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Method for stabilizing treatment on soluble manganese ions and soluble liquid selenium in electrolyzed manganese slag

A technology for stabilization treatment and electrolysis of manganese slag, applied in the fields of pollution reduction and environmental engineering, can solve the problems of polluted water and soil, polluted groundwater, etc., and achieve the effect of protecting the environment, solving the pollution environment, and having a wide range of raw material sources.

Inactive Publication Date: 2012-11-28
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the waste residue is only treated by stacking. Under the leaching action of free water such as rainwater and surface water, the soluble manganese ions and soluble selenium in the waste residue will easily migrate to the surrounding water body and soil, polluting the water body and soil. In severe cases May pollute ground water

Method used

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  • Method for stabilizing treatment on soluble manganese ions and soluble liquid selenium in electrolyzed manganese slag
  • Method for stabilizing treatment on soluble manganese ions and soluble liquid selenium in electrolyzed manganese slag

Examples

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Effect test

Embodiment 1

[0045] A method for stabilizing treatment of soluble manganese ions and soluble selenium in electrolytic manganese slag includes the following steps:

[0046] Step 1: Crush, disperse, and dry the newly discharged electrolytic manganese slag to obtain material I;

[0047] Step 2: Ball mill the material I, and add triethanolamine, the added amount of the triethanolamine is 0.5% of the mass of the material I, to obtain the material II;

[0048] Step 3. Add alumina to the material II, the addition amount of the alumina is 2% of the mass of the material II; after stirring evenly, slowly add clear water several times, the clear water is misty, and the addition amount is 40% of the mass of the mixture after adding clear water, stir for 3 minutes; continue to add ferrous sulfate solution, the mass fraction of the ferrous sulfate solution is 15%, the added amount and the liquid-to-solid ratio of the material II is 1:20, stir 1min, get material III;

[0049] Step 4. Add lime powder to the mate...

Embodiment 2

[0053] A method for stabilizing treatment of soluble manganese ions and soluble selenium in electrolytic manganese slag includes the following steps:

[0054] Step 1: Crush, disperse, and dry the newly discharged electrolytic manganese slag to obtain material I;

[0055] Step 2: Ball mill the material I, and add triethanolamine, the added amount of the triethanolamine is 1% of the mass of the material I, to obtain the material II;

[0056] Step 3. Add alumina to the material II, the addition amount of the alumina is 2% of the mass of the material II; after stirring evenly, slowly add clear water several times, the clear water is misty, and the addition amount is 50% of the mass of the mixture after adding clear water, stir for 4 minutes; continue to add ferrous sulfate solution, the mass fraction of the ferrous sulfate solution is 20%, the added amount and the liquid-to-solid ratio of the material II is 1:25, stir 2min, get material III;

[0057] Step 4. Add lime powder to the materi...

Embodiment 3

[0061] A method for stabilizing treatment of soluble manganese ions and soluble selenium in electrolytic manganese slag includes the following steps:

[0062] Step 1: Crush, disperse, and dry the newly discharged electrolytic manganese slag to obtain material I;

[0063] Step 2: Ball mill the material I, and add triethanolamine. The added amount of the triethanolamine is 0.8% of the mass of the material I to obtain the material II;

[0064] Step 3. Add alumina to the material II, the addition amount of the alumina is 2% of the mass of the material II; after stirring evenly, slowly add clear water several times, the clear water is misty, and the addition amount is 45% of the mass of the mixture after adding clear water, stir for 3 minutes; continue to add ferrous sulfate solution, the mass fraction of the ferrous sulfate solution is 18%, the added amount and the liquid-to-solid ratio of the material II is 1:22, stir 1min, get material III;

[0065] Step 4. Add lime powder to the mater...

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Abstract

The invention discloses a method for stabilizing treatment on soluble manganese ions and soluble liquid selenium in electrolyzed manganese slag. The method comprises the following steps of 1, crushing, dispersing and drying discharged electrolyzed manganese slag to obtain a material I, 2, adding a dispersing agent into the material I and carrying out ball-milling for 3 to 5min to obtain a material II, 3, adding a first reactant into the material II, uniformly stirring, adding clear water into the mixture, stirring for 3 to 4min, sequentially adding a second reactant into the mixture, and stirring for 1 to 2min to obtain a material III, 4, adding a third reactant into the material III, uniformly stirring, slowly adding clear water into the mixture by multiple processes, sequentially stirring for 2 to 3min, slowly adding an oxidant into the mixture, and sequentially stirring for 3 to 4min to obtain a material IV, and 5, drying the material IV by an oven. The method adopts raw materials having wide sources, has simple processes and good stabilizing treatment effects, and realizes environmental protection.

Description

Technical field [0001] The invention relates to the field of pollution emission reduction and environmental engineering, in particular to a method for stabilizing treatment of soluble manganese ions and soluble selenium in electrolytic manganese slag. Background technique [0002] Electrolytic manganese slag is the waste residue from the production of electrolytic metal manganese, which is the solid waste of manganese carbonate ore after acid leaching and pressure filtration. Due to the limited capacity of the filter press equipment, the filter cake still contains 30% acid leaching liquid. The acid leaching solution contains a large amount of soluble manganese ions. After determination, the soluble manganese ion content in the waste residue is 20000-30000mg / kg. In addition, due to the addition of selenium dioxide during the electrolysis production process, the tailings discharged from the The amount of selenium compounds. It is determined that the water-soluble selenium, exchang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 周长波王积伟杜兵段宁裴倩倩潘涔轩王璠于秀玲
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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