A Progress Report on Large-scale Dewatering Tests of Northern Florida Phosphate Clay Waste.
Smelley-AG; Scheiner-BJ; Brooks-DR
Proc Consolidation and Dewatering of Fine Particles Conf 1982 Aug; :265-284
The Bureau of Mines is testing a dewatering technique for phosphate clay waste that will recover a portion of the water now being lost using conventional waste disposal methods and produce solids suitable for land reclamation. The techniques uses a flocculant, polyethylene oxide (peo), that forms strong, stable flocs that can be dewatered on a static screen followed by further dewatering on a rotary screen. In field tests conducted in northern Florida, clay wastes containing a nominal 2.5 pct solids have been consolidated to greater than 20 pct solids. The rate at which peo-treated material continues to dewater in a mine cut is also being investigated. Preliminary results indicate that peo-treated material will dewater to 29 pct solids in 127 days.
Proc. Consolidation and Dewatering of Fine Particles Conf., August 10-12, 1982, PP. 265-284