Method for recovering silver-platinum from platinum containing silver iodide slag


Application Number: 00122340
Application Date: 2000.08.25
Publication Number: 1339611
Publication Date: 2002.03.13
Priority Information:
International: C22B11/00
Applicant(s) Name: Guiyan Platinum Industry Co., Ltd.
Address:
Inventor(s) Name: He Xiaotang;Wu Xilong;Bai Jun
Patent Agency Code: 53100
Patent Agent: liu juanyi
Abstract The silver and platinum recovering process from waste liquid containing silver iodide from platinum type anticancer medicine production includes: reducing of hydrazine hydrate, dissolution with concentrated sulfuric acid to separate silver and platinum, and refining silver and platinum through traditional process. The process of the present invention is easy and complete in separating silver and platinum, and has silver and platinum recovering rate as high as 98.5% and 99% separately. The method of the present invention may be used in treating various waste material containing silver and platinum.