Leaching of Gold and Silver from Crushed Au-Ag Wastes

  title={Leaching of Gold and Silver from Crushed Au-Ag Wastes},
  author={Jana Ficeriov{\'a} and Peter Bal{\'a} and Erika Dutkov{\'a} and Eberhard Gock},
Au-Ag noble metal wastes represent a wide range of waste types and forms with various ballast elements and components. The thiourea process of gold and silver extraction from ores, concentrates or secondary raw materials consists of gold and silver leaching into the thiourea solution and the consequent precipitation of these metals from the solution. Due to the non-toxic character of thiourea it is the perspective alternative to the up to now most frequently used cyanide method. The thiourea… CONTINUE READING