PROCESS FOR REDUCING THE SODIUM CHLORIDE CONTENT OF A POTASSIUM SULFATE

摘要

AbstractA process for reducing the sodium chloridecontent of crystalline potassium salts without theuse of sucessive recrystallization. The crystallinepotassium salts having a sodium chloride contentgreater than about 0.8 percent by weight are sub-jected to compacting and crushing to provide acrystalline product having an average particle diameterless than 1.6 millimeters. The crystalline product isleached with a brine at least about 80 percent saturatedwith said potassium salt and less than 50 percent sat-urated with sodium chloride to produce a crystallinepotassium salt product containing less than about 0.35percent by weight of sodium chloride.