磷石膏制硫酸的研究进展

Research progress in production of sulfuric acid from phosphogypsum

详细比较了分别采用焦炭和硫磺还原分解磷石膏的反应机理,并进一步分析现有焦炭还原磷石膏制硫酸在工程实施方面存在的问题,指出硫磺还原磷石膏制酸为节能减排的新工艺。最后针对磷石膏制酸的研究和工程实施,提出相应的建议措施。

The reactive mechanisms of phosphogypsum （PG） decomposition with coal and sulfur respectively are compared in detail. The problems existing in the engineering implementation for producing sulfuric acid from PG by reducer coke is analyzed, and the process for sulfuric acid production from PG decomposition with sulfur as the reductive agent would be possible to become a new kind of process with energy-saving and emission reduction. Finally, some relevant suggestion on the research and engineering implementation for producing sulfuric acid from PG is put forward.