Method and apparatus for preparing high-intensity cobaltic-cobaltous oxide power

Abstract

The invention provides a method for preparing Co3O4 (tricobalt tetreoxide) powder with high density and equipment thereof. Anhydrous CoCl2 is taken as raw material, the granularity of which is 100 to 400 meshes, and added into a reaction furnace to be fully mixed with oxidizing gas that contains water vapour at a motion state under 500 to 1000 DEG C for reaction so as to generate the Co3O4 powder. The equipment comprises a furnace body, the upper part of which is a drum body provided with a feeding tube and a discharging tube of airflow and products; the lower part of the furnace body is a conical tube, the bottom end of which is provided with a slag discharging tube, and the conical surface of the lower end of the conical tube is connected with a warm-air tube. The technique process of the method and the equipment of the invention are simple, the process system of the invention is convenient for controlling and regulating, reaction products only contain two phases of gas and solid, which are easy to be separated, then treatment procedures are carried out, namely, separation of the gas and the solid, washing, drying and classification of the powder, recovery of HCl gas, etc. are connected with the prior art, therefore, the quality of the products is high and no pollution is caused in the production process.

Description

Technical field [0001] The invention relates to a method and equipment for preparing high-density cobalt tetroxide powder. The raw material is cobalt chloride. Background technique [0002] Cobalt tetroxide is the cathode material LiCoO for manufacturing lithium ion batteries 2 Raw materials. At present, the main method of industrial production of cobalt tetroxide is the wet precipitation-calcination method, which has two specific processes. One is to use ammonium bicarbonate as a precipitant, add it to the cobalt salt solution to form a basic cobalt carbonate precipitate, filter, wash and dry, and then calcinate at a high temperature of about 800°C to obtain a cobalt tetroxide product. The second is to use NaOH as a neutralizing agent, and under the conditions of controlling temperature and pH value, Co(OH) is hydrolyzed and precipitated from the cobalt salt solution. 2 , And then calcined at a high temperature of about 800 ℃ to obtain cobalt tetroxide product. The advantages of...

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Problems solved by technology

[0005] The object of the present invention is to propose a method and equipment for preparing high-density cobalt tetroxide in view of the shortcomings of poor product quality, pollution, large investment, and difficulty in implementation in the prior art for preparing cobalt tetroxide

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