| 摘要 |
PURPOSE: A process to recover metals such as Au, Ag, Sb or the like from waste generated in the process for producing Sb2O3 is provided, which has an effect on recovering Au, Ag in high purity and preventing environmental pollution. CONSTITUTION: This method comprises the steps of: recovering Sb by pouring an absorbent of 50% by weight of cement and 30% by weight of powdered bones into a cylindrical furnace, inserting waste and heating at 800 to 850deg.C for 5 to 6 hr; pouring a mixture of the residual liquid and Pb in a ratio of 1:2, blowing hot blast at 650 to 700deg.C and separating an Au+Ag alloy body from impurities; recovering Au as a precipitate by heating the ground Au+Ag alloy body in an HNO3 aqueous solution; and recovering Ag by adding AgNO3 to HCl and adding Zn to the AgCl.
|
