Low temperature process for preparing tricobalt tetraoxide

摘要

The process of the present invention includes introducing a reaction mixture formed by mixing a precipitation agent with an aqueous solution of cobalt sulfate, cobalt chloride or cobalt nitrate into an autoclave or reactor equipped with a refluxing device directly without filtration, and conducting an oxidation reaction at a temperature of 50-100° C. and in the presence of an oxidant to form a tricobalt tetraoxide powder.