METHOD OF PRODUCTION OF THE GRANULATED CALCIUM CHLORIDE AT THE COMPLEX PROCESSING OF THE NATURAL RETURN BRINES Russian patent published in 2006 - IPC C01F11/24 C01F11/20 

FIELD: petrochemical industry; methods of processing of the hydromineral raw materials with production of the granulated calcium chloride, lithium, bromine chloride (carbonate, hydroxide)and magnesium oxide.

SUBSTANCE: the invention is pertaining to the field of petrochemical industry, in particular, to the method of processing of the hydromineral raw materials with production of the granulated calcium chloride, lithium, bromine chloride (carbonate, hydroxide)and magnesium oxide. The method of production of granulated calcium chloride at the complex processing of the natural return brines includes settling of CaCl₂·6Н₂О with an admixture of magnesium chloride from the supersaturated return brines of calcium chloride type, granulation of the settling and production of magnesium oxide. The settling containing 90-93 % of CaCl₂·6Н₂О is separated, the mother brine enriched with lithium and bromine in 1.3-1.4 times, is used for consecutive production of the lithium concentrate in the form of the water solution of lithium chloride with the molar ratio of LiCl:CaCl₂ equal to 12-17, and also bromines and magnesium oxide. The technical result of the invention is involvement in the industrial cycle of the new type of the raw material - the natural return brines of the calcium chloride type, that is the first time offered for production of calcium chloride.

EFFECT: the invention offers involvement in the industrial cycle of the new type of the raw material - the natural return brines of the calcium chloride type for production of calcium chloride.

6 cl, 6 ex, 2 tbl, 2 dwg