C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 7/07 (2006.01) A62D 3/00 (2006.01)
Patent
CA 2232131
The invention concerns a method of processing fluorine-contaminated hydrochloric acid arising from waste treatment, the method calling for the acid to be concentrated by the removal of water in a circuit round which it is entrained by an aqueous solution of water-binding and fluorine-binding agents. Contained in the entrainer solution is a precipitating agent which binds both fluoride and silicon as solids which are precipitated out in the form of a sludge.
L'invention concerne un procédé de traitement d'un acide chlorhydrique résiduaire ou d'acide brut contaminé par du fluor, selon lequel on effectue une rectification déshydrogénante, à l'aide d'un circuit d'agent entraînant, dans lequel circule une solution aqueuse de substances liant l'eau et le fluorure. L'agent entraînant contient un agent de précipitation qui fixe le fluor de même que le silicium sous forme de solides sous la forme d'une boue.
Ainscow Stuart
Sittkus Rudolf
Weilenmann Max
Ct Umwelttechnik Ag
Fetherstonhaugh & Co.
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