| abstract |
PROBLEM TO BE SOLVED: To separate and recover manganese dioxide and carbon, which are main constituent materials of a waste dry battery, from constituent materials of other batteries by a simple operation, especially in a form useful as a metallurgical raw material such as a raw material for producing ferromanganese and Provide chemical materials that can be used as a carbon source. SOLUTION: A method for separating and recovering a powdery mixture containing manganese dioxide and carbon from a waste dry battery, and (1) a sorting step for sorting a manganese battery and an alkaline manganese battery from a discarded dry battery. (2) Crushing and sieving step for obtaining powder particles by sieving after crushing the selected battery (3) Manganese dioxide having an acid treatment step for dissolving the obtained particles with dilute hydrochloric acid or dilute sulfuric acid, and Recovery method for carbon-containing mixture. [Selection] Figure 2 |