報告
田中貴金属工業(株)における貴金属回収
2007 年 123 巻 12 号 p. 737-740
詳細
2007 年 123 巻 12 号 p. 737-740
Tanaka Kikinzoku Kogyo K. K. is refining and recovering the precious metals (Au, Ag, and six platinum group metal elements) and manufacturing their products. In this report, typical recycling processes for the precious metals from used electronic device, plating and deposition jigs, and the scrap containing platinum group metals such as automobile catalysts are described. These processes consist of the accurate evaluation, acid or cyanate dissolution, separation by precipitation, cementation, solvent extraction, or ion exchange, and recovery by electrowinning or chemical reduction.
