Palladium Production
Palladium Production
The first step in the technology of precious metals dissolving in aqua regia is Gold and Platinum precipitation, then Pd(NH3)2Cl2 is extracted from the solution, refined by recrystallization, from HCl ammonia solution, dried and roasted in reducing atmosphere. Palladium powder is then remelted. Palladium microcrystal is produced by reducing Palladium salts solutions. Electrodepositing is processed from nitrite and phosphate electrolytes, using, particularly, Na2[Pd(NO2)4].
Only 10% of the world Palladium had been extracted from secondary raw materials 2/3 of which had been produced in USSR.