Przemysl Chemiczny, Vol.90, No.5, 809-812, 2011
Production of roasted zinc concentrates by thermal treatment in fluidized bed. Part 1. Modification of magnesium removal and flotation of sphalerite concentrate
Roasted sphalerite concentrate was pulped in H(2)O, inoculated with CaSO(4) crystals, treated with H(2)SO(4) to remove Mg and Ca ions as resp. sulphates and enriched in Zn by flotation after activated with CuSO(4). The Zn content was increased from 54.3-56.4% in the raw material up to 59.0-59.2% in the final concentrates.