A use of chromium vanadium rich slag slag preparation method

The present invention belongs to the field of hydrometallurgy, in particular, the present invention relates to a use of chromium vanadium rich slag slag preparation method. The use of chromium vanadium rich slag slag preparation method of the present invention includes the steps of: 1) the vanadium and chromium slag mixed solution of hydrochloric acid at 90 ~ 160 ℃ leaching to obtain an intermediate slurry; wherein said hydrochloric acid solution and liquid-solid quality chrome vanadium slag ratio of 3: 1 to 10: 1; 2) in the step 1) to give the intermediate slurry was subjected to solid-liquid separation to obtain a leach residue containing vanadium, chromium leaching solution; 3) step 2) leach residue was washed, dehydrated and silicon at 100 ~ 200 ℃ dried to obtain a rich slag. The present invention uses hydrochloric acid leaching of vanadium and chromium slag, slag can not only greatly improve the taste, but also to achieve titanium and vanadium, chromium separation efficiency, greatly improved titanium, vanadium and chromium recovery. The reaction of the present invention under mild conditions, and significantly improved resource utilization.