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Production process of manganese sulfate

A production process and technology of manganese sulfate, applied in the preparation of manganese sulfate and manganese compounds, etc., can solve problems such as pollution of the environment, and achieve the effect of reducing pollution and ensuring quality

Active Publication Date: 2019-01-04
GEM JIANGSU COBALT IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the main purpose of the present invention is to provide a kind of production process of manganese sulfate, which solves the problems in the prior art that need to use a large amount of sulfide and fluoride to remove heavy metal ions such as calcium and zinc and pollute the environment

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  • Production process of manganese sulfate

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Embodiment 1

[0034] 1) Use a loaded organic extractant composed of Lix973 extractant with a volume ratio of 5% mixed with 260# solvent oil to treat the by-products after cobalt smelting (the by-products after cobalt smelting include: manganese 80g / L, copper 10g / L, Zinc 2g / l calcium 8g / L, surplus is metal or non-metal impurity) extracts, and collects raffinate, makes the first intermediate mixed solution after removing copper; 2) adds sodium hypochlorite in above-mentioned first intermediate mixed solution, Stirring and reacting for 4 hours, standing and aging for 1 day, separating and precipitating to obtain the second intermediate mixed solution after decalcification; The two intermediate mixtures are extracted, the oil phase is collected, and an organic phase loaded with manganese is obtained; 4) sulfuric acid is used to back-extract the organic phase loaded with manganese, and the aqueous phase is collected to obtain a manganese sulfate solution; 5) the above manganese sulfate is prepare...

Embodiment 2

[0036] 1) Use a loaded organic extractant composed of Lix973 extractant with a volume ratio of 10% mixed with 260# solvent oil to treat by-products after cobalt smelting (by-products after cobalt smelting include: manganese 70g / L, copper 11gL, zinc 2g / L, calcium 10g / L, the rest is metal or non-metallic impurity) to extract, collect raffinate, make the first intermediate mixed solution after copper removal; 2) add sodium hypochlorite in above-mentioned first intermediate mixed solution, stir After reacting for 5 hours, standing and aging for 2 days, separating and precipitating to obtain the second intermediate mixed solution after decalcification; The intermediate mixed solution is extracted, and the oil phase is collected to obtain an organic phase loaded with manganese; 4) back-extracting the organic phase loaded with manganese with sulfuric acid, and the aqueous phase is collected to obtain a manganese sulfate solution; 5) the above manganese sulfate solution is Perform ev...

Embodiment 3

[0038] 1) Use a loaded organic extractant composed of Lix973 extractant with a volume ratio of 15% mixed with 260# solvent oil to treat the by-products after cobalt smelting (the by-products after cobalt smelting include: manganese 50g / L, copper 5g / L, Zinc 1g / L, calcium 6g / L, and the remainder is metal or non-metallic impurities) to extract, collect the raffinate, and obtain the first intermediate mixed solution after copper removal; 2) add sodium hypochlorite to the above-mentioned first intermediate mixed solution , stirred and reacted for 6h, after standing and aging for 3d, separated and precipitated to obtain the second intermediate mixed solution after decalcification; The second intermediate mixture is extracted, the oil phase is collected, and an organic phase loaded with manganese is obtained; 4) sulfuric acid is used to back-extract the organic phase loaded with manganese, and the aqueous phase is collected to obtain a manganese sulfate solution; 5) the above-mentione...

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Abstract

The invention discloses a production process of manganese sulfate. The process comprises the following steps of 1) extracting by-products of cobalt after smelting by using Lix series organic extractant to remove copper, and stripping copper liquid into a copper electrodeposition system, and extracting remaining liquid as a first intermediate mixed solution; 2) adding sodium hypochlorite to the above extracting remaining liquid, stirring for reaction, standing to precipitate, and separating the precipitate to obtain a second intermediate mixture; 3) using a P507 organic extractant to extract the second intermediate mixture to collect an oil phase to obtain a manganese-loaded organic phase; 4) stripping the manganese-loaded organic phase with sulfuric acid, and collecting an aqueous phase toobtain a manganese sulfate solution; 5) making the manganese sulfate solution subjected to evaporative crystallization, centrifugal dehydration and drying to obtain a manganese sulfate product. The process adopts the copper extractant to extract copper in a high chloride ion solution, adopts a sodium hypochlorite calcium removing method, and removes calcium by using the poor solubility of calciumhypochlorite, thereby replacing the method of removing the calcium by using environmentally polluting fluoride in the prior art, and reducing the pollution to the environment.

Description

technical field [0001] The invention belongs to the technical field of recycling metal ions in cobalt smelting by-products, and in particular relates to a process for producing manganese sulfate by using cobalt smelting by-products as raw materials. Background technique [0002] At present, in the wet production of cobalt salts, the extraction method is used to separate impurities, thereby producing a waste liquid with high manganese content. The methods for treating this waste liquid (by-products after cobalt smelting) mainly include lime precipitation, and preparation of sulfuric acid after removing impurities. Manganese, or use sulfide to remove heavy metals, fluoride to remove calcium, then extract manganese with P205 or P507 extractant, and back-extract to obtain manganese sulfate products. This method uses a large amount of fluoride and sulfide, so that the wastewater contains a lot Fluoride ions and sulfur ions pollute the environment. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/10
CPCC01G45/003C01G45/10C01P2006/80
Inventor 杜长福张爱青叶圣毅伍一根
Owner GEM JIANGSU COBALT IND CO LTD
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