Patent ID: 6582610
Filing Date: 2003-06-24
Classification: C02F,Y10S

Abstract:
A method for recovering water from a concrete grindings fluid slurry containing water, cement particles, and sand, the method comprisingcollecting the concrete grindings slurry from a concrete grinding apparatus that includes water feed apparatus and feeding said slurry to vibratory separation apparatus, treating the fluid slurry with the vibratory separation apparatus, the vibratory separation apparatus having screen apparatus for separating materials, the vibratory separation apparatus producing wet solids including said sand flowing off the top of the screen apparatus and a fluid stream containing water and cement particles, the fluid stream discharged beneath the screen apparatus, feeding at least a portion of the fluid stream to centrifuge apparatus, separating cement particles from the fluid stream with the centrifuge apparatus and producing a stream of water with the centrifuge apparatus, and returning said stream of water for re-use in the concrete grinding apparatus.