Method and system for recycling construction waste articles

Details Method and system for recycling construction waste articles Method and system for recycling construction waste articles

1998-03-16

1999-11-30

Walsh, Donald P.

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 2412, 241 2414, 241 2415, 241 29, 2411521, 2411522, 241DIG38, 209 3, 209 121, 209 17, 209 38, 209 39, 209930, B02C 100, B02B 502, B03B 904, B03C 130

Patent

active

059927747

ABSTRACT:
A method and system for recycling construction waste articles is disclosed. In the method and system of this invention, construction waste articles are crushed into primary pieces of not larger than 200 mm in size. The primary pieces are screened into aggregate of not smaller than 40 mm in size and earth and sand. The aggregate is washed in a water tank using a water jetting and aeration effect with any floating materials floating on water. The washed aggregate is separated from water using a screen prior to being crushed into final pieces having sizes of 45-75 mm. The final pieces are divided into standard aggregate of not larger than 25 mm in size and substandard aggregate of larger than 25 mm in size. The substandard aggregate is returned to a cone crusher so as to be recrushed.

REFERENCES:
patent: 4813618 (1989-03-01), Cullom
patent: 5333738 (1994-08-01), Fuchs et al.
patent: 5465847 (1995-11-01), Gilmore

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