Solution preparation method of electrolytic manganese metal

A technology of electrolytic manganese and heavy metals, which is applied in the direction of photographic technology, equipment, and photographic auxiliary technology, can solve the problems of increased consumption of raw and auxiliary materials, difficult process operation, and large total amount of material and liquid, and achieves obvious impurity removal effect, The effect of reducing production cost and reducing sulfur content

Inactive Publication Date: 2013-12-18
NINGXIA TIANYUAN MANGANESE LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned existing technology, because the process of removing heavy metals directly contains a large amount of slag phase in the leached feed liquid, the total amount of the feed liquid is large, and also contains a lar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The manganese ore raw material ore powder is added to the anode solution and sulfuric acid for conventional leaching reaction: After the leaching solution reaches the leaching end point, the leaching reaction slurry is subjected to the first pressure filtration, and the leaching filtrate is separated from the solid and liquid; the separated leaching is leached After the filtrate is neutralized and adjusted to pH 6.4, hydrogen peroxide or air is added for oxidation and iron removal; the reaction temperature for iron removal is 45°C, and the reaction time is 1 hour; after chemical analysis reaches micro-iron, the pH of the liquid after iron removal is adjusted back to 6.4. Add thiram SDD to remove heavy metals by sulfuration; the added amount of SDD is 20 times the theoretical amount of heavy metal content; after the chemical analysis reaches micro-iron and nickel-free, perform secondary pressure filtration; then perform static separation for 16 hours; Filter press three ti...

Embodiment 2

[0034] The manganese ore raw material ore powder is added to the anode solution and sulfuric acid for conventional leaching reaction: After the leaching solution reaches the leaching end point, the leaching reaction slurry is subjected to the first pressure filtration, and the leaching filtrate is separated from the solid and liquid; the separated leaching is leached After the filtrate is neutralized and adjusted to pH 7.2, hydrogen peroxide or air is added for oxidation and iron removal; the reaction temperature for iron removal is 60℃, and the reaction time is 0.5 hours; after chemical analysis reaches micro-iron, the pH value of the liquid after iron removal is returned to 7.2. Add thiram SDD to remove heavy metals by sulfuration; the added amount of SDD is 15 times the theoretical amount of heavy metal content; after the chemical analysis reaches micro-iron and nickel-free, perform secondary pressure filtration; then perform static separation for 24 hours; Filter press three...

Embodiment 3

[0036] The manganese ore raw material ore powder is added to the anode solution and sulfuric acid for conventional leaching reaction: After the leaching solution reaches the leaching end point, the leaching reaction slurry is subjected to the first pressure filtration, and the leaching filtrate is separated from the solid and liquid; the separated leaching is leached After the filtrate is neutralized and adjusted to pH 7.0, hydrogen peroxide or air is added for oxidation and iron removal; the reaction temperature for iron removal is 55°C, and the reaction time is 0.8 hours; after chemical analysis reaches micro-iron, the pH value of the liquid after iron removal is adjusted back to 7.0, add thiram SDD to remove heavy metals by sulfuration; the added amount of SDD is 18 times the theoretical amount of heavy metal content; after chemical analysis reaches micro-iron and nickel-free, perform secondary pressure filtration; then perform static separation for 20 hours; Three pressure f...

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PUM

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Abstract

The invention relates to a solution preparation method of electrolytic manganese metal, and relates to improvement of a preparation process of an electrolytic stock solution in a process of producing manganese metal through a wet method. The method is characterized in that the preparation process comprises the following steps: (1) adding returned anode liquor to manganese ore raw material mineral powder, and adding sulfuric acid for leaching reaction; (2) carrying out primary pressure filtration on leaching reaction slurry, carrying out solid-liquid separation to obtain leaching filter liquor; (3) neutralizing the separated leaching filter liquor, and then oxidizing to remove iron; (4) regulating the PH value, and then sulfurizing to remove heavy metal; (5) carrying out secondary pressure filtration; (6) standing for separating; (7) carrying out third-time pressure filtration to complete a solution preparation process. The method disclosed by the invention can be used for effectively reducing the impurity content of liquid, reducing the consumption of a sulfurizing agent SDD (Sodium Dimethyl Dithiocarbamate) and reducing the production cost of electrolytic manganese, is obvious in impurity removing effect, and can be used for reducing the sulfur content of a product, enhancing the quality of the product and achieving the effect of removing the heavy metal through sulfurization.

Description

Technical field [0001] A method for preparing a solution of electrolytic metal manganese relates to an improvement in the preparation process of an electrolytic stock solution in the process of producing metal manganese by a wet method. Background technique [0002] Manganese and manganese alloys are indispensable and important raw materials for the steel industry, aluminum alloy industry, magnetic material industry, and chemical industry. The production process of electrolytic metal manganese is to process manganese carbonate ore manganese or manganese oxide ore, and then use concentrated sulfuric acid to react with manganese carbonate to prepare manganese sulfate solution, and then prepare it into electrolysis through a series of processes such as neutralization, oxidation, sulfidization, purification, and filtration. Then enter the electrolytic cell for electrolysis to produce metal manganese. [0003] At present, in the electrolyte preparation process, the manganese ore raw ma...

Claims

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Application Information

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IPC IPC(8): C22B3/08C22B3/44C25C1/10C22B47/00
Inventor 贾天将
Owner NINGXIA TIANYUAN MANGANESE LIMITED
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