Abstract
• Two vacuum distillation methods for treating jamesonite were developed and compared. • The decomposition behavior of jamesonite under argon and 10 Pa was studied. • The volatile behavior of antimony trisulfide and lead sulfide was clarified. • Sulfides of lead and antimony with purity higher than 98% were obtained directly. • The feasibility of vacuum separating sulfides of lead and antimony was proved. Jamesonite is a significant complex mineral containing antimony, lead, iron and other elements. At present, the traditional smelting method has high sulfur dioxide pollution and low metal recovery. This paper puts forward a method of treating jamesonite by vacuum distillation. The decomposition behavior of jamesonite (Pb 4 FeSb 6 S 14 ) in argon and 10 Pa, the volatilization of pure sulfides and the vacuum distillation behavior of jamesonite under 10 Pa were also studied. The separation of lead and antimony via two methods, namely multi-step condensation and one-step multi-stage condensation was developed. The results show that the initial decomposition temperature of jamesonite is higher than 600 °C in argon and about 500 °C at 10 Pa. The final decomposition products are antimony trisulfide, lead sulfide and ferrous sulfide. The decomposition temperature can be effectively reduced under negative pressure. Pure antimony sulfide volatilizes violently at 630 °C-760 °C, and pure lead sulfide sublimates violently at 887–1098 °C, respectively. The purity of antimony sulfide and lead sulfide obtained by multi-step condensation experiment is 99.12% and 98.74%, respectively. The purity of antimony sulfide and lead sulfide obtained by one-step multi-stage condensation is 98.12% and 89.26%, respectively. Zinc sulfide is also enriched by a multi-stage condensation, with a purity of 99.40%. This method can achieve the separation of Sb 2 S 3 and PbS directly from jamesonite, significantly reduce the production cost compared to the traditional process.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
