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522814 
Journal Article 
Leaching of the antimony and accompanying of elements Sb2S3 in the alkaline medium 
Smincakova, E; Remeteiova, D 
2007 
12 
2 
146-149 
Slovak 
This paper presents results of the laboratory investigation of alkaline leaching of stibnite that is an important mineral occuring in the antimony-bearing raw materials. The following components were present in stibnite: Sb2S3, SiO2, ZnS, FeS2. The aim of this study was to establish the effect of composition of the aqueous alkaline leaching medium (1% NaOH, 1% NaOH + 1% Na2S2O3, 1% NaOH + 1% Na2S) on the recoveries of Sb, Fe, Pb, Zn, Cu, Ni and Hg. The antimony recoveries in the leaching solutions NaOH and NaOH + Na2S2O3 solutions were lower in comparison with the leaching in NaOH + Na2S. The Fe, Pb, Zn recoveries in alkaline solutions were found to decrease in the following order: Fe, Pb, Zn. The mercury recovery in the leaching test with the solution containing 1% NaOH+1% Na2S was 3.7%. 
stibnite; alkaline leaching solutions; antimony; stibnite