Method for producing cobaltous oxide

Abstract

The invention relates to a production method of CoO, firstly the CoCl solution and the carbon-ammonic precipitator are reacted in the reaction tank to generate CoCO3 slurry that is drained to the cobalt deposition tank, and then the slurry in the cobalt deposition tank is filtered, cleaned, dried and smashed to obtain the CoCO3, and then sintered in controlled atmosphere for production: the reduction furnace has seven computer temperature control zeros, before feeding, first protection gas is used to drive air in the furnace away, and then hydrogen is charged continuously, the material boat filled with CoCO3 passes through the seven computer temperature control zeros at a speed of 15minutes per time, so that the CoCO3 is decomposed to generate CoO in micro reduction atmosphere. As the CoCO3 produced in previous stage has good chemical indice and physical performance, plus computer multi-point low temperature control is adopted in the process of controlling atmosphere sintering, the CoOproduced in the invention has high content, high quality, and can be used as powder materials of high performance and large-power batteries, thereby making great contributions for prompting the development of novel energy industries.

Description

technical field [0001] The invention relates to a method for producing powder materials used in the battery industry, in particular to a method for producing cobaltous oxide powder with high cobalt content. Background technique [0002] At present, the battery-grade common cobaltous oxide products produced by domestic manufacturers are produced by calcination and decomposition technology. Using traditional reduction furnace equipment, that is, using digital display temperature control, so the temperature of each zone in the furnace varies greatly, and the product produced has poor consistency and large color difference. It is difficult for products to meet the requirements of high-performance and high-power batteries in terms of physical indicators, chemical composition and electrochemical performance. [0003] At present, the battery industry and scientists around the world are conducting extensive and in-depth industrial development research on how to improve the specific...

AI Technical Summary

Problems solved by technology

Using traditional reduction furnace equipment, that is, digital display temperature control, so the temperature of each zone in the furnace varies greatly, the product consistency is poor, and the color difference is large

It is difficult for the product to meet the requirements of high-performance and high-power batteries in terms of physical indicators, chemical composition and electrochemical performance

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