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Method for preparing hybrid oxide of manganese by manganese sulfate solution

A manganese sulfate solution, mixed oxide technology, applied in manganese oxide/manganese hydroxide and other directions, can solve the problem of low product recovery rate

Inactive Publication Date: 2006-10-11
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, manganese hydroxide is used to directly prepare trimanganese tetraoxide, and the product recovery rate is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] The hydrolyzate hydroxide of manganese sulfate is oxidized with oxygen at 350°C for 10 hours to obtain a mixed oxide containing 76% of manganese dioxide, 2% of manganese trioxide, and 22% of manganese such as trimanganese tetraoxide.

Embodiment 2

[0009] The hydrolyzate hydroxide of manganese sulfate is oxidized with oxygen at 150°C for 12 hours to obtain a mixed oxide containing 46% of manganese dioxide, 2% of manganese trioxide, and 52% of manganese such as trimanganese tetraoxide.

Embodiment 3

[0011] The hydrolyzate hydroxide of manganese sulfate is oxidized with oxygen at 500°C for 2 hours to obtain a mixed oxide containing 36% of manganese dioxide, 1% of manganese trioxide, and 63% of manganese such as trimanganese tetraoxide.

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PUM

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Abstract

The invention belongs to field of non-ferrous metal material, especially relating to a method for preparing mixed oxide of manganese by using manganese solution. It comprises following steps: employing the cleaning liquor extracted by sulfuric acid from manganes mineral-manganese sulfate as raw material; depositing the manganese sulfate solution to manganese sulfate and basic manganese sulfate with ammonia solution; treaing furtherly to converse basic manganese sulfate to manganese hydroxide; oxiding the manganese hydroxide and slight basic manganese sulfate with oxidant into manganomanganic oxide under condition od continous stirring and a certain temperature and pH. The invention is characterized by low sulfur content in got manganomanganic oxide and low cost.

Description

technical field [0001] The invention belongs to the field of nonferrous metal materials, in particular to a method for preparing manganese mixed oxides with manganese sulfate solution. Background technique [0002] The precursors for preparing manganese tetroxide include electrolytic metal manganese, manganese hydroxide, manganese carbonate, electrolytic manganese dioxide, etc. Among them, the method of preparing trimanganese tetraoxide with electrolytic metal manganese precursors is the current industrial production of trimanganese tetraoxide at home and abroad. main method. Electrolytic manganese metal itself has high cost and high impurity content, and the manganese manganese tetraoxide produced by using it as a precursor has poor quality and high cost. The method of using manganese mixed oxides as the preparation method of trimanganese tetraoxide has not been reported at home and abroad. On March 3, 2006, Beijing University of Science and Technology applied for a paten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02
Inventor 邹兴王国承孙宁磊郭建
Owner UNIV OF SCI & TECH BEIJING