Plastic and nonmetallic article shaping or treating: processes – Recycling of reclaimed or purified process material – Of gaseous process material
Patent
1995-10-16
1998-06-16
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Recycling of reclaimed or purified process material
Of gaseous process material
264140, 264152, 264162, 264313, 264334, 264DIG69, B28B 710
Patent
active
057665249
ABSTRACT:
A method and apparatus for recovering concrete returned to the plant by delivery truck empties the delivery trucks into hoppers that dispense the so delivered left over concrete into molds designed to produce blocks of concrete suitable for regrinding into aggregate. The molded blocks are held in the molds for sufficient time to set the concrete for grinding before the blocks are separated from the molds. The molded blocks are then delivered to a grinding station where they are ground into aggregate of selected size for return to the concrete mixing operation. Any water that separates during the molding operation is subject to a settling operation to settle fine particles and the decanted water is then stored in a suitable reservoir for reuse, for example, in washing out the trucks.
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AbouRizk Seman M.
Rashwan Mohammed M. S.
Aftergut Karen
Governors of the University of Alberta
Rowley C. A.
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