HEV process for highly selective rhodium precipitation from chloride media

organic agent rhodium precipitation
highly selective against Pt Pd Ir Au, Cu Ni Pb;
no or low salination of liquors; dissolvable precipitate

useful separation scheme for	process data
1. rhodium precipitation from main stream pgm refinery liquors benefits replacing salt precipitations or cementations	pregnant liquor /feed 5 - 15 g/l Rh Cu, Pb, Se, (Fe) main constituents Pt, Pd, Ir minor constituents yield and recovery > 99% Rh recovery in precipitate > 99.9% Rh purity in precipitate base metals and minor constituents Pt, Pd, Ir left in filtrate
2. separation of Rh traces from PtPdIr pgm refinery liquors benefits replacing repeated salt precipitations	pregnant liquor /feed 0 - 2 g/l Rh base metals Cu, Pb, Se, (Fe) Pt, Pd, Ir main constituents yield up to > 99% Rh recovery in precipitate depending on feed
3. separation of Rh traces from Cu and Se rich Sherrit leach liquors benefits avoiding Rh losses in Cu-cathodes	pregnant liquor /feed 0 - 1 g/l Rh Cu, Ni main constituents Pb, Se, Fe, Pt, Pd, Ir minor constituents yield > 95% Rh recovery up to 99% in precipitate depending on feed

cut losses on external Rh refining !

no external cost; no assay fraud; save recovery time !

you don't need an external rhodium refiner for your scrap any longer !