Spent Acids | Prayon
The first module is Module 1A where the low-grade phosphate rock is selectively digested in the spent diluted hydrochloric acid (HCl). This reaction produces a slurry of undigested phosphate rock as a solid with phosphate and calcium chloride (CaCl 2) in solution.In Module 1B, the phosphate solution is treated with CaCO 3 to obtain dicalcium …
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