Cryogenic tire recycling system

Details Cryogenic tire recycling system Cryogenic tire recycling system

1993-12-27

1995-01-31

Eley, Timothy V.

Solid material comminution or disintegration

Apparatus

Including means applying fluid to material

241 65, 241DIG31, 241DIG37, B02C 1826, B02C 2318, B02C 2340, B02C 2100

Patent

active

053853075

ABSTRACT:
The raw material in used tire carcasses is reclaimed by cutting the tire into quarter segments and freezing the segments with liquid nitrogen in a controlled environment freezing chamber. Rotary air locks pass material to and from the chamber. Steel and fiber materials are removed in a stripping chamber where the frozen rubber both broken into smaller chunks. A robot arm with magnets and hooked fingers removes the fiber and steel. The rubber chunks are then pressed through dies to reduce the size to a uniform rubber crumb. The press consists of multiple pointed fingers in registration with multiple sized holes in a screen type die. The rubber crumb is removed with a suction device and dried using heat from a closed loop nitrogen cycle on the way to collection containers.

REFERENCES:
patent: 797202 (1905-08-01), Hodge
patent: 3995816 (1976-12-01), Motek
patent: 4025990 (1977-05-01), Lovette, Jr.
patent: 4342647 (1982-08-01), McMillan et al.
patent: 4405090 (1983-09-01), Wakeem
patent: 4813614 (1989-03-01), Moore et al.

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