NEPHELINE ORE FLOTATION PROCESS Russian patent published in 2002 - IPC

FIELD: mineral dressing. SUBSTANCE: invention can be used when processing complex-composition ores to produce concentrates of associated nepheline component. Process involves agitating with modifiers and fatty acid collector, and separation of pulp into froth and chamber products. After agitating with modifiers, pulp is completed by product of the oxidative modification of a vegetable material composed of, wt %: carboxyl group-modified starch 50-80, partly hydrolyzed protein 7-30, hydrolyzed fats 0.9-12, sugars 1-8, cellulose 1.5-12, and mineral materials - the balance. Nepheline is transferred into chamber products. Process is carried out and strongly alkaline medium (pH 11.2-11.35). Yield of product is mo less than 2 g/t. Pulp is prepared from apatite flotation tails. EFFECT: enhanced efficiency of nepheline flotation under recycling water supply conditions. 4 cl