Record Display for the EPA National Library Catalog


Main Title Utilization of phosphate slimes /
Author Vasan, Srini. ; Vasa, Srini
CORP Author International Minerals and Chemical Corporation.
Publisher United States Environmental Protection Agency, Water Quality Office,
Year Published 1971
Report Number EPA 140-R-71-004; 14050 EPU 08/71; EPA-WQO-14050-EPU; 13517,
Stock Number PB-203 191
OCLC Number 00240768
Subjects Phosphate mines and mining--Waste disposal ; Aggregates (Building materials)
Additional Subjects ( Phosphate deposites ; Materials recovery) ; ( Lightweight aggregates ; Phosphates) ; ( Mining ; Industrial waste treatment) ; Clays ; Pelleting ; Lightweight concretes ; Slurries ; Spoil ; Dewatering ; Fluidized bed processors ; Kilns ; Phosphate mining ; Phosphate rock slime ; Solid waste disposal
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 140-R-71-004 Headquarters Library/Washington,DC 05/30/2014
ELBD ARCHIVE EPA 140-R-71-004 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB-203 191 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation x, 128 pages : illustrations, figures, tables ; 28 cm.
Phosphate slimes have been produced by the Florida phosphate mining industry at the rate millions of cubic yards per year and the volume is increasing. The water retentive characteristics of the clays which are mined with the rock are such that there is more volume of phosphate slime to dispose of than there was actual rock mined. Small scale tests of the slimes were made to assess the feasibility of their use as building materials. A process was developed and demonstrated to be capable of producing a pelletized, light-weight aggregate, and finally a light-weight concrete from the slimes. The four major processing steps: pumping of clay slurries of 3 to 30% solids; slime drying in a fluid bed dryer; pelletizing the dried product and kilning the product to a suitable aggregate, were investigated in batch and suitable equipment was selected. Aggretage production could use up to 6-8 million tons of clay solids annually, releasing up to 5 billion gallons of water to the environment.
"August 1971." Includes bibliographical references.