process for the separation of silver and palladium from waste ag pd ate

摘要

process for the separation of silver from waste pulp and paladiului ag - pd, by their displacement with hno3 and precipitation of silver in the form of the solution of the nitrates agcl, by treatment with hcl.followed by filtering the precipitate and the filtrate and washing treatment and water washing with a washing agent for reducing paladiului reducator to palladium metal is characterized bythat, before the dissolution of ag pd paste waste with hno3, the solvent content is removed by drying at temeperaturi 150 degree c, and of the solution obtained after digestion with hno3.what's keeping nedizolvata by filtration and washing with distilled water before treatment with hcl solution, and, finally,palladium content in the filtrate and wash waters results in filtering and washing precipitate of agcl being reduced to palladium metal.through their treatment under stirring at a temperature of 70 continue and 75 degree c, with a solution of sodium hypophosphite in excess of 10% of stoichiometrie.