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Production method of electrolytic manganese metal

A technology of electrolytic manganese metal and production method, which is applied in the direction of photography technology, equipment, photography auxiliary technology, etc., can solve the problems of high product S, high power consumption, and difficulty in removing impurities from heavy metals, achieve good economic and social benefits, and reduce Production cost, the effect of rational utilization

Active Publication Date: 2013-04-03
GUANGXI NON FERROUS METALS GROUP HUIYUANMENGYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For a long time, the manganese industry has used manganese carbonate ore as the main raw material, but a large amount of manganese oxide-manganese carbonate ore is seldom paid attention to. However, Guangxi is rich in manganese ore resources, ranking first in the country's manganese ore reserves. The main raw materials are oxide ore, manganese carbonate Ore, manganese oxide-manganese carbonate layered ore exist, but the problems such as high product S, high power consumption, and difficulty in removing impurities of heavy metals are encountered in the production test process of the two-mine method and the multi-mine method. Therefore, it is necessary to provide a kind of Manganese oxide-manganese carbonate layered ore is a method for producing electrolytic manganese metal, and solves the problems of high product S, high power consumption, and difficulty in removing impurities from heavy metals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Liquid preparation

[0028] (1) Leaching compound

[0029] The dried, crushed and pulverized manganese dioxide ore, pyrite and manganese carbonate mixed by weight ratio 1:0.25:0.2 (-120 mesh ≥ 90%) from the grinding workshop are added to the In the leaching and compounding tank, add sulfuric acid with a concentration of 98% to prepare a 100g / L dilute sulfuric acid solution, and at the same time add sulfuric acid at a weight ratio of 1:0.4 between the mixed mineral powder and sulfuric acid, and redox reaction occurs at a temperature of 90°C For 4 hours, in order to ensure the temperature of the leaching and compounding reaction, the steam pipe in the tank is used to directly heat.

[0030] Add appropriate amount of ammonium sulfate during the heating and leaching process, so that the concentration of ammonium sulfate reaches the solution index requirement, that is, 100-120g / l.

[0031]After the leaching reaction is finished, qualitatively detect whether the ferrous ...

Embodiment 2

[0069] 1. Liquid preparation

[0070] (1) Leaching compound

[0071] The dried, crushed and pulverized manganese dioxide ore, pyrite and manganese carbonate ore mixed by weight ratio 1:0.32:0.25 (-120 mesh ≥ 90%) from the grinding workshop are added to the In the leaching and compounding tank, add sulfuric acid with a concentration of 98% to prepare a 100g / L dilute sulfuric acid solution, and at the same time add sulfuric acid at a weight ratio of 1:0.5 between the mixed mineral powder and sulfuric acid, and redox reaction occurs at a temperature of 93°C For 5 hours, in order to ensure the temperature of the leaching and compounding reaction, the steam pipe in the tank was used to directly heat.

[0072] Add appropriate amount of ammonium sulfate during the heating and leaching process, so that the concentration of ammonium sulfate reaches the solution index requirement, that is, 100-120g / l.

[0073] After the leaching reaction is finished, qualitatively detect whether the f...

Embodiment 3

[0111] 1. Liquid preparation

[0112] (1) Leaching compound

[0113] The dried, crushed and pulverized manganese dioxide ore, pyrite and manganese carbonate mixed by weight ratio 1:0.4:0.3 ore powder (-120 mesh ≥ 90%) pumped from the grinding workshop is added to the In the leaching and compounding tank, add sulfuric acid with a concentration of 98% to prepare a 100g / L dilute sulfuric acid solution, and at the same time add sulfuric acid at a weight ratio of 1:0.6 between the mixed mineral powder and sulfuric acid, and redox reaction occurs at a temperature of 95°C 6 hours, in order to ensure the temperature of the leaching and compounding reaction, the steam pipe in the tank is used to directly heat.

[0114] Add appropriate amount of ammonium sulfate during the heating and leaching process, so that the concentration of ammonium sulfate reaches the solution index requirement, that is, 100-120g / l.

[0115] After the leaching reaction is finished, qualitatively detect whether...

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Abstract

The invention discloses a production method of electrolytic manganese metal, which sequentially comprises the following steps: (1) simultaneously adding mixed ore powder of manganese dioxide ores, sulfurous iron ores and manganese carbonate ores and sulfuric acid into a leaching combination tank, heating to 90-95 DEG C, performing leaching combination reaction for 4-6 hours, and performing solid-liquid separation to obtain a rough manganese sulfate solution; (2) performing two-stage purification on the rough manganese sulfate solution to remove impurities, wherein in the primary purification process, SDD or BaS is added for impurity removal, and then aluminum sulfate is added for purification; and in the secondary purification process, 10-30% of deep impurity removal agent is added, and then ammonium sulfide is added for zinc removal; reacting for 1-2 hours, checking and regulating the pH value to 6.0-8.0, performing pressure filtration, then transferring into a standing tank, and standing; and (3) injecting the purified manganese sulfate solution into an electrolytic tank, controlling the pH value of an electrolytic tank solution to be 7.0-8.0, and electrolyzing for at least 24 hours to obtain the electrolytic manganese metal product. According to the method disclosed by the invention, manganese ore resources are reasonably utilized, and the production cost is lowered.

Description

technical field [0001] The invention relates to a production method of electrolytic metal manganese, in particular to a method for producing electrolytic metal manganese by leaching manganese oxide ore and manganese carbonate ore by "multi-ore method". Background technique [0002] Electrolytic manganese metal is widely used in metallurgy, medicine, electronics, communication and other fields. With the development of science and technology, the application of electrolytic manganese continues to expand, and the market demand grows by about 15% annually. The annual production capacity of electrolytic manganese in my country can reach 800,000 tons, accounting for 80% of the world's total production. Over the years, most of my country's electrolytic manganese has been used for export, mainly to Japan, South Korea, Europe and the United States and other countries. [0003] Electrolytic manganese metal is obtained from manganese ore by acid leaching to obtain manganese salt, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/10C22B3/04C22B3/44C22B3/22
Inventor 陈奇志万维华李学峰樊洪胜曾德超
Owner GUANGXI NON FERROUS METALS GROUP HUIYUANMENGYE
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