Assertion: hydrogen fluoride | /r/HasProperty | recirculated through the outlet line
Facets:
Source sentences:
text: The solid materials, sodium fluoride and sodium fluosilicate, are removed at the base of the cyclone 32, while the hydrogen fluoride is recirculated through the outlet line 44 and fan 34 to the preheater 36, and thence via line 29 for the entrainment of a further portion of the sodium bifluoride-sodium fluosilicate mixture.