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Method of manufacturing electrolytic metal manganese using titanium white waste acid and manganese dioxide ore

A technology of manganese dioxide ore and electrolytic metal manganese, which is applied in the field of metallurgical chemistry, can solve problems such as environmental pollution, and achieve significant economic benefits and good filtration performance

Inactive Publication Date: 2006-01-25
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is: in order to comprehensively utilize sulfuric acid and ferrous ions in titanium white waste acid, completely solve the environmental pollution problem caused by titanium white waste acid from the source

Method used

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  • Method of manufacturing electrolytic metal manganese using titanium white waste acid and manganese dioxide ore

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Experimental program
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Embodiment Construction

[0040] figure 1 The process flow of producing electrolytic manganese metal from titanium white waste acid is described, and the H in titanium white waste acid is used 2 SO 4 with Fe 2+ As auxiliary materials, manganese dioxide ore and pyrite are added to produce electrolytic manganese metal:

[0041] 1. Leaching and iron removal

[0042] The leaching is carried out in a circular mechanical stirring tank of 6m×5.0m, and the initial acid concentration of leaching is 55.6kg / m 3 , The leaching temperature is 90℃~95℃, the leaching time is 2.5h, and the oxidation precipitation time is 1~2h. The removal rate of Fe is above 99%, and the leaching rate of Mn is more than 95%. The leaching and filtering performance of Fe is good.

[0043] The amount of waste acid used for leaching titanium dioxide is 77.90m 3 / d, and add manganese electrolytic anolyte 460m 3 / d, slag washing water 206m 3 / d;

[0044] According to the experimental research results, every 1m invested 3 Add 860kg ...

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Abstract

The invention relates to a method to make electrolysis manganese metal by titan white spent acid and manganese dioxide mine. The feature is that it uses the H2SO4 and Fe2+ in the titan white spent acid as assistant material, adds manganese dioxide mine and sulfur iron ore to make electrolysis manganese metal. The invention solves the environment pollution problem caused by titan white spent acid. The electrolysis manganese metal has high quality and reaches the YB / T051-2003DJMnA high purity production standard.

Description

Technical field: [0001] The invention belongs to the extraction of manganese in the field of metallurgical chemistry, in particular to a method for preparing electrolytic metal manganese by utilizing titanium white waste acid and manganese dioxide ore. Background technique: [0002] At present, there are more than 60 sulfuric acid titanium dioxide factories in my country, with an annual output of nearly 600,000 tons of titanium dioxide. The production of 1 ton of titanium dioxide produces about 6 to 8 tons of waste acid containing 20% ​​sulfuric acid, and the annual national titanium dioxide waste acid is about 4 million tons, equivalent to 100% H 2 SO 4 More than 200 tons have no good comprehensive utilization method to deal with. Many titanium dioxide factories only discharge the waste acid after neutralization with lime, resulting in waste of acid resources and serious environmental pollution. Invention content: [0003] The purpose of the present invention is to com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/08C22B3/46C25C1/10
Inventor 兰红春梅光贵周元敏许胜凡刘荣义黄家富梁汝腾霍云波
Owner CENT SOUTH UNIV
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