METHOD FOR RECOVERING POTASSIUM IN COMBUSTION EXHAUST GAS DUST

摘要

PROBLEM TO BE SOLVED: To provide a technology for recovering potassium efficiently from combustion exhaust gas dust, and making effective use of this.SOLUTION: The potassium recovering method of combustion exhaust gas dust includes the processes (a) to (c). (a) A process of washing and treating combustion exhaust gas dust. (b) A process of adding sulfuric acid source to the washing water obtained. (c) A process of recovering the yielded sedimentation after solid-liquid separation.