METHOD OF SEPARATING MIXTURE OF SOLID SUBSTANCES Russian patent published in 1997 - IPC

FIELD: mineral dressing. SUBSTANCE: separation of silica or silicon mineral admixtures from one or several desired minerals in aqueous suspension with the aid of mechanical means is improved if a small amount of alkanolamine is added to suspension. Examples of separation arrangements allowing efficient use of advantages of the method are concentration tables, deslimators, and hydroseparators. Alkanolamine is characterized by general formula NR¹R²R³ where R¹ and R² is hydrogen or hydroxy-C₁-C₆-alkyl and R³ is hydroxy-C₁-C₆-alkyl. In particular, alkanolamine may be diethanolamine, monoethanolamine, or their mixture. EFFECT: enhanced efficiency of process. 5 cl, 7 tbl