1 results about "Chromium product" patented technology

This application provides a method for selectively separating vanadium and chromium from chromium-vanadium slag leachate, relating to the field of solid waste recycling. The method includes: diluting a hydrophobic eutectic solvent with a diluent to obtain an extractant; mixing the extractant with the chromium-vanadium slag leachate, performing shake extraction, allowing the mixture to stand and separate phases to obtain a vanadium-loaded organic phase and a raffinate; washing and back-extracting the organic phase to obtain a vanadium-poor organic phase and a vanadium-rich back-extract; then subjecting the vanadium-rich back-extract to vanadium precipitation treatment and a first calcination to obtain vanadium pentoxide; the hydrophobic eutectic solvent is obtained by heating and stirring a mixture of a hydrogen bond donor and a hydrogen bond acceptor, wherein the hydrogen bond acceptor is composed of a neutral phosphorus-containing organic compound and a hydrophobic quaternary ammonium salt. This method can achieve selective separation of vanadium and chromium, effectively solving the problem of vanadium and chromium separation from chromium-vanadium slag leachate, and has good application prospects in the field of selective separation of vanadium and chromium to prepare high-purity vanadium and chromium products.