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A kind of method for preparing electrolytic manganese

A technology for electrolysis of manganese and rhodochrosite, which is applied to the improvement of process efficiency, photographic technology, instruments and other directions, can solve problems such as waste of manganese resources, and achieve the effects of saving energy consumption, improving reaction temperature and reaction speed, and increasing the concentration of manganese sulfate.

Active Publication Date: 2018-02-23
贵州金瑞新材料有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And these manganese sulfide ores (or manganese sulfide-containing waste residues) contain higher grade Mn, and also contain reducing S 2- , so it has certain application potential, but these manganese sulfide ores have not been well utilized at present, resulting in a waste of manganese resources

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  • A kind of method for preparing electrolytic manganese

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Embodiment 1

[0039] A method for preparing electrolytic manganese of the present invention, comprising the following steps:

[0040] (1) In the beaker, first add electrolytic manganese to return to the anolyte (containing MnSO 4 Concentration 37g / L, containing H 2 SO 4 Concentration 36g / L), 83g manganese sulfide ore (this manganese sulfide ore is a primary mineral, the mass content of MnS in this manganese sulfide ore is 83.98%, and the total mass of Mn is 54.97%) and 86g manganese oxide ore (this manganese oxide ore is anode slime, the MnO in manganese oxide ore 2 The mass content of Mn is 83.35%, and the total mass content of Mn is 44.87%), and then adding the concentrated sulfuric acid (the addition of the concentrated sulfuric acid is 230g / L) with a mass concentration of 96% carries out enhanced redox leaching, and the leaching temperature is 93 ℃, leaching for 4h;

[0041] (2) in the beaker, add electrolytic manganese and return anolyte and 223g rhodochrosite (this rhodochrosite i...

Embodiment 2

[0050] A method for preparing electrolytic manganese of the present invention, comprising the following steps:

[0051] (1) in the beaker, first add the electrolytic manganese gained in Example 1 and return to the anolyte (containing MnSO 4 Concentration 38g / L, containing H 2 SO 4 Concentration 36g / L), 83g manganese sulfide ore (this manganese sulfide ore is a primary mineral, the mass content of MnS in this manganese sulfide ore is 83.98%, and the total mass of Mn is 54.97%) and 93g manganese oxide ore (this manganese oxide ore is anode slime, MnO in the manganese oxide ore 2 The mass content of Mn is 83.35%, and the total mass content of Mn is 44.87%), and then adding the concentrated sulfuric acid (the addition of the concentrated sulfuric acid is 200g / L) with a mass concentration of 98% carries out enhanced redox leaching, and the leaching temperature is 92 ℃, The leaching time is 4h;

[0052] (2) in the beaker, add electrolytic manganese again and return anolyte and 2...

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Abstract

The invention discloses a method for preparing electrolytic manganese. The method comprises the following steps: (1) adding an electrolytic manganese return anode solution, manganese sulfide ore and manganese oxide ore into a reactor, and then adding concentrated sulfuric acid for oxidation-reduction leaching; (2) adding the electrolytic manganese return anode solution and rhodochrosite into the reactor where the oxidation-reduction leaching in step (1) is completed, so as to continue leaching; (3) adjusting the pH value of a leaching solution obtained in step (2) to be 6-7, and injecting air for impurity removal; (4) filtering reaction slurry obtained after the impurity removal, so as to obtain a qualified solution and a filter cake; and (5) electrolyzing the qualified solution to obtain an electrolytic manganese product and an electrolytic manganese anode solution. According to the technology adopted by the method disclosed by the invention, manganese resources in both the manganese sulfide ore and the manganese oxide ore are sufficiently utilized for electrolytic manganese production; the technical problem that manganese resources in the manganese sulfide ore are difficult to recover can be solved; and meanwhile, the recycling rate of manganese resources in anode mud is improved. Therefore, the method is of important meaning to solve the problem that China is short of manganese resources.

Description

technical field [0001] The invention relates to the field of non-ferrous metal hydrometallurgy, in particular to a method for preparing electrolytic manganese by utilizing manganese sulfide ore and manganese oxide ore. Background technique [0002] At present, in the field of metallurgy, the degree of recycling and utilization of manganese is very low, and it is almost a pure consumption resource. With the continuous mining of manganese ore, the resources of rich manganese ore and high-quality manganese ore in my country will gradually be exhausted, and the mining difficulty will continue to increase. The sample yield is low, especially the manganese ore grade is reduced to less than 15%, and it has the mineralogy characteristics of high impurity content, fine distribution of useful minerals, high content of gangue minerals, and complex ore sample structure. In recent years, manganese ore resources with manganese grade above 15% have been nearly exhausted, and the grade of m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C25C1/10
CPCC22B3/08C25C1/10Y02P10/20
Inventor 熊雪良吕志伟时启龙周建波何利民叶万奇李重洋
Owner 贵州金瑞新材料有限责任公司
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