Enhanced Separation of Sulfur and Metals from Polymetallic Sulfur Slag through Recrystallizing Regulation of Sulfur Crystals

Elemental sulfur is an important non-metallic material that widely used in various fields including chemical, metallurgical and sulfuric acid industries. Polymetallic slag (PSS) secondary resource for the recovery of sulfur. However, separation from PSS difficult due to tight binding some thiophilic metals Herein, we proposed a recrystallization method effective by using organic solvents control particle size crystals. It was suggested recovered close saturation state toluene about 2000 μm, while purity as high 99.6%. Moreover, rate over 95%, which more than current commonly flotation method. The growth mechanism crystals under different conditions lays foundation deepening theory large-size This realized metal sulfides such FeS2 ZnS, provided guidance resources through novel recrystallizing regulation.