Producing ground scrap tire rubber: A comparison between ambient and cryogenic technologies

Conference · Sun Sep 01 04:00:00 EDT 1996

OSTI ID:287507

Blumenthal, M H ^[1]

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1. Scrap Tire Management Council, Washington, DC (United States)

Prior to 1985, few, if any scrap tires were processed. The Minnesota program changed all that. The equipment first introduced to process scrap tires consisted of redesigned wood or metal shredders. The performance of these systems left much to be desired. In the past 10 years, many companies and equipment systems, designed especially for scrap tires, have come into existence. Until recently, scrap tires were typically processed by ambient systems. These systems consist of a mechanical process, which cuts and or grinds whole tire rubber into the desired sized particle at room temperatures. Historically, producing ground rubber, like all other rubber processing, was done by an ambient processes system. Within the last several years, cryogenic processing of scrap tires has been introduced for the preparation of ground rubber. In the cryogenic process, rubber is introduced into a bath of liquid nitrogen, instantly freezing the rubber. Once embrittled, the rubber is struck with an impact devise, effectively shattering the rubber.

• OSTI ID: 287507
• Report Number(s): CONF-960345--; ISBN 0-7918-1227-8
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CRYOGENICS
MATERIALS RECOVERY
RECYCLING
RUBBERS
TIRES
WASTE MANAGEMENT