METHOD OF PREPARING ALKALI METAL, CALCIUM AND AMMONIUM BROMIDES Russian patent published in 1999 - IPC

FIELD: chemical technology for preparing inorganic salts of bromine, more particularly ammonium, lithium, sodium, potassium and calcium. SUBSTANCE: process comprises preparing bromides by counterflow extraction of bromide from iron (3+) bromide solutions with amine salt solutions in organic solvent, and reextraction is carried out with solutions of corresponding metals in counter flow mode. In addition to bromides, iron (3+) chloride solution is prepared. Method makes it possible to use accessible, cheap and operationally safe iron (3+) bromide and chlorides of corresponding metals and ammonium. EFFECT: more efficient preparation method. 1 dwg, 3 ex, 3 tbl