Production method of cobaltous oxide for power battery

Abstract

The invention relates to a production method of cobaltous oxide for a power battery, comprising the following steps of: firstly reacting a cobalt chloride solution with an ammonium acid carbonate precipitant through a third-order reaction tank to generate basic cobaltous carbonate slurries; then filtering the slurries, slurrying, washing, drying, and protecting and crashing by an inert gas to obtain basic cobaltous carbonate powder; then decomposing through a positive pressure atmosphere, wherein a decomposing furnace is internally provided with 10 computer temperature control areas, air inside the decomposing furnace is driven by the inert gas before feeding, then a CO2 gas is continuously charged, and a material boat loaded with the basic cobaltous carbonate powder passes through the 10computer temperature control areas at the speed of 5 minutes per time so that basic cobaltous carbonate is decomposed to generate the cobaltous oxide for the power battery in the positive pressure atmosphere. The invention saves the energy and has low production cost; in addition, the cobaltous oxide has great high chemical purity and physical performance and can be used as powder materials of the power high-performance and high-power battery.

Description

technical field [0001] The invention relates to a production method for powder materials used in the battery industry, in particular to a production method for preparing cobalt oxide powder for power batteries, and the international classification number is C01G51 / 04. Background technique [0002] Although the invention patent with publication number of 101200309 "Production Method of Cobalt Oxide" can produce a kind of cobalt oxide with high cobalt content, the chemical purity of the product is not good, and in the product, nickel, iron, calcium, copper, manganese, zinc, The content of magnesium and other elements is too high, which cannot meet the requirements of various indicators for high-performance and high-power power batteries for battery materials. In addition, firstly, the reaction tank that generates the intermediate product cobalt carbonate is heated and the temperature is controlled to be 50-55°C, which requires more energy; And hydrogen is relatively expensive...

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Problems solved by technology

[0002] Although the invention patent "Production Method of Subcobalt Oxide" with publication number 101200309 can produce a kind of cobaltous oxide with high cobalt content, the chemical purity of the product is not good, and the product contains nickel, iron, calcium, copper, manganese, zinc, The content of magnesium and other elements is too high, which cannot meet the requirements of various indicators for high-performance and high-power power batteries for battery materials

In addition, one needs to heat the reaction tank that produces the intermediate product cobalt carbonate and control the temperature to 50-55°C, which requires a lot of energy consumption; the other is to continuously fill the reduction furnace that decomposes and produces cobaltous oxide-hydrogen, And hydrogen is relatively expensive, so this invention patent also has the disadvantage of high production cost

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