FELDSPAR PROCESSING METHOD

摘要

FIELD: minerals processing. ;SUBSTANCE: said invention relates to the minerals processing by flotation and magnetic separation. Method can be used processing nonmetallic mineral raw materials industry when preparing feldspar raw materials containing nepheline syenites. The means of processing feldspars, which contain nepheline syenites, includes crushing, grinding, deshaling of the feldspar raw materials. Flotation of the feldspar raw materials is conducted in alkaline environment, created by adding calcined soda at value of pH9,0-9,2 and when adding reagents in the following sequence: reagent – depressant – water glass at a flow rate of 120 g/t, reagent – potassium salt of 6-alkyl salicylic acid at a flow rate of 450 g/t, reagent – cationic collector – primary alkylamine acetate at a flow rate of 100 g/t. After flotation, a two-stage high-gradient wet magnetic separation of flotation tail is completed. The feldspar is concentrated in the flotation product. At the first stage the magnetic induction is equal to 1,0 T, and at the second stage it is as great as 1,4 T.;EFFECT: increased yield and extraction of feldspar into the final concentrate. ;1 cl, 2 tbl, 2 ex, 1 dwg