Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Elimination of water pollution by recycling cement plant kiln dust /
Author Greening, N. R. ; Miller, F. M. ; Weiss, C. H. ; Nagao., H.
CORP Author Portland Cement Association, Skokie, Ill.;Industrial Environmental Research Lab., Cincinnati, Ohio.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; Avail. through the National Technical Information Center,
Year Published 1976
Report Number EPA-600/2-76-194; EPA-S-802196; PB259080
Stock Number PB-259 080
OCLC Number 06294308
Subjects Water--Pollution. ; Fly ash--Environmental aspects. ; Cement plants--Dust control.
Additional Subjects Portland cements ; Alkalies ; Air pollution control ; Water pollution control ; Dust collection ; Solid waste disposal ; Flue dust ; Dust control ; Flame spraying ; Alkali metal compounds ; Industrial waste treatment ; Vaporization ; Fines ; Fluidized bed processing ; Sulfates ; Calcium oxides ; Limestone ; Cement industry
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-2-76-194 Headquarters Library/Washington,DC 07/15/2014
EJBD  EPA 600-2-76-194 Headquarters Library/Washington,DC 10/31/2016
ERAD  EPA 600/2-76-194 Region 9 Library/San Francisco,CA 09/17/2012
ESAD  EPA 600-2-76-194 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-259 080 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation vii, 61 pages : illustrations ; 28 cm.
Excessive amounts of alkalies can have deleterious effects upon the process of cement manufacture and the product. Normally much of the alkali present in cement raw materials is volatilized in the cement kiln and condenses on the particles of kiln dust which are carried out of the kiln by the combustion gases. Air pollution control devices, such as electrostatic precipitators and fabric filters, collect this dust. If it is subsequently returned to the kiln, an equilibrium circulating load of alkali is established. When this load is too high, serious kiln 'ring' formation can occur, which often leads to problems with operational continuity, as the alkalies alternately vaporize and condense. It is often necessary to discard at least a portion of the kiln dust. This disposal also represents poor land use, and can create a water pollution problem because of leachable alkali salts. This study reports on the determination of the feasibility of separation of cement plant kiln dust, into fractions which are alkali-rich and alkali-poor, by fluidized bed and flame-spray methods. The parameters varied were: The feeding system and fluidizing arrangement, the portion of the system designed for alkali entrapment, the dust collection mechanism, the temperature of the flame and collection system, and the collecting medium itself.
Grant no. 802196. Includes bibliographical references (page 60).