METHOD OF POTASSIUM CHLORIDE EXTRACTION FROM CLAY-SALT SLIME Russian patent published in 1995 - IPC

FIELD: technology of inorganic chemistry. SUBSTANCE: potassium chloride is extracted from clay-salt slime at halurgic processing of potassium ore by continuous treatment of condensed slime with washing liquid by repulpation and condensing which were carried out together in flotation machines at 45-50 C at solid phase concentration in the parent suspension 16-18 wt.-%. Potassium chloride concentration in washing liquid is maintained at the level less than by 12% lower as compared with that in the liquid phase of parent clay-salt slime. Slime-store and washing liquid were recovered to the head process. EFFECT: improved method of potassium chloride extraction. 2 cl, 4 dwg