METHODS FOR PREVENTION OF SURFACE WATER CONTAMINATION AND AIR POLLUTION BY FLUORINE COMPOUNDS FROM PHOSPHATE PLANTS

METHODS FOR PREVENTION OF SURFACE WATER CONTAMINATION AND AIR POLLUTION BY FLUORINE COMPOUNDS FROM PHOSPHATE PLANTS

Processes for eliminating fluorine contamination of surface waters, and other pollution, by fluorine compounds from phosphate plants, and for recovery of fluorine as hydrofluosilicic acid. The processes involve the separation of fluorine compounds from waste gases by absorption-desorption with NaF,...

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Bibliographische Detailangaben
1. Verfasser: RUFUS G. HARTIG
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Zusammenfassung:Processes for eliminating fluorine contamination of surface waters, and other pollution, by fluorine compounds from phosphate plants, and for recovery of fluorine as hydrofluosilicic acid. The processes involve the separation of fluorine compounds from waste gases by absorption-desorption with NaF, BaF2, or KF, and absorption of SiF4 in water. HF may also be recovered.