PREPARATION METHOD OF HIGH PURITY ANHYDROUS MAGNESIUM CHLORIDE FROM AMMONIUM MAGNESIUM CHLORIDE HYDRATE
摘要
PURPOSE: A method for preparing high purity anhydrous magnesium chloride is provided to prepare high purity anhydrous magnesium chloride with uniform quality from ammonium magnesium chloride hydrate through an optimal heat treatment. CONSTITUTION: A method for preparing high purity anhydrous magnesium chloride comprises the steps of: mixing ammonium chloride into a magnesium chloride aqueous solution in which magnesite is dissolved in hydrochloric acid aqueous solution, concentrating and crystallizing the mixture to prepare ammonium magnesium chloride hydrate; heating the ammonium magnesium chloride hydrate in a decompression or vacuum condition; and heating the mixture at the temperature higher than a first heating process.
申请公布号
KR20110010251(A)
申请公布日期
2011.02.01
申请号
KR20090067706
申请日期
2009.07.24
申请人
KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES(KIGAM)
发明人
YOON, HO SUNG;KIM, CHUL JOO;PARK, HYUNG KYU;EOM, HYOUNG CHOON