METHOD FOR DESILICIFICATION OF QUARTZ-LEUCOXENE CONCENTRATE OBTAINED FROM PETROTITANIUM ORES Russian patent published in 2023 - IPC C22B34/12 C01G23/47 

FIELD: desilinization of quartz-leucoxene concentrate obtained from petrotitanium ores.

SUBSTANCE: methods for desilinization of quartz-leucoxene concentrate obtained from petrotitanium ores of the Yarega deposit. Desilinization method includes roasting the concentrate with additives to obtain cinder, cooling, crushing and desliming it to obtain sludge and sand. The resulting sands are enriched to obtain a rutile concentrate. At the same time, clay-salt sludge with a content of sodium or potassium chlorides of 15-30% by weight is used as an additive for roasting and it is carried out at a temperature of 850-950°C. The resulting cinder is crushed to 0.5 mm, while the sands after desliming are crushed to 0.045 mm.

EFFECT: most complete extraction of pure rutile, free from intergrowths of quartz and impurities from the quartz-leucoxene concentrate.

1 cl, 6 tbl, 5 dwg, 5 ex