The Phosphatic Clay Waste Problem#x2014;Flocculation as a Possible Solution

摘要

The problem of disposing of the minus 150-mesh phosphate clay waste generated during mining of phosphate rock is described. Flocculation techniques such as the Bureau of Mines polyethylene oxide-screen dewatering system are discussed. Results from field test dewatering experiments with the Bureau technique, at three different phosphate mines, showed that material initially containing about 2 to 4 solids was dewatered to a solids content of 19 to 24. The dewatered material, when placed in a pit, continued to dewater. Results for several experiments are discussed.