METHOD OF PRODUCTION OF CALCIUM CHLORIDE Russian patent published in 2006 - IPC C01F11/24 

FIELD: production of calcium chloride from aqueous solutions by dehydration.

SUBSTANCE: proposed method includes dehydration of calcium chloride solutions in fluidized-bed apparatus by spraying the solution in layer through injectors at control of granulometric composition of dehydrated product by degree of spraying, separation of target fraction of product and treatment of finely-dispersed classes of product by starting solution and return of them to apparatus. Target fraction of product is subjected to treatment by solution of calcium chloride at temperature of 30-46°C taken in the amount sufficient for obtaining the product at preset content of crystallohydrate water in presence of recycled particles. Proposed method makes it possible to obtain dehydrated granulated product at content of crystallohydrate water up to 20%.

EFFECT: enhanced efficiency.

2 cl, 1 tbl, 3 ex