic manganese dioxide 100g, sulfur 50g and the ratio of electrolytic manganese dioxide powder and sulfur powder in step (1) is 1:0.5.

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PUM

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Abstract

The invention discloses a production method of high-purity manganese sulfate. The method comprises the following steps: (1) crushing electrolytic manganese dioxide, washing with water, drying, pulverizing the electrolytic manganese dioxide, and pulverizing sulfur; (2) uniformly mixing the electrolytic manganese dioxide powder and sulfur powder in a ratio of 1:0.3-1:0.5, putting the mixture into a porcelain dish, and roasting the porcelain dish in a 630-DEG C muffle furnace, thereby producing manganese monoxide; (3) pouring the manganese monoxide into a pure-water-filled beaker while the manganese monoxide is hot, stirring uniformly, and filtering to obtain a filter cake; (4) taking another beaker, adding pure water and analytically pure sulfuric acid, regulating the pH value to 5.2 with the filter cake while stirring, and stopping adding, thereby obtaining the leached manganese sulfate solution; (5) carrying out concentration and concentration on the leached manganese sulfate solution at the temperature of lower than 100 DEG C; and when the filtrate is almost dry, filtering while the filtrate is hot, thereby obtaining the manganese sulfate monohydrate crystal. The method disclosed by the invention can simplify the problem of solution purification in the preparation process, thereby ensuring the solution quality and lowering the production cost.

Description

technical field [0001] The invention belongs to the field of manganese sulfate production technology, in particular to a production method of high-purity manganese sulfate. Background technique [0002] Among all the manganese products used in the world, manganese products produced from manganese sulfate account for 80%. This is also the main aspect of manganese sulfate consumption. It is used in industries such as industry, electronics, light industry, animal husbandry and agriculture. used widely. Manganese sulfate is a commercial product in China, which is divided into industrial grade manganese sulfate and feed grade manganese sulfate. Industrial manganese sulfate is mainly used as synthetic raw material for ink, paint, paint drier, catalyst for synthetic fatty acid, and raw material for other manganese salts, and is used in industrial sectors such as electronics, metallurgy, and national defense. Feed grade manganese sulfate is mainly used in the feed industry as a ra...

Claims

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Application Information

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IPC IPC(8): C01G45/10
CPCC01G45/10C01P2006/80
Inventor 石朝军谢勇宋宏清
Owner 石朝军