METHOD FOR EXTRACTING VANADIUM BY LEACHING VANADIUM-CONTAINING RAW MATERIAL FIRED CLINKERS WITH AMMONIUM BICARBONATE SOLUTION

摘要

A method for extracting vanadium by leaching vanadium-containing raw material fired clinkers with an ammonium bicarbonate solution, the method comprising: leaching vanadium-containing raw material fired clinkers with an ammonium bicarbonate solution to enable vanadium to enter the solution in the form of ammonium vanadate to obtain leached residue and a vanadium-containing solution; and a vanadium pentoxide product is obtained from the vanadium-containing solution via cooling, crystallization and separation of the ammonium vanadate and calcination of the ammonium vanadate. The method employs an ammonium bicarbonate solution leaching technology without sodium salts, has a simple process, is easy to operate, and has a vanadium extraction rate of 85-99% without producing saline waste water.