Solid material comminution or disintegration – Processes
Patent
1993-03-31
1994-05-17
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
241 15, 241 20, 241 41, 241 72, 241 793, 241301, B02C 1702, B02C 2318
Patent
active
053120515
ABSTRACT:
A concrete reclaimer includes a concrete processor having a rotating inclined screen and a pipe discharging water. Fresh concrete being disposed is poured into an open end of the rotating screen, and migrates toward the opposite open end. The concrete passes over a fine mesh and then a coarse mesh screen, washing out cement slurry when passing over the former, and removing sand when passing over the latter. Gravel is discharged from the remaining screen open end. Specially configured nozzles are arranged in a particular pattern along the pipe. Collection and storage pits are provided for the resultant segregated cement slurry, sand, and gravel. In a preferred embodiment, a concrete processor includes a five horsepower pump and a ten horsepower screen rotation motor. With the screen inclined at 8 degrees from the horizontal and rotating so as to move the screen past an arbitrary stationary reference point at 330 feet per minute and with water being fed at 178 gallons per minute at a pressure of 12 pounds per square inch, the concrete processor separates one cubic yard of concrete per minute.
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Haahjem North America, Inc.
Husar John M.
Litman Richard C.
Rosenbaum Mark
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