发明名称 |
Extraction of precious metals from ores and other precious metal containing materials using halogen salts |
摘要 |
Platinum group metals, gold and silver are extracted from complex ores, automobile scrap, refractory ores and as naturally occurring by leaching the precious metal containing materials with a solution containing halogen salts such as potassium or sodium iodide and bromide in the presence of ammonium ions and oxygen. The precious metal containing materials and reactants are charged into a reaction zone held at high temperatures and pressures to form a slurry containing a precious metal ion solution. The precious metal ion solution is separated from the slurry and subjected to recovering techniques to recover the precious metals.
|
申请公布号 |
US5328669(A) |
申请公布日期 |
1994.07.12 |
申请号 |
US19930009177 |
申请日期 |
1993.01.26 |
申请人 |
SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY |
发明人 |
HAN, KENNETH N.;MENG, XINGHUI |
分类号 |
C01G5/00;C01G7/00;C22B3/14;C22B7/00;(IPC1-7):C01G3/14 |
主分类号 |
C01G5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|