Optimisation of Pure Stibnite Leaching Conditions by Response Surface Methodology

In the present work chemical basic leaching of pure Stibnite (Sb2S3) by Na2S and NaOH under different experimental conditions at 40°C, has been studied in order to optimise the reagent concentrations for the antimony dissolution process. Response Surface Methodology has been used to find the best experimental concentrations to maximise the Sb extraction yield. 98-100% of antimony recovery was obtained by using 1g NasS and 1g NaOH per gram of pure stibnite. © 2001 SDU. All rights reserved.