The phosphatic clay waste problem--flocculation as a possible solution.
Scheiner BJ; Smelley AG
Miner Process Technol Rev 1985 1:347-361
Flocculation of clay waste has produced dewatered material containing 11% to 27% solids depending upon the technique used. The Bureau of Mines polyethylene oxide dewatering sequence has been tested at four different minesites in Florida. Results obtained and reagent requirements varied depending upon the nature of the clay waste. Dewatered material containing up to 27% solids has been obtained, with 19% to 24% being typical. Also, it has been shown that the level of the water table is an important factor that affects the rate of consolidation of dewatered material when placed in a pit. Results strongly indicate that the clay waste at each mine is different, and in considering a solution to the problem of disposing of the clay waste, the site-specific nature of each mine must be considered.
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