Maenner & Associates, LLC
Treatment method for resource recycling of hexavalent chromium-containing residues
A treatment method for resource recycling of hexavalent chromium-containing residues is provided. This method comprises steps as follows: 1) adding water to the hexavalent chromium-containing residues and mixing uniformly; 2) adding mineralizers to a solution obtained in step 1) and stirring sufficiently to obtain a mixed liquid; and the mineralizers are sodium chlorate, sodium perchlorate and hydrochloric acid; 3) treating the mixed liquid by a hydrothermal method or direct heating; 4) after the heating treatment, naturally cooling a solid-liquid mixture to room temperature for holding; 5) separating solid residues and a chromium-containing supernatant, and washing filtered residues with water and then drying; and 6) recycling a chromium-containing solution for returning to a work section, or for a treatment of recycling chromium.
South China University of Technology
C C Y A C B B C
C22B C01G Y02P A62D C22B B09B B09B C22B
inventional inventional additional inventional inventional inventional inventional inventional
Weizhen Zhang Wencong Xueming
Liu Lin Rong Liu