Abstract
The nature of the slurry from the stone-crushing and sand-making processes is analyzed to develop a novel separation process. The process comprises hydro-cyclone separation followed by screening of the fines, clarification, and filtration. Recovering fine sand and clean wastewater for recycle is demonstrated. The +0.045mm fine sand fraction and −0.045mm ultra-fine clay in the slurry are separated and recovered. Fine sand that was previously lost and wasted is now recoverable. The cleaned and reused water is as much as 94% of the total.
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