FLOTATION OF TITANIUM-BEARING ORES AND WATER-BEARING ORES FOR EXTRACTION OF MINERALS Russian patent published in 2012 - IPC B03D1/00 

FIELD: process engineering.

SUBSTANCE: invention relates to concentration of minerals by flotation and may be used in extraction of titanium dioxide, silicon dioxide and vanadium dioxide fron titanium-bearing and water-bearing ores. Proposed method comprises producing flotation concentrate using flotation reagent and extracting mineral therefrom. Liquid or dry alkaline metal lignosulphonate is used as flotation reagent to be added to concentrate in amount of 0.05-1.7 kg per ton of ore crushed to, at least, 0.2 mm. Prior to flotation, mix is stirred for, at least, 5 minutes while obtained flotation concentrate is analysed for availability and content of minerals by relationship: where M₁ is mineral weight in comparison solution, mg; M_t is weight of test portion, mg; V is total volume of analysed solution, V_al - volume of aliquote, cm³; F is graduation factor.

EFFECT: higher efficiency.

2 dwg, 6 tbl