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Method for preparing manganese sulfate solution by two-ores method

A technology of manganese sulfate solution and two-mine method, which is applied in the direction of manganese sulfate, can solve the problems of low manganese content, high production cost, and low manganese recovery rate, and achieve high manganese content, low production cost, and manganese recovery rate. high effect

Inactive Publication Date: 2009-06-17
杜祖德
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Problems solved by technology

[0003] The disadvantages of this traditional process method are: the consumption of sulfuric acid is large, the production cost is high, the manganese content of the product is low, and the energy consumption is high. Every 1 ton of manganese sulfate needs to consume 1.2-1.5 tons of coal, and the manganese recovery rate is low: Manganese recovery is only up to 60-65%

Method used

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Embodiment Construction

[0010] A kind of method that prepares manganese sulfate solution with two ore method, it comprises the steps:

[0011] 1. Crush the manganese ore to particles below 2mm, measure it into the wet mill to grind the pulp, the fineness is 100 mesh 100%, and the grinding pulp water is taken from the slag washing water of the reaction press filter section, and the solid-liquid ratio of the pulp is controlled at 1. : 1.6~1.8;

[0012] 2. Crush the pyrite to less than 2mm, and then measure it into the ultra-fine wet mill to grind the pyrite slurry. The solid-liquid ratio is controlled at 1:2.1-2.5, and the fineness is 100 mesh and 100% pass;

[0013] 3. Prepare pyrite pulp and manganese ore pulp in proportion. The ratio of manganese ore and pyrite is 1:0.16~0.2 (on a dry basis), add water and sulfuric acid, and the ratio of manganese ore and sulfuric acid is 1:0.5~ 0.6 (calculated on a dry basis for ore), the solid-to-liquid ratio of the reaction slurry is 1:4.1~5, after heating and r...

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Abstract

The invention discloses a method for preparing a manganese sulfate solution by using a two-ore method. The method for preparing the manganese sulfate comprises: crushing manganese ore to grains less than 2mm by using a crusher; grinding the manganese ore into 100 mesh slurry by using a wet grinder; grinding iron pyrite containing less than 32 percent of sulfur into 100 mesh slurry by using the same wet grinder; mixing the slurry of the manganese ore with the slurry of the iron pyrite; adding water and sulfuric acid into the mixture; and carrying out heating reaction, iron removal, heavy metal removal, neutralization and pressure filtration and obtaining the manganese sulfate solution. Due to the technical proposal, the method for preparing the manganese sulfate solution has the advantages of small sulfuric acid consumption, low production cost, high content of manganese of products, high recovery rate of manganese and so on compared with the prior art, wherein the content of manganese of the products is increased to 98 to 99 percent from original 60 to 65 percent, and the recovery rate of manganese is up to 85 percent. The products can be used for deep processing of various high-purity manganese products such as electrolytic manganese dioxide, high-purity manganese carbonate, electronic grade manganese monoxide and chemical manganese dioxide.

Description

technical field [0001] The invention relates to a method for producing manganese sulfate, in particular to a method for preparing manganese sulfate solution by a two-mine method, so as to reduce energy consumption and production cost and improve the recovery rate of manganese. Background technique [0002] Manganese sulfate is used to process various manganese products such as: electrolytic manganese dioxide, high-purity manganese carbonate, electronic grade manganese tetraoxide, electronic grade manganese monoxide, chemical manganese dioxide, industrial grade manganese sulfate monohydrate, chemical grade one Manganese sulfate water, pharmaceutical grade manganese sulfate monohydrate, food grade manganese sulfate monohydrate, analytical pure manganese sulfate monohydrate, etc. The production method of the existing manganese sulfate solution is: use a crusher to crush the manganese ore to particles below 2mm, then use a wet mill to grind the manganese ore into -100 mesh pulp,...

Claims

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Application Information

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IPC IPC(8): C01G45/10
Inventor 杜祖德
Owner 杜祖德
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