公开(公告)号：EP0652979A4

公开(公告)日：1995-09-27

申请号：EP93918586

申请日：1993-07-28

申请人： GREAT LAKES CHEMICAL CORP

发明人： DADGAR AHMAD ,  HOWARTH JONATHAN N ,  SERGENT RODNEY H ,  FAVSTRITSKY NICOLAI A ,  MCKEOWN JULIE A ,  BORDEN DENNIS W ,  SANDERS BRENT M ,  LIKENS L JANE

IPC分类号： C22B3/10 ,  C22B11/00

CPC分类号： C22B11/04 ,  C22B3/10 ,  C22B3/24 ,  C22B3/42 ,  Y02P10/234

摘要： A process for leaching platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching platinum and palladium. A process for electrogenerating bromine and a process for leaching platinum and palladium wherein bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.

摘要翻译： 一种浸出铂和钯的方法，其中含有溴和溴离子的含水浸出溶液与贵金属源接触以产生含水浸出液。 用于生产用于浸出铂和钯的含水浸出溶液的前体组合物。 一种电解溴的方法和一种浸出铂和钯的方法，其中溴被电解并与贵金属源接触以产生含水浸出液。 一种浸出金，银，铂和钯的方法，其中溴从含有氯离子和溴离子的溶液中电解生成。

公开(公告)号：EP0666834A4

公开(公告)日：1996-06-05

申请号：EP94900488

申请日：1993-11-01

申请人： GREAT LAKES CHEMICAL CORP

发明人： HOWARTH JONATHAN N ,  MCKEOWN JULIE A ,  SERGENT RODNEY H

IPC分类号： C02F1/50 ,  A01N37/32 ,  A01N43/50 ,  A62D3/00 ,  C02F1/76 ,  C02F1/78

CPC分类号： C02F1/78 ,  C02F1/766

摘要： Methods and compositions for generating stable, residual disinfectants during the ozonization of water, comprising the carrying out the ozonization of water in the presence of bromide ions and an effective amount of a hypobromite ion scavenger possessing imide and/or amide functionality that preferentially converts hypobromite ions to biocidal, ozone-stable derivatives thereof to thereby suppress the catalytic decomposition reaction of ozone with hypobromite ions. The methods and compositions of the present invention are useful for water disinfection and algae control, generally.