Machine for salvaging waste concrete material

Details Machine for salvaging waste concrete material Machine for salvaging waste concrete material

1977-03-04

1978-11-28

Halper, Robert

Classifying, separating, and assorting solids

Sifting

Feeding and discharging

209270, 209297, B07B 124

Patent

active

041274784

ABSTRACT:
A machine for receiving mixed concrete from a ready mix truck provides a receiving hopper and an elevator for lifting the material therefrom arranged to discharge it into a classifying rotating drum incorporating a spiral conveyor into which water is sprayed during use. A sump and a secondary conveyor are positioned beneath the classifying drum so that the separated sands, aggregate and other material, washed and separated from the concrete mix, introduced with the cement and waste water are confined to the sump and a separate settling tank from which the fine sands and similar materials can be salvaged.

REFERENCES:
patent: 2331135 (1943-10-01), Ovestrud
patent: 2599402 (1952-06-01), Lindsey
patent: 2836299 (1958-05-01), Johnson
patent: 2919808 (1960-01-01), Hilkemeier
patent: 2942731 (1960-06-01), Soldini
patent: 2983378 (1961-05-01), Hilkemeier
patent: 3297410 (1967-01-01), De Iisle
patent: 3541738 (1970-11-01), Rampe
patent: 3596759 (1971-08-01), King et al.
patent: 3729087 (1973-04-01), Bruns

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