Record Display for the EPA National Library Catalog
RECORD NUMBER: 517 OF 765| Main Title | Recovery of Fluorides in Aluminium Production (Pre-Baked Anodes) by Improved Gas Collection (Hooding) and Dry Scrubbing of Gas. | |||||||||||
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| CORP Author | Economic Commission for Europe (UN), Geneva (Switzerland).;Environmental Protection Agency, Washington, DC. | |||||||||||
| Publisher | 13 Jul 81 | |||||||||||
| Year Published | 1981 | |||||||||||
| Stock Number | PB95-233730 | |||||||||||
| Additional Subjects | Aluminum ; Materials recovery ; Air pollution control ; Industrial wastes ; Chemical plants ; Fluorides ; Chemical reactors ; Gas scrubbing ; Aluminum oxide ; Pollution control ; Technology transfer ; Utilization ; | |||||||||||
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| Collation | 15p | |||||||||||
| Abstract | Hooded pots, with pre-baked anodes allow gas collecting efficiency up to 98 percent. Gas cleaning accomplished by dry scrubbing and recycling of fluorides in pot gas. The ASV dry scrubber/reactor is in the commercial development stage. The main objective of the reactor is to increase the residence time of the gas/alumina and thereby reduce the amount of alumina needed in the dry scrubber. The system effects almost complete removal of the solid and gaseous fluorides collected from the pot gas. At the same time, other particulates, such as alumina, carbon etc. are also removed. |