Assertion: potassium cryolite | /r/CapableOf | comprise reacting sodium
Facets:
value: silicouoride
type: OTHER
Source sentences:
text: Continuous process for producing sodium cryolite which comprises reacting sodium silicouoride and dilute sodium carbonate liquor containing a small excess of sodium carbonate to form reaction products consisting essentially of an aqueous solution of sodium fluoride and silica, precipitating the readily iilterable silica separately recovering said aqueous solution of sodium tluoride substantially free of silica, comminuting used carbonaceous cathodes from aluminum reduction cells, leaching with aqueous caustic soda solution to recover an aqueous solution containing sodium aluminate and sodium uoride, admixing said aqueous solutions to provide a combined Solution having a uorine-to-aluminum weight ratio of iluoride and said carbonate liquor are reacted until the pH is from over 7.0 to less than 8.0.