CHEN Bing, GU Huimin, SUN Yi, et al. Extraction of ZnO from zinc oxide ore by alkali roasting method[J]. CIESC Journal, 2012, (2): 658-661.DOI: 10.3969/j.issn.0438-1157.2012.02.046.
zinc oxide ore was treated by roasting method. ZnO
SiO2 and PbO reacted with alkali first and then went into solution after digestion process. In this paper
orthogonal experiment method was used to optimize technological conditions for extraction of ZnO from zinc oxide ore when roasted with alkali. The optimized conditions are mass ratio of ore and alkali 1:6
holding temperature 400℃
holding time 4h. Under these conditions
the extraction rate of ZnO is 82.4%. The essential components of zinc extracted slag are stishovite