METHOD FOR PREPARING BRINE MUD WITH REDUCED QUANTITY

摘要

PROBLEM TO BE SOLVED: To sharply reduce residual quantity of brine mud after acid dissolution in an acid dissolution treatment of the brine mud produced by sodium chloride electrolysis. SOLUTION: A method for preparing brine mud with reduced quantity comprises first process to fourth processes in the sodium chloride electrolysis. A 1st process: a process of producing brine and brine mud slurry obtained by sedimentation from raw salt. A 2nd process: a process of condensing the brine mud slurry and separating brine mud thickened slurry from the brine. A 3rd process: a process of dissolving the brine mud thickened slurry with an acid. A 4th process: a process of separating a residue-containing aqueous solution produced in the 3rd process by filtration. COPYRIGHT: (C)2006,JPO&NCIPI