Industrial Solutions Phosphate Fertilizers
#0183;#32;5. Phosphoric acid: Phosphate rock is fed into the reactor at a controlled rate and digested by sulfuric acid, forming phosphoric acid and gypsum (calcium sulfate dihydrate or calcium sulfate hemihydrate). 6. Filtration: The phosphoric acid is separated from the gypsum in a tiltingpan filter or a belt filter and is pumped