Assertion: hydrogen fluoride's amount | /r/HasProperty | heated at 120 c.
Facets:
value: to 200 0, equivalent
type: OTHER
Source sentences:
text: The process of claim 1 wherein said slurry is fed continuously onto an amount of calcium sulfate heated at 120 C. to 200 0, equivalent to 1 to 3 moles per mole of fluorspar, contained in a reactor maintained at a temperature greater than C., withdrawing the calcium sulfate residue and recycling an amount equivalent to 1 to 3 moles per mole of fluorspar to the reactor and recovering evolved hydrogen fluoride.