Phosphoric Acid Plant:
Phosphoric Acid Production Method: "Wet-process phosphoric acid"
"Wet-process phosphoric acid" refers to wet-process phosphoric acid with sulfuric acid method.

This process is divided into two steps:

The first step: phosphoric acid extracts phosphate rock. The main reaction formula of phosphoric acid and phosphate rock is as follows:
Ca5F(PO4)3 + 7H3PO4 +5 H2O → 5Ca(H2PO4)2•H2O + HF

The second step: provide appropriate crystal condition, make the byproduct phosphogypsum impurities content reduce significantly, especially the phosphorus content, improve phosphorus recovery, let phosphogypsum meet building materials production requirements, solve the problem of phosphogypsum pollution. The sulfuric acid ionization reaction can finish instant:
Ca(H2PO4)2•H2O + H2SO4 +(n-1)H2O → CaSO4•nH2O  2H3PO4

Process flow diagram