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Method for preparing manganous-manganic oxide from lean manganese ore

A technology of trimanganese tetroxide and poor manganese ore, which is applied in the direction of manganese oxide/manganese hydroxide, etc., can solve the problems of difficult electrolytic manganese slag treatment, environmental pollution, and difficult production of manganese ore, so as to realize repeated utilization, simple process, The effect of low processing cost

Pending Publication Date: 2022-07-22
贵州大龙汇成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing trimanganese tetroxide by using poor manganese ore, which can simultaneously solve the problems that it is difficult to produce high-purity trimanganese tetraoxide from lean manganese ore, the treatment of electrolytic manganese slag is difficult and it is easy to cause environmental pollution

Method used

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  • Method for preparing manganous-manganic oxide from lean manganese ore
  • Method for preparing manganous-manganic oxide from lean manganese ore
  • Method for preparing manganous-manganic oxide from lean manganese ore

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Embodiment 1

[0049] like figure 1 Shown, a kind of method utilizing lean manganese ore to prepare manganese tetroxide, comprising the following steps:

[0050] (1) Grind the lean manganese ore to a fineness of -0.074mm accounting for more than 95%, add concentrated sulfuric acid with a mass concentration of 92.5%, then add hydrogen peroxide as an oxidant, oxidize ferrous iron into ferric iron, add sodium carbonate as a Neutralizer, after solid-liquid separation, manganese sulfate solution and leached manganese slag are obtained. The leached manganese slag does not contain ammonia nitrogen, which is more advantageous for making building materials;

[0051] (2) adding fumet sodium (SDD) to the manganese sulfate solution, removing heavy metals, solid-liquid separation, obtaining purified liquid and sulfide slag, realizing the classification of manganese slag, and the sulfide slag is used to extract nickel-cobalt-manganese-zinc valuable elements;

[0052] (3) adding electrolytic additives (se...

Embodiment 2

[0076] A method for utilizing lean manganese ore to prepare manganese tetroxide, comprising the following steps:

[0077] (1) Grind the lean manganese ore to a fineness of -0.074mm accounting for more than 95%, add concentrated sulfuric acid with a mass concentration of 92.5%, and then add manganese dioxide ore powder as an oxidant to oxidize ferrous iron into ferric iron, add Sodium bicarbonate is used as a neutralizing agent. After solid-liquid separation, manganese sulfate solution and leached manganese slag are obtained. The leached manganese slag does not contain ammonia nitrogen, which is more advantageous for making building materials;

[0078] (2) adding fumet sodium (SDD) and sodium sulfide to the manganese sulfate solution, removing heavy metals, separating solid-liquid, obtaining purified liquid and sulfide slag, realizing manganese slag classification, and the sulfide slag is used to extract nickel, cobalt, manganese, and zinc valuable elements;

[0079] (3) adding...

Embodiment 3

[0082] A method for utilizing lean manganese ore to prepare manganese tetroxide, comprising the following steps:

[0083] (1) Grind the lean manganese ore to a fineness of -0.074mm accounting for more than 95%, add concentrated sulfuric acid with a mass concentration of 92.5%, and then add hydrogen peroxide as an oxidant to oxidize ferrous iron into ferric iron, add sodium carbonate, The mixture of sodium bicarbonate is used as a neutralizing agent. After solid-liquid separation, manganese sulfate solution and leached manganese slag are obtained. The leached manganese slag does not contain ammonia nitrogen, which is more advantageous for making building materials;

[0084] (2) adding sodium fumet (SDD) and barium sulfide to the manganese sulfate solution, removing heavy metals, separating solid-liquid, obtaining purified liquid and sulfide slag, and realizing the classification of manganese slag, and the sulfide slag is used to extract nickel-cobalt-manganese-zinc valuable elem...

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Abstract

The invention provides a method for preparing manganous-manganic oxide by utilizing lean manganese ore, which comprises the following steps: S1, carrying out ore grinding treatment on the lean manganese ore, adding concentrated sulfuric acid, an oxidizing agent and a neutralizing agent, and carrying out solid-liquid separation to obtain a manganese sulfate solution and leaching manganese slag; the neutralizer is one or a combination of two of carbonate and bicarbonate; s2, a vulcanizing agent is added into the manganese sulfate solution, heavy metal is removed, solid-liquid separation is conducted, purified liquid and vulcanized slag are obtained, the vulcanized slag is used for extracting nickel, cobalt, manganese and zinc elements, and a battery-grade nickel-cobalt-manganese ternary precursor is prepared; s3, an electrolytic additive is added into the purified liquid for electrolysis, electrolytic manganese metal is obtained, obtained anode liquid is not returned for liquid preparation, a manganese-ammonium-containing compound fertilizer is prepared in an open circuit mode, and obtained anode slag is used for extracting manganese and lead elements; and S4, performing crushing treatment on the electrolytic manganese metal to obtain manganese metal powder, adding the manganese metal powder into an ammonium system, then introducing air for oxidation, and sequentially performing washing and drying treatment on the obtained product to obtain a manganous-manganic oxide product.

Description

technical field [0001] The invention relates to a method for preparing manganese tetroxide by utilizing lean manganese ore. Background technique [0002] my country is rich in manganese ore resources. The proven reserves of manganese ore in the country are about 1.551 billion tons, of which Guizhou accounts for 28%. The manganese ore resources in Guizhou are mainly concentrated in the Tongren area. There are trace amounts of nickel and cobalt associated with the manganese ore. The grade is low, but the total reserves are large, which is of great market development value. In addition, with the rapid development of the lithium-ion secondary battery industry in recent years, a series of high-quality electronic chemicals such as lithium manganate cathode materials have emerged, and the purity of manganese tetroxide as the main raw material has become more and more popular Pay attention to. [0003] Commonly used manganese ore purification methods include flocculation precipita...

Claims

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Application Information

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IPC IPC(8): C01G45/02
CPCC01G45/02C01P2006/80
Inventor 董雄文彭天剑
Owner 贵州大龙汇成新材料有限公司
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