Method for recycling manganese and lead in electrolytic manganese anode mud

A technology of anode slime and electrolytic manganese, which is applied in the field of metallurgy, can solve problems such as stacking pollution of electrolytic manganese anode slime, and achieve the effects of creating economic value, reducing production costs, and saving raw materials

Inactive Publication Date: 2015-11-11
DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for recovering manganese and lead from electrolytic manganese anode slime, which can not only recycle electrolytic manganese ano

Method used

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  • Method for recycling manganese and lead in electrolytic manganese anode mud
  • Method for recycling manganese and lead in electrolytic manganese anode mud
  • Method for recycling manganese and lead in electrolytic manganese anode mud

Examples

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Example Embodiment

[0025] Example 1:

[0026] The method for recovering manganese and lead from electrolytic manganese anode slime includes the following steps:

[0027] (1) Reduction leaching of electrolytic manganese anode slime: Add anolyte, waste molasses and concentrated sulfuric acid solution to electrolytic manganese anode slime successively for reduction reaction. The mass ratio of electrolytic manganese anode slime to anolyte is 1:2. The solid-liquid mass ratio of the reducing agent is 8:1, the mass ratio of electrolytic manganese anode slime to concentrated sulfuric acid is 1:1, and the reaction time is 6h, and then press filtration to obtain the leaching residue containing PbSO4 and the leaching solution containing MnSO4;

[0028] (2) Treatment of leaching residue: drying the leaching residue obtained above at 30°C to a moisture content of 5%, to obtain a lead concentrate product;

[0029] (3) Treatment of leachate: Collect the leachate obtained in step (1) and return to step (1) as anolyte ...

Example Embodiment

[0030] Example 2:

[0031] The method for recovering manganese and lead from electrolytic manganese anode slime includes the following steps:

[0032] (1) Reduction and leaching of electrolytic manganese anode slime: Add anolyte, industrial grade glucose and concentrated sulfuric acid solution to electrolytic manganese anode slime successively for reduction reaction. The mass ratio of electrolytic manganese anode slime to anolyte is 1:6, electrolytic manganese anode slime The solid-liquid mass ratio to the reducing agent is 20:1, the mass ratio of electrolytic manganese anode slime to concentrated sulfuric acid is 8:1, and the reaction time is 10h, and then press filtration to obtain the leaching residue containing PbSO4 and the leaching solution containing MnSO4;

[0033] (2) Treatment of the leaching residue: drying the leaching residue obtained above at 35°C to a moisture content of 4%, to obtain a lead concentrate product;

[0034] (3) Treatment of leachate: Collect the leachate ...

Example Embodiment

[0035] Example 3:

[0036] The method for recovering manganese and lead from electrolytic manganese anode slime includes the following steps:

[0037] (1) Reduction and leaching of electrolytic manganese anode slime: Add anolyte, waste molasses and concentrated sulfuric acid solution to electrolytic manganese anode slime successively for reduction reaction. The mass ratio of electrolytic manganese anode slime to anolyte is 1:3. The solid-liquid mass ratio of the reducing agent is 10:1, the mass ratio of the electrolytic manganese anode slime to the concentrated sulfuric acid is 2:1, and the reaction time is 8 hours, and then press filtration to obtain the leaching residue containing PbSO4 and the leaching solution containing MnSO4;

[0038] (2) Treatment of the leaching residue: drying the leaching residue obtained above at 32°C to a moisture content of 3%, to obtain a lead concentrate product;

[0039] (3) Treatment of leachate: Collect the leachate obtained in step (1) and return t...

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Abstract

The invention discloses a method for recycling manganese and lead in electrolytic manganese anode mud. The method is characterized by comprising the following steps that (1) the electrolytic manganese anode mud is subjected to reduction leaching, anode liquor, reducing agents and a concentrated sulfuric acid solution are sequentially added into the electrolytic manganese anode mud to be subjected to a reduction reaction for 6-10 h, then filter pressing is conducted, and leaching residues containing PbSO4 and leaching liquor containing MnSO4 are obtained; (2) the leaching residues are processed, the obtained leaching residues are aired at the temperature of 30-35 DEG C until the moisture content is smaller than or equal to 5%, and then a lead concentrate product can be obtained; and (3) the leaching liquor is processed, the leaching liquor obtained in the step (1) is collected and then is reused as anode liquor to be recycled according to the step (1). The problem of stacking pollution of the electrolytic manganese anode mud is solved, separation of manganese and lead can be achieved, valuable lead is recycled, and economic value is created. The method is easy to operate, has feasibility and has certain popularization value in the production of the field.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular to a method for recovering manganese and lead from electrolytic manganese anode slime. Background technique [0002] Electrolytic manganese anode slime is a by-product produced on the anode plate during the production of electrolytic manganese metal. Because it contains various impurities such as Pb, Se, Co, and Ni, the main polluting elements are Pb and Se. The mineral composition of electrolytic manganese anode slime and The structure is complex, and the symbiotic relationship between lead and manganese hydrated oxides is very close. Most manganese oxides are formed of colloidal and colloidal rings, and the crystal form is not well developed. It is impossible to purify manganese and recover lead by mechanical separation. At present, except for a very small amount of anode slime being used as fertilizer raw materials and cement coagulant, most of them are dumped or simply used directly as...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B13/00C25C1/10
CPCY02P10/20
Inventor 杨勇秦旭芝黄冠汉刘栋柱邓永光明宪权韦旭甜严超梁敏吴晓丹何溯结刘登祥
Owner DAXIN MANGANESE MINE BRANCH OF CITIC DAMENG MINING IND
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