Preparation process of cobaltosic oxide for continuous production of batteries

A preparation technology of tricobalt tetroxide, which is applied in the directions of battery electrodes, circuits, inorganic chemistry, etc., can solve the problems of continuous preparation process and continuous calcination with little involvement, so as to improve the unit production capacity of equipment, good uniformity, and solution cobalt concentration high effect

Active Publication Date: 2012-12-12
GANZHOU TENGYUAN COBALT INDAL
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Problems solved by technology

In the prior art, there are many discussions on the control of various operating conditions in the preparation of the precursor cobalt carbonate, but there are few references to the continuous preparation process and continuous calcination.

Method used

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  • Preparation process of cobaltosic oxide for continuous production of batteries
  • Preparation process of cobaltosic oxide for continuous production of batteries
  • Preparation process of cobaltosic oxide for continuous production of batteries

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the process of the present invention will be further elaborated below.

[0021] A preparation process for continuous production of tricobalt tetroxide for batteries, the production of tricobalt tetroxide is realized through the following steps:

[0022] (1) Preparation of cobalt solution: Cobalt ore is used as raw material, and a cobalt solution containing 100-140g / l cobalt is obtained through sulfuric acid leaching, oxidation and iron removal, extraction and impurity removal, and separation of cobalt, nickel and magnesium;

[0023] (2) Preparation of precipitant: Select one of qualified sodium bicarbonate, sodium carbonate, ammonium bicarbonate and ammonium carbonate, dissolve it in water, and prepare a precipitant solution with a concentration of 100-300g / l;

[0024] (3) Lithium carbonate synthesis: Add the cobalt solution and the precipitan...

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Abstract

A preparation process of cobaltosic oxide for continuous production of batteries is a process for preparing the cobaltosic oxide by using a cobalt contained material to continuously synthesize cobalt carbonate and continuously roasting and resolving in an oxidizing atmosphere. Continuous production of the cobaltosic oxide can be completed through several steps of preparation of cobalt solution, preparation of precipitator, lithium carbonate synthesizing, ageing, filtering and washing, burning and after treatment. The preparation process continuously synthesizes the cobalt carbonate, and continuously roasts and resolves the cobaltosic oxide, is apt to control technical indexes in a production procedure, can achieve automatic production, is favorable for reduction of labor intensity, improves efficiency of labor and lowers cost. Produced products are high in purity, excellent in physical performance indexes and good in stability and consistency.

Description

technical field [0001] The invention relates to the field of preparation of metal oxides, in particular to a process for continuously synthesizing cobalt carbonate with cobalt-containing materials and continuously roasting and decomposing it in an oxidizing atmosphere to prepare tricobalt tetroxide. Background technique [0002] As an important strategic metal, cobalt is widely used in industrial and military fields. Since the 1990s, the rechargeable battery industry, especially the rapid growth of cobalt consumption in the lithium-ion battery and nickel-metal hydride battery industry, has become the largest consumer of cobalt. [0003] Cobalt tetroxide is one of the most important raw materials for the production of lithium cobalt oxide and lithium nickel cobalt manganese oxide, which are the positive electrode materials of lithium-ion batteries. There are also special requirements for physical indicators such as fluidity, especially for the stability and consistency of ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/525C01G51/00
CPCY02E60/122Y02E60/10
Inventor 谢福标蒋光勤吴阳红
Owner GANZHOU TENGYUAN COBALT INDAL
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