Purification technology for industrial sodium chloride

• Main Authors: CHEN SHIXIANG, ZHANG ZHENHUA, WEI BINGJU, WU ZHENG, WANG SHIZHONG
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2012
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a purification technology for industrial sodium chloride in the process of producing monohydrate magnesium sulfate and industrial sodium chloride with high temperature salts as raw materials, belonging to the field of purification of industrial sodium chloride with bittern. The purification technology comprises the following steps: separating a high temperature salt slurry with a first centrifuge to obtain a coarsely separated salt and a coarse monohydrate magnesium sulfate slurry; modulating a slurry of bittern and the coarsely separated salt in a surge tank, allowing an obtained coarsely separated salt slurry to enter into an elutriator, and elutriating the coarsely separated salt slurry with bittern; allowing a salt slurry discharged by the elutriator to enter into a salt slurry tank and pass through a second centrifuge so as to obtain industrial sodium chloride, and allowing centrifuged liquid to enter into the elutriator again, wherein, overflowing liquid in the elutriator enters