method for increasing the yield of the production of phosphoric acid by the defluoration and the improvement of monphologiques characteristics of phosphogypsum in the presence of a siliceous chert land.

摘要

a siliceous earth (chert) is added, the proportion of phosphate determined wet before the reaction with h2so4 in the chain of production of phosphoric acid. then there is the improvement of defluoridation and morphological characteristics of phosphogypsum are crystal and filtered, thereby increasing the overall performance of the reaction.