Manufacturing process for producing synthetic reducing agent by using waste slag of electrolytic manganese and application of synthetic reducing agent

A technology of electrolytic manganese metal and production process, which is applied in the direction of improving process efficiency, etc., can solve problems such as large amount of waste manganese slag, environmental protection hazards and pressure, and reduction process can not be solved well, so as to reduce production cost, productivity improvement effect

Inactive Publication Date: 2010-11-10
张安良 +1
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Problems solved by technology

[0003] With the current main production raw materials in the electrolytic manganese industry - the grade and reserves of manganese carbonate ore sources are getting lower and lower, and the production cost of electrolytic manganese is getting higher and higher, and the amount of waste manganese slag brought in the production is ge

Method used

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Embodiment Construction

[0015] The manufacturing process of producing synthetic reducing agent with electrolytic metal manganese waste slag, its steps are as follows:

[0016] a. Add manganese slag to the mixed solution of sulfuric acid and leaching solution, the mass ratio is 1: (0.1-0.15): 4. After fully reacting, press filter it to obtain waste residue (mainly lime powder) and No. 1 Liquid;

[0017] B, barium sulfide solution is mixed with ammonium sulfate by the mass ratio of barium sulfate and ammonium sulfate is 1: (0.4-0.5), press filter after reaction and precipitate is removed and obtain No. 2 feed liquid (the described barium sulfide solution is barium sulfide The solution obtained after leaching the press-filtered cinder with water);

[0018] c. Add the No. 1 feed liquid above into the No. 2 feed liquid, press filter to separate the synthetic reducing agent and leachate after the reaction, and then recycle the leachate into step a.

[0019] In the above preparation steps, in addition to ...

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Abstract

The invention relates to a manufacturing process for producing a synthetic reducing agent by using waste slag of electrolytic manganese and application of the synthetic reducing agent. The manufacturing process comprises the following steps of: adding manganese slag into mixed liquid of sulfuric acid and lixivium and performing pressure filtration after a reaction is finished to obtain the waste slag and feed liquid 1; b, mixing solution of barium sulfide with ammonium sulfate in a mass ratio of barium sulfide to ammonium sulfate of 1:(0.4-0.5), and performing pressure filtration after reaction and removing precipitate to obtain feed liquid 2; and c, adding the feed liquid 1 into the feed liquid 2, performing pressure filtration to separate out the synthetic reducing agent after a reaction is finished and the lixivium, and then recycling the lixivium into the step a. The synthetic reducing agent has the advantages of efficiently reducing and utilizing manganese dioxide ore, using the waste slag of the electrolytic manganese as a main raw material, largely consuming the waste manganese, and largely reducing the waste slag and carbon dioxide generated in the manufacturing process for leaching and producing the electrolytic manganese by using manganese carbonate and reducing the manganese dioxide ore and by other reduction methods.

Description

Technical field: [0001] The invention relates to a manufacturing process for producing a synthetic reducing agent from electrolytic metal manganese waste residue and the application of the synthetic reducing agent. Background technique: [0002] In my country's electrolytic manganese industry, the manganese triangle at the junction of Hunan, Guizhou and Chongqing is the concentrated place. Due to the early development and rapid development, the supply of manganese carbonate ore in Xiushan and Songtao is already tight, and the local government repeatedly collects resources. Compensation fees and tens of yuan per ton are charged for going out of the county, and the ore price accounts for 1 / 3 of the cost of electrolytic manganese. The mines in Chongqing, Songtao, and Xiangxi all have the phenomenon of indiscriminate mining. The tens of thousands of tons of reserves are currently only half, and the resource recovery rate is very low, only about 50%. 19% dropped below 16%. Howev...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/08C22B3/22
CPCY02P10/20
Inventor 不公告发明人
Owner 张安良
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