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A review of phosphatic clay dewatering research.

Authors
Pittman-WE Jr.; McLendon-JT; Sweeney-JW
Source
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, IC 8980, 1984 Jan; :1-29
Link
NIOSHTIC No.
10003864
Abstract
This Bureau of Mines study surveys the current state of technology and the various research efforts that have been undertaken to dewater the dilute phosphatic clays generated in the production of phosphate rock. The research described includes early dewatering experiments, fundamental studies of clays and of flocculation, and minor dewatering techniques such as freeze-thaw methods, the ANDCO process, moving screens, sand wick, crust development, and overburden pumping. Some methods that are currently being evaluated are described. They include the Estech sand-clay mix process using the enviro-clear thickener, sand-clay sandwiching, dredge mix, dredge process, and the sand-spray process. Developing technology for dewatering phosphatic clays also is described, including the Bureau of Mines rotary trommel method and the Gardinier process. This report is based upon work done under an agreement between the Florida Institute of Phosphate Research and the Bureau of Mines.
Keywords
Beneficiation; Clays; Solid-waste-disposal; Reviews; Dewatering; Flocculation
Publication Date
19840101
Document Type
IH; Information Circular
Fiscal Year
1984
NTIS Accession No.
PB84-225937
NTIS Price
A03
Identifying No.
IC-8980
NIOSH Division
TURC
Source Name
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, IC 8980
State
FL; AL
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