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Method for recycling waste residue in manganese industry production

A technology of waste residue and filter residue, applied in application, agriculture, process efficiency improvement and other directions, can solve the problems of using many auxiliary materials and mechanical equipment, large production area, long process route, etc., to achieve no waste residue discharge and increase heavy metal content. Effect

Inactive Publication Date: 2015-04-01
大新县信锰矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for recycling waste slag produced in the manganese industry, which can recycle iron red ore powder, manganese carbonate concentrate, prepare sodium fluorosilicate and nitrogen-phosphorus compound fertilizer base material, to solve the current waste slag recycling process The problem of long process route, many auxiliary materials and mechanical equipment, large production area and high loss

Method used

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  • Method for recycling waste residue in manganese industry production
  • Method for recycling waste residue in manganese industry production
  • Method for recycling waste residue in manganese industry production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Weigh 1000g of leached filter press residue and 8L of clean water, put them into a pulverizer to pulverize them into a pulp, and pass through a 100-mesh sieve. Finally, pass through a 100-mesh sieve and add the compound mixing tank together, start the mixer, and stir at a stirring speed of 65 rpm.

[0031] 2. Measure 98% H2SO4500ml, add it into the mixing tank while stirring, continue stirring for about 4 hours, measure the pH value to 1.5, and stop stirring.

[0032] 3. Filtrate for solid-liquid separation, put the filter residue away for future use, put the filtrate into the neutralization and hydrolysis mixing tank, start the mixer, and stir at a stirring speed of 65 rpm.

[0033] 4. Slowly add NH4HCO3 powder while stirring, neutralize once, and test the pH value of the solution. When the pH is 4, stop adding NH4HCO3, continue stirring until no bubbles are generated, and stop stirring.

[0034] 5. Filtrate solid-liquid separation, put the filtrate into the neutra...

Embodiment 2

[0049] 1. Weigh 1000g of the leached filter press residue, measure 2 / 3 of the water in the "eighth item" circulating bucket in the example (1), put it into a pulverizer to pulverize it into a pulp, and pass it through a 100-mesh sieve, and the undersieve enters The compound mixing tank, the sieved material enters the small grinder, adds the remaining water in the "eighth item" circulating bucket of the previous example to grind together, and then passes through the 100-mesh sieve and adds the compound mixing tank together, and starts the mixer to stir at a stirring speed of 65 rpm .

[0050] 2. Measure 98% H2SO4500ml, add it into the compound mixing tank while stirring, continue stirring for 4 hours, measure the pH value to 1.0, and stop stirring.

[0051] 3. Filtration solid-liquid separation: put the filter residue away for use, put the filtrate into the neutralization hydrolysis mixing tank, start the mixer, and stir at a stirring speed of 65 rpm.

[0052] 4. Slowly add (N...

Embodiment 3

[0069] 1. Weigh 1000g of the leached filter press residue, measure 2 / 3 of the water in the circulating bucket of "Example (2) Item 8", put it into a pulverizer to pulverize it into a pulp, and pass it through a 100-mesh sieve, and the under-sieve enters In the compounding mixing tank, the supernatant and the remaining water in the "Example (2) Item 8" circulating water tank are added into a small grinder for grinding, and then all pass through a 100 mesh screen and added to the compounding mixing tank. Start the mixer to stir at a stirring speed of 65 rpm.

[0070] 2. Measure 98% H2SO4, add it into the compound mixing tank while stirring, continue stirring for 4 hours, measure the pH value to 0.5, and stop stirring.

[0071] 3. Filtrate for solid-liquid separation, put the filter residue aside for use, put the filtrate into the neutralization and hydrolysis mixing tank, and start the mixer to stir at a stirring speed of 65 rpm.

[0072] 4. Slowly add ammonia water containing ...

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Abstract

The invention relates to a method for recycling waste residue in manganese industry production. The method comprises the specific following steps: (1) pre-processing filter residue; (2) adding acid and leaching; (3) carrying out filtering and solid-liquid separation on ore slurry; (4) recovering hematite powder; (5) recovering manganese carbonate concentrate; and (6) preparing a nitrogen-phosphorus compound fertilizer base material. By the method, hematite powder, manganese carbonate concentrate and the nitrogen-phosphorus compound fertilizer base material can be recovered from leached press-filtered residue, the process is simple and is easy to achieve industrialization and meanwhile, the content of the heavy metal ingredients is in completely in conformity with national associated standards, treated wastewater and waste residue are free of harmful ingredients such as heavy metals, the environmental pressure is alleviated and the method has great promotional values.

Description

technical field [0001] The invention belongs to the comprehensive utilization technology of waste slag, in particular to a method for making various chemical products by recycling leached filter press residue in the production of electrolytic manganese. Background technique [0002] As one of the important strategic resources of the national economy, manganese has also been regarded as a national strategic resource in my country during the "Eleventh Five-Year Plan" period. At present, manganese is mainly obtained through electrolysis and reduction methods, and the production of manganese by electrolysis accounts for more than 95% of the total production of pure manganese. The production enterprises of electrolytic manganese metal use rhodochrosite and pyrolusite as raw materials, which are leached by sulfuric acid → added Oxidizing ferrous iron by oxidant → adding ammonia water to neutralize and hydrolyze to remove iron → leaching filter press (primary press filter residue) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B47/00C01B33/10C05G1/00
CPCY02P10/20
Inventor 赵阳臣
Owner 大新县信锰矿业有限公司
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