发明名称 |
Reactive resins useful for precious metal recovery |
摘要 |
An improved process for the recovery of precious metal values is disclosed. By this process precious metals in the form of anionic complexes are contacted with a weak-base anion exchange resin capable of complexing with the anionic complex. Such weak-base anion exchange resins contain weak-base functionalities derived from linear or cyclic polyaminoalkylene amines which have more than 1 amine moiety and at least 3 carbon atoms in a 1,X-alkylene moiety or moieties separating at least 1 amine moiety from a second amine moiety (i.e., X is an integer greater than 2).
|
申请公布号 |
US4758413(A) |
申请公布日期 |
1988.07.19 |
申请号 |
US19860931322 |
申请日期 |
1986.11.17 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
HARRIS, WILLIAM I.;STAHLBUSH, JAMES R. |
分类号 |
B01J41/04;B01J45/00;C01C3/11;C01G7/00;C22B3/42;C22B11/00;(IPC1-7):C01G7/00 |
主分类号 |
B01J41/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|