The significance of using high-Mg phosphorite, some countermeasures for keeping single superphosphate operation well with those phosphate rocks and its achievements are presented.

• 阐述应用高镁磷矿生产过磷酸钙的意义，利用高镁磷矿维持过磷酸钙生产及产品质量的工艺措施和取得的效果。