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US 6,310,264 B1Granted
Method for processing material comprising aluminum and plastic
AssigneeAlcoa Nederland B.V.
InventorRonald Gerard Kamst
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Abstract
A method for processing material comprising combinations of aluminum and plastic, such as aluminum bottle caps having a plastic coating, comprising the steps of: pyrolyzing the plastic in an inert atmosphere, cracking or gasifying the gases or vapours which are released in the course of pyrolysis, afterburning the coke which remains behind on the aluminum in the course or pyrolysis. The gases or vapours released are recirculated and are used, during pyrolysis, as an inert, oxygen-free medium.
Claims10
Method for processing material comprising combinations of aluminum and plastic, comprising the steps of:
- pyrolyzing the plastic in an inert atmosphere by heating up to a temperature of approximately 550° C. so as to release gases or vapours,
- feeding the gases or vapours which are released in the course of pyrolysis to a gasifier so as to perform a cracking operation,
- afterburning coke which remains behind on the aluminum in the course of pyrolysis.
Dependencies are inferred from the claim text.