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Method for separating manganese and silver of manganese-silver ore and extracting manganese sulfate by purifying manganese dipped solution

A technology of manganese silver ore and manganese sulfate, which is applied in the separation of manganese and silver ore and the purification of manganese leaching solution to extract manganese sulfate, silver separation and purification treatment of manganese leaching solution. It can solve the problem of reducing manganese in the field of manganese oxide ore containing silver. Low efficiency, large dust, high coal consumption and other problems, to achieve high separation and recovery effect

Inactive Publication Date: 2010-09-15
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using pyrolusite as raw material to produce manganese sulfate, the mainstream industrial application process is still coal / manganese ore mixing-roasting reduction-manganese leaching-purification-manganese sulfate crystallization process. Due to the use of a roasting reduction temperature of about 800°C, coal spontaneous combustion and reduction efficiency Low, there are defects such as high coal consumption, large dust, and large equipment investment

Method used

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  • Method for separating manganese and silver of manganese-silver ore and extracting manganese sulfate by purifying manganese dipped solution
  • Method for separating manganese and silver of manganese-silver ore and extracting manganese sulfate by purifying manganese dipped solution
  • Method for separating manganese and silver of manganese-silver ore and extracting manganese sulfate by purifying manganese dipped solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Pre-crushed corn stalks to a powder with a particle size of about 0.15 mm, and added 1 kg of powder to W(H2 SO 4 ) = 95% of 3kg sulfuric acid, 5.3kg of water pre-mixed solution, stirring, heating to 95 ℃ pre-degradation saccharification 0.5h, adding content W (Mn) = 30.5%, silver 640g / t, W (Fe) = 11.5 4kg of manganese silver concentrate powder with a particle size of -0.075mm and 90%, 5kg of water, stirring and heat preservation at 90°C to 95°C for manganese leaching reaction for 5h, separating undissolved manganese leaching slag, washing manganese leaching slag with 12kg of water, manganese The leaching rate is 92.5%, and the silver leaching rate is less than 2%;

[0033] (2) Combine the manganese leaching solution and the washing solution, add 0.85kg of calcium carbonate, stir and heat up to 90°C and keep it warm for 1h. After neutralization, the pH of the solution is 5. Add 0.2kg of bentonite and keep it warm for 0.5h. Iron slag removal;

[0034] (3) Purificati...

Embodiment 2

[0039] (1) Wheat bran is pre-crushed to a powder with a particle size of about 0.15 mm, and 0.8 kg of powder is added to W(H 2 SO 4 ) = 95% of 3kg sulfuric acid, 5.3kg of water pre-mixed solution, stirring, heating to 60 ° C pre-degradation saccharification 1h, add content W (Mn) = 30.5%, silver 640g / t, W (Fe) = 11.5% 4kg of manganese-silver concentrate powder with a particle size of -0.075mm and 90%, add 5kg of water, stir and raise the temperature at 90°C to 95°C to leach manganese for 4 hours, separate the undissolved manganese leaching slag, wash the manganese leaching slag with 12kg of water, and the manganese leaching rate 93.10%, silver dissolution rate is less than 2%;

[0040] (2) Combine the manganese leaching solution and the washing solution, add 0.85kg of calcium carbonate, stir and heat up to 90°C, the pH value of the solution after neutralization is 5, add 0.1kg of natural zeolite powder and keep it warm for 0.5h, separate Iron slag removal;

[0041] (3) Puri...

Embodiment 3

[0046] (1) The fibrous slag of apple juice is pre-crushed to a powder with a particle size of about 0.50 mm, and 0.5 kg of powder is added to W(H 2 SO 4 ) = 95% of 3kg sulfuric acid, 5.3kg of water pre-mixed solution, stirring, heating to 95 ℃ pre-degradation saccharification 0.5h, adding content W (Mn) = 30.5%, silver 640g / t, W (Fe) = 11.5 4kg of manganese-silver concentrate powder with a particle size of -0.075mm and 90%, add water 9kg, stir and raise the temperature at 90°C to 95°C to leach manganese for 3 hours, separate the undissolved manganese leaching slag, wash the manganese leaching slag with 12kg of water, and manganese leaching The rate is 93.50%, and the silver dissolution rate is less than 2%;

[0047] (2) Combine the manganese leaching liquid and the washing liquid, add 0.70 kg of calcium carbonate, stir and heat up to 90 ° C, the pH value of the solution after neutralization is 5, add 0.3 kg of diatomaceous earth powder for 0.5 h, separate Remove iron slag; ...

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Abstract

The invention discloses a method for separating manganese and silver of manganese-silver ore and purifying manganese dipped solution thereof. The method comprises the following steps of: 1) pre-degrading and saccharifying plant byproducts comprising straws, hulls and slag; 2) reacting the product obtained in the step 1) with crude manganese-silver ore or enriched mixed concentrate dipped manganese; 3) separating, neutralizing and adsorbing the manganese dipped solution in the step 2) to obtain solution for preparing manganese sulfate and the like by further purification and crystallization; and 4) obtaining manganese dipped slag in the step 3), wherein the manganese dipped slag has high reaction activity, and the leaching time is short and the energy consumption is low during silver leaching treatment. The purifying method is also suitable for purifying the manganese dipped solution by adopting a reducing agent similar to rice bran and the like to treat pyrolusite or ferromanganese ore, and the treated manganese solution can be used for the production of manganese sulfate, electrolytic manganese and the like. The method has the characteristics of wide separation raw material source, reasonable process route, low equipment investment, low treatment cost, stable product performance and the like; and the manganese sulfate prepared by the method can meet the standard requirements of the industries such as chemical engineering, feed, agriculture and the like.

Description

technical field [0001] The invention relates to a method for mineral separation and extraction, which is a method for separating manganese and silver ore and purifying manganese leaching solution to extract manganese sulfate, specifically for the separation of manganese and silver from silver-containing manganese oxide ore and the purification of manganese leaching solution The method of processing. Wherein, this method of manganese leaching liquid purification treatment is also suitable for manganese leaching liquid purification treatment of pyrolusite and ferromanganese ore treated with reducing agents such as rice bran; the purified manganese liquid can be used to prepare manganese sulfate and electrolytic manganese, etc., prepared Manganese sulfate can meet the requirements of different industry standards such as chemical industry, feed, and agriculture. Background technique [0002] The manganese in the silver-containing manganese oxide ore is mainly tetravalent mangan...

Claims

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Application Information

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IPC IPC(8): C22B3/06C22B47/00B22F9/24C01G45/10
CPCY02P10/20
Inventor 余丽秀张然唐祥虎宋广毅张志湘赵留喜
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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