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Wet harmless treatment method for electrolytic manganese residues

A technology of harmless treatment and electrolysis of manganese slag, which is applied in the direction of protection devices against harmful chemicals, can solve the problems of increasing the difficulty of using electrolytic manganese slag, difficult implementation of industrialization, and increased difficulty of disposal, and achieves easy control , low cost, fast release process

Pending Publication Date: 2021-11-16
贵州省建筑材料科学研究设计院有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum sulfate added in this invention acts as a flocculant in this process. After adding the sodium chloride solution, additional soluble salts are introduced, which increases the difficulty of utilizing the electrolytic manganese slag, and the added aluminum sulfate and sodium chloride are Pure industrial raw materials, high cost, more difficult to dispose, difficult to implement industrialization

Method used

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  • Wet harmless treatment method for electrolytic manganese residues
  • Wet harmless treatment method for electrolytic manganese residues

Examples

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Effect test

Embodiment 1

[0025] A wet harmless treatment method for electrolytic manganese slag, which is to add hydrated alkaline materials to the electrolytic manganese slag after crushing, adjust the water temperature and pH, then stir, and the obtained mixture is fully reacted under the condition of slight negative pressure, and then solidified Separate the liquid and dry it.

[0026] Further, the alkaline material is quicklime.

[0027] Further, the wet harmless treatment method of electrolytic manganese slag specifically includes the following steps:

[0028] (1) After crushing the electrolytic manganese slag, add water and quicklime, adjust the water temperature to 70°C, and adjust the pH to 10;

[0029] (2) adopting the rotating speed to carry out high-speed stirring at a rotating speed of 2000 revs / min, the stirring time is;

[0030] (3) Fully react for 8 minutes under a slight negative pressure of 60kPa, separate solid and liquid, and dry at xx temperature. The water content of the electro...

Embodiment 2

[0032] A wet harmless treatment method for electrolytic manganese slag, which is to add hydrated alkaline materials to the electrolytic manganese slag after crushing, adjust the water temperature and pH, then stir, and the obtained mixture is fully reacted under the condition of slight negative pressure, and then solidified Separate the liquid and dry it.

[0033] Further, the alkaline material is slaked lime.

[0034] Further, the wet harmless treatment method of electrolytic manganese slag specifically includes the following steps:

[0035] (1) Add water and slaked lime after crushing the electrolytic manganese slag, adjust the water temperature to 60°C, and adjust the pH to 11;

[0036] (2) adopting the rotating speed to carry out high-speed stirring at a rotating speed of 1000 rev / min, the stirring time is;

[0037] (3) Fully react for 10 minutes under a slight negative pressure of 60kPa, separate solid and liquid, and dry at xx temperature. The water content of the elec...

Embodiment 3

[0039]A wet harmless treatment method for electrolytic manganese slag, which is to add hydrated alkaline materials to the electrolytic manganese slag after crushing, adjust the water temperature and pH, then stir, and the obtained mixture is fully reacted under the condition of slight negative pressure, and then solidified Separate the liquid and dry it.

[0040] Further, the alkaline material is carbide slag.

[0041] Further, the wet harmless treatment method of electrolytic manganese slag specifically includes the following steps:

[0042] (1) Add water and calcium carbide slag after crushing the electrolytic manganese slag, adjust the water temperature to 80°C, and adjust the pH to 9;

[0043] (2) adopting rotating speed is that the rotating speed of 2500 turns / min carries out high-speed stirring, and stirring time is;

[0044] (3) Fully react for 5 minutes under a slight negative pressure of 60kPa, separate solid and liquid, and dry at xx temperature. The water content ...

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Abstract

The invention belongs to the technical field of solid waste treatment, and particularly relates to a wet harmless treatment method for electrolytic manganese residues. Common materials or alkaline industrial waste residues in the nature are used for pretreating the electrolytic manganese residues, and harmful substances in the electrolytic manganese residues are fully removed through the combination of heating, stirring rotating speed increasing and a micro-negative pressure technology. The method is low in cost, the raw materials are easy to obtain, and the technological method is simple and easy to control; and compared with a traditional treatment method, the method makes electrolytic manganese residue treatment speed greatly increased, and the method is suitable for large-scale treatment of electrolytic manganese residue discharging enterprises.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to a wet and harmless treatment method for electrolytic manganese slag. Background technique [0002] Electrolytic manganese slag is the pickling press filter residue produced during the production process of electrolytic manganese by hydrometallurgy. It is the industrial solid waste discharged when the electrolytic manganese process is used to produce metal manganese. When manganese ore powder reacts with sulfuric acid and is heated to prepare manganese salt solution, it needs to be added A large amount of ammonia water is used as a buffer, and these ammonium ions and sulfuric acid residual acid are finally discharged into the electrolytic manganese slag, which belongs to acid waste. The electrolytic manganese slag is black and viscous, mainly composed of fine particles, and more than 80% of which have a particle size of less than 80 μm. It contains mangan...

Claims

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Application Information

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IPC IPC(8): A62D3/30A62D101/24A62D101/26
CPCA62D3/30A62D2101/26A62D2101/24
Inventor 刘恒波贺勇彭云峰彭建军贾韶辉陈建忠王勇高遇事薛涛
Owner 贵州省建筑材料科学研究设计院有限责任公司