Recovery of tin from tin-coated copper-clad steel wire scrap using surface sulfuration-vacuum volatilization

Ultrasound-assisted extraction of Sn from tinplate scraps by alkaline leaching: Novel acoustoelectric synergy effect underlying intensifying mechanism

“…Moreover, vacuum is favorable to high-temperature volatilization and can accelerate volatilization kinetics. Due to the vapor pressure difference of Pb, Sb, and Sn, vacuum distillation was applied to extract tin from Sn-Pb-Sb alloy via the orthogonal experiments under a limited vacuum degree of 5 Pa, and under conditions of distillation temperature of 1200 ℃ and time of 25 min, 99.82% of tin could be recovered [6] . It’s therefore suggested that tin recovery by thermal treatment from tin-bearing scraps has the advantage of high tin recovery efficiency, but it is characterized as high energy consumption and huge equipment investment.…”