Precious metals refiners typically use one of two methods to recover and refine platinum group metals pgms from spent catalysts pgms include platinum pt palladium pd ruthenium ru and rhodium rh rhenium re which is not considered a pgm is also present in many spent catalysts and is a valuable precious metal too these refining methods are pyrometallurgical and hydrometallurgical technologies there is a clear distinction between these technologies that affects the outcome . Recovery and refining of precious metals from hydrocarbon petroleum chemical and petrochemical processes sabin recovers pgms and other precious metals from spent catalysts with soluble and insoluble alumina silica alumina and zeolite o pgms platinum palladium ruthenium and rhodium rhenium gold silver and other precious metals. Precious metals refiners recovery refining reclamation contract that is five cents lower per kilo than the next lowest quote the myth here lies in the fact that many refiners are middle men who simply broker materials out to third party vendors in the precious metals refining industry there are essen tially three categories of refining. Precious metal refinery located in north america e waste precious metal refining system is designed to refine and recover precious metals like gold silver palladium pd and platinum pt from electronic waste e waste like circuit boards including cpu ram pins and other computer components e waste is classified as hazardous material therefore