Record Display for the EPA National Library Catalog


Main Title Elimination of washer slimes from the production of phosphate chemicals /
Author Cannon, Raybon C. ; Ribas, Roger S. ; Nickerson, J. David ; Weisback., Robert A.
Other Authors
Author Title of a Work
Cannon, Raybon C.
CORP Author Florida State Dept. of Environmental Regulation, Tallahassee.;Industrial Environmental Research Lab., Research Triangle Park, N.C.;United States Steel Corp., Decatur, Ga. USS Agri-Chemicals Div.
Publisher Environmental Protection Agency. Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1976
Report Number EPA-600/2-76-045; EPA-S-802684; EPA-ROAP-21AZR-007
Stock Number 22161
OCLC Number 03825149
ISBN pbk.
Subjects Phosphates ; Chemical engineering
Additional Subjects Phosphoric acids ; Phosphate deposits ; Solid waste disposal ; Slime ; Roasting ; Water pollution ; Sulfuric acid ; Composite materials ; Clays ; Trace elements ; Beneficiation ; Mining ; Digestion(Decomposition) ; Filtration ; Florida ; Dry methods ; Phosphate rock slime ; Phosphate mining ; Phosphate industry
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-76-045 c.1 Headquarters Library/Washington,DC 04/03/2014
EKBD  EPA-600/2-76-045 Research Triangle Park Library/RTP, NC 06/13/2003
ELBD ARCHIVE EPA 600-2-76-045 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-2-76-045 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-250 364 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation v, 132 pages : illustrations ; 28 cm.
The report gives results of laboratory studies to determine the feasibility of a new phosphoric acid process involving dry mining of the matrix, calcination, and digestion with phosphoric/sulfuric acid mixtures (five types of Florida phosphate matrices were used). Process steps included upgrading the matrix by dry methods, calcination in a static bed, and digestion comparable to commercial dihydrate processes. The matrix samples were upgraded by removing clay by selective grinding and air classification, and by separation of the sand fraction electrostatically. Typical clay removal values were 80-90% at a phosphate loss of 15-25%. Calcination produced an acceptable phosphoric acid from good quality matrix, but failed to reject metal impurities sufficiently to permit processing of poor-to-average matrix. Calcination eliminated the interference of clay in the digestion and filtration steps. Addition of mineralizers had only marginal effect on metal solubility.
"EPA-600/2-76-045." Prepared by United States Steel Corporation for State of Florida, Department of Environmental Regulation under Grant S802684, ROAP No. 21AZR-007, Program Element No. 1BB036. Issued Mar. 1976. Includes bibliographical references.