METHOD FOR PREPARING LITHIUM BROMIDE FROM MOTHER LIQUOR Russian patent published in 2003 - IPC

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention relates to technology for preparing lithium bromide used for preparing working solution for refrigerator machines. Bromide ions in mother liquor are oxidized with chlorine, prepared bromine is distilled off with steam, steam-bromine mixture is condensed and bromine is blown off with air at temperature 70 C, not above. Prepared bromine-air mixture is purified from chlorine with lithium bromide solution and bromine from the purified mixture is trapped with lithium hydroxide solution or lithium carbonate pulp. Chlorination of mother liquor can be carried out without preliminary acidification. EFFECT: improved preparing method. 3 cl, 1 ex