Phosphogypsum is a byproduct generated during the production of phosphoric acid from phosphate rock. The process typically involves the use of sulfuric acid to dissolve the phosphate rock, resulting in phosphoric acid and phosphogypsum as a waste material. The chemical composition of phosphogypsum primarily includes gypsum (calcium sulfate dihydrate), but it often contains varying amounts of impurities such as trace metals, fluoride, and radium, which can make it a concern for environmental and health safety.
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