Method for preparing analcite from electrolytic manganese residues

A technology of electrolytic manganese slag and analcime, which is applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problems of acid and alkali consumption, high requirements for equipment corrosion resistance, high cost, etc., and achieve the goal of saving energy and reducing corrosion resistance Requirements, Effects Favorable for Recycling

Active Publication Date: 2019-01-15
肇庆市珈旺环境技术研究院
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  • Application Information

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Problems solved by technology

But this method is to make full use of the useful components of electrolytic manganese slag, adopts nitric acid solution to activate it; adopts sodium hydroxide as alkaline medium to carry out alkali fusion-hydrothermal synthesis method to electrolytic manganese slag to prepare zeolite subsequently, acid-base consumption, High cost and high requirements for corrosion resistance of equipment

Method used

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  • Method for preparing analcite from electrolytic manganese residues
  • Method for preparing analcite from electrolytic manganese residues
  • Method for preparing analcite from electrolytic manganese residues

Examples

Experimental program
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Embodiment 1

[0041] The electrolytic manganese slag in the following examples all come from the No. 2 Metal Manganese Plant of CITIC Dameng Mining Co., Ltd. The process is to roast manganese dioxide raw ore powder and coal in a rotary kiln at high temperature to convert it into divalent manganese, and then leaching it with sulfuric acid. The electrolytic manganese slag was obtained by plate and frame filter press.

[0042] (1) Dry the electrolytic manganese slag at 105°C, and grind it into powder with a 3000r / min ball mill for 5 minutes;

[0043] (2) Dissolve 100g of powdered manganese slag in 150mL of distilled water, add 12mL of analytically pure hydrogen peroxide with a mass fraction of 30%, stir in a water bath at 90°C for 2 hours, then add 200mL of distilled water and 80g of oxalic acid dihydrate crystals, After reacting for 24 hours under magnetic rotor stirring, filter, and retain the solid residue and supernatant respectively;

[0044] (3) Mix the manganese slag after iron removal...

Embodiment 2

[0055] (1) Dry the electrolytic manganese slag at 105°C, and grind it into powder with a 3000r / min ball mill for 5 minutes;

[0056] (2) Dissolve 100g of powdered manganese slag in 150mL of distilled water, add 12mL of analytically pure hydrogen peroxide with a mass fraction of 30%, stir in a water bath at 90°C for 2 hours, then add 200mL of distilled water and 80g of oxalic acid dihydrate crystals, After reacting for 24 hours under magnetic rotor stirring, filter, and retain the solid residue and supernatant respectively;

[0057] (3) Mix the manganese slag after iron removal with sodium carbonate powder (mass ratio 8g:6.4g), and calcinate at 800°C for 2h;

[0058] (4) Add 100mL of absolute ethanol to the supernatant after step (2) and place it in the dark for crystallization. Suction filter after the crystallization is complete, wash the crystal with 50% ethanol, drain it, and dry it at 60°C to obtain Potassium trioxalate iron (Ⅲ) crystals;

[0059] ⑸Add 0.2049gAl to 10g m...

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Abstract

The invention discloses a method for preparing analcite from electrolytic manganese residues. The method is characterized in that electrolytic manganese residue powder is oxidized and complexed to effectively remove iron; the iron recovery is realized; the manganese residue subjected to iron removal is subjected to calcination activation and then reacts with aluminum oxide, sodium hydroxide and water; crystallization is performed to obtain high-pure-phase analcite. The method has the advantages that the steps are simple; the conditions are mild; the cost is low; when the electrolytic manganeseresidue is used for preparing the high-pure-phase analcite, the iron can also be recovered; the resource utilization of the electrolytic manganese residue is really realized; the problem of environment protection caused by the electrolytic manganese residue is solved.

Description

technical field [0001] The invention relates to a method for treating electrolytic manganese slag, in particular to a method for recycling electrolytic manganese slag to produce high value-added zeolite and simultaneously efficiently separating and recovering iron, which belongs to the technical field of solid waste resource utilization. Background technique [0002] Electrolytic manganese slag refers to the acidic filter residue produced by electrolysis of manganese dioxide by adding sulfuric acid solution to manganese carbonate ore powder. Hazardous substances infiltrate groundwater or pollute soil, causing pollution to water, soil and ecological environment. Therefore, with the rapid development of the electrolytic manganese industry, the harmless treatment and resource utilization of manganese slag has become an urgent problem to be solved in the environmental protection and environmental engineering industry. [0003] At present, most of the relevant reports on the tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02
CPCC01B39/02C01P2002/72C01P2002/85C01P2004/03C01P2006/12C01P2006/14
Inventor 侯浩波李徐立曾越陈宇驰陈方远李逸馨李嘉豪
Owner 肇庆市珈旺环境技术研究院
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