METHOD OF PRODUCING POTASSIUM CHLORIDE WITH IMPROVED RHEOLOGICAL PROPERTIES Russian patent published in 2011 - IPC C01D3/22 B01J2/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in producing halurgic potassium chloride from sylvinite ore using a dissolution-crystallisation method. The method of producing potassium chloride involves structural agglomeration of a mixture of a wet crystallisate and dry hot potassium chloride in a mixer-granulator and then drying the mixture. For structural agglomeration of the mixture, dry hot potassium chloride is fed in amount of 25-100% of the weight of wet crystallisate. The mixture is dried at temperature 105-135°C to obtain the end product.

EFFECT: invention reduces caking capacity of potassium chloride, avoids use of structure-forming salts, reduces consumption of reagents used to prevent potassium chloride from caking, and obtain a product which does not contain extraneous impurities.

2 cl, 2 tbl, 2 ex