One important use of fluorite is production hydrofluoric acid. It is the production of organic and inorganic fluoride and fluorine elements of the key raw material.
In the aluminium industry, hydrofluoric acid to produce fluoride aluminum, artificial BingJingShi, sodium fluoride and magnesium fluoride. Chemical industry for the quality of the product of high requirement of fluorite, general requirement CaF22 content at 93% ~ 98%, silica and calcium carbonate is harmful impurities, it must be strictly restricted.
Specification in chemical industry for hydrofluoric acid
Grade content | 98 | 97 | 95 | 93 | 90 |
CaF2 %( min) | 98 | 97 | 95 | 93 | 90 |
SiO2%(max) | 0.8 | 1 | 1.4 | 2 | 8 |
CaCO3%(max) | 1 | 1.2 | 1.5 | 1.8 | 2 |
Moisture%(max) | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 |
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caf2>97%