naa a22 4500 510772315 CHVBK 20180411083218.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s11837-013-0739-4 doi (NATIONALLICENCE)springer-10.1007/s11837-013-0739-4 Vacuum Carbothermal Reduction for Treating Tin Anode Slime [Elektronische Daten] [Wei Li, Weizhong Guo, Keqiang Qiu] In this work, a process of vacuum carbothermal reduction was proposed for treating tin anode slime containing antimony and lead. During vacuum carbothermal reduction, the antimony and lead were selectively removed simultaneously by reducing and decomposing the less volatile mixed oxide of lead and antimony into the more volatile Sb2O3 and PbO. Then the tin was enriched in the distilland and primarily present as SnO2. Crude tin was obtained via vacuum reduction of the residual SnO2. The results showed that 92.85% by weight of antimony and 99.58% by weight of lead could be removed at 850°C for 60min with 4wt.% of reductant and air flow rate at 400mL/min corresponding to the residual gas pressure of 40Pa-150Pa. Under these conditions, an evaporation ratio of 52.7% was achieved. Crude tin with a tin content of 94.22wt.% was obtained at temperature of 900°C, reduction time of 60min, reductant dosage of 12.5wt.%, and a residual gas pressure of 40Pa-400Pa. Correspondingly, the direct recovery of tin was 94.35%. TMS, 2013 Li Wei College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut Guo Weizhong College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut Qiu Keqiang College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut JOM Springer US; http://www.springer-ny.com 65/11(2013-11-01), 1608-1614 1047-4838 65:11<1608 2013 65 11837 https://doi.org/10.1007/s11837-013-0739-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0739-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Wei College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut NATIONALLICENCE 700 1- Guo Weizhong College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut NATIONALLICENCE 700 1- Qiu Keqiang College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, Hunan, China aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/11(2013-11-01), 1608-1614 1047-4838 65:11<1608 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer