Analysis on new approaches for utilization of phosphogypsum in China

Based on the analysis of the current situation of comprehensive utilization of phosphogypsum(PG) in recent years,sulfuric acid production from PG is considered as the approach for utilizing PG in a large scale.The Chinese patents about the sulfuric acid production from PG are reviewed.The new process of the production of sulfuric acid by reducing PG with sulfur is put forward.The technical advantages of the processes reduced by sulfur and coke are compared in detail.The results suggest that the former process has more promising application in the production of sulfuric acid for PG.