Procedure for the separation and recovery of non-ferric metals of previous and intermediate minerals and steel products. (Machine-translation by Google Translate, not legally binding)

摘要

Process for the separation and recovery of non-ferrous metals for example Cu, Zn, Pb, Ag, Au as well as As, Sb and Sn from calcined pyrites, intermediate steel products, oxidic minerals and the like, by means of chlorination volatization with the aid of CaCl 2 and/or MgCl 2, so that the material, which is mixed in reduced excess with the amount necessary for the reaction of CaCl 2 and/or Mg/Cl 2, is heated at temperatures above 700º C, preferably 900-1100º C, characterized in that the material there passes two reaction zones, one neutral until slightly oxidizing, the other slightly reducing, the sequence of the reaction zones being arbitrary. (Machine-translation by Google Translate, not legally binding)