METHOD FOR EXTRACTING SALTS FROM SALT DEPOSITS Russian patent published in 2004 - IPC

FIELD: mineral salts extraction technology. SUBSTANCE: method includes well boring, well casing, well equipping with operation pipes, delivery of dissolvent and non-dissolvent into deposit, drainage of salt water. After delivery of non-dissolvent, gel-forming reagent is fed into dissolvent before delivery into deposit, in amount of 10-50% of non-dissolvent mass in the chamber. Density of gel-forming reagent is less than density of dissolvent. As gel-forming reagent expanded polystyrene is used. EFFECT: increased salt extraction, lowered non-dissolvent losses. 2 cl, 1 dwg, 1 tbl