Pure fluorspar, CaF2, contains 51% calcium and 49% fluoride. Three principal grades are available commercially; acid grade with 97%+ CaF2; ceramic grade 85–96% CaF2; and metallurgical grade 60%+ CaF2. The above reserve figures refer to 100% CaF2 equivalent. On the same basis, the reserve base is 310 million tonnes.
KeywordsHydrofluoric Acid Phosphate Rock Reserve Base Primary Aluminium Production Acid Grade
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