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Preparation process of cobaltosic oxide for continuous production of batteries

A preparation technology of cobalt trioxide, which is applied in battery electrodes, circuits, inorganic chemistry, etc., can solve the problems of continuous preparation process and continuous calcination with little involvement, and achieve the goal of improving the unit production capacity of equipment, improving labor efficiency and reducing costs Effect

Active Publication Date: 2014-11-05
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 it easy to understand the technical means, creative features, objectives and effects achieved by the present invention, the process of the present invention will be further explained below.

[0021] A preparation process for continuous production of cobalt tetroxide for batteries uses the following steps to realize the production of cobalt tetroxide:

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

[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: the cobalt solution and the precipitant solution are continuo...

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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 preparing cobalt tetroxide by continuous roasting and decomposition in an oxidizing atmosphere. Background technique [0002] As an important strategic metal, cobalt is increasingly 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-hydrogen battery industries, has now 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 manganate as cathode materials for lithium ion batteries. In addition to strict chemical composition requirements for cobalt tetroxide, the particle morphology, particle size composition and distribution, loose density...

Claims

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Application Information

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Patent Type & Authority Patents(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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