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采用正交设计法对过磷酸钙水浸取过程中添加剂种类和浸取条件进行了筛选研究，得到硅的浸出率随过程条件变化的情况及其与氟浸出的关系，为过磷酸钙水浸过程脱氟控制提供了依据。
Orthogonal design method was used to study the types and leaching conditions of additives during the leaching of superphosphate water. The relationship between the leaching rate of silicon and the fluorine leaching was obtained. Process defluorination control provided the basis.