PROCEDURE FOR PROCESSING VANADIUM CONTAINING RAW MATERIAL Russian patent published in 2011 - IPC C22B34/22 C22B3/08 C22B3/24 

FIELD: metallurgy.

SUBSTANCE: procedure consists in preparation of water pulp from raw material, in introduction of sulphuric acid and anionite into it for leaching and in extraction of vanadium from pulp by sorption. Upon sorption saturated anionite is withdrawn and washed; vanadium is de-sorbed from anionite and regenerated anionite is introduced to the stage of leaching and sorption. Also, water vanadium pulp is prepared from vanadium containing raw material. As such there is used oxidised slag or slime at pH 11.5-7.5. Sulphuric acid is introduced into prepared water pulp at S:L=1:2 to pH 4.5-4.0. Vanadium is extracted from pulp by counter-flow sorption at pH 4.5-1.8 with following saturated ionite washing at drainage. Value of pH in pulp is maintained at 4.5-4.0 at withdrawal of saturated anionite, while at introduction of regenerated anionite - 2.0-1.8.

EFFECT: raised extraction of vanadium, elimination of upset of sparingly soluble forms of vanadium at moment of leaching, facilitation of completeness of sorbent saturation and minimal concentration of impurities on it, reduced consumption of sulphuric acid, reduced number of operations in process flow sheet.

2 cl, 4 tbl, 2 ex