Method for processing rubber granules or rubber powders

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United States of America Patent

PATENT NO 9221060
APP PUB NO 20130225766A1
SERIAL NO

13857015

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Abstract

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A method for processing rubber granules or rubber powders containing different types of rubber. Vehicle tires containing natural rubber in the tread and butyl rubber in the inner liner are granulated or ground to prepare rubber granules or rubber powders, which are processed in a flotation cell under stirring and with the addition of air. The natural rubber fraction of the rubber granules has a higher tendency to adsorb air bubbles and to rise in the flotation cell, while the butyl rubber fraction remains at the bottom. The rubber granules are separated into two or more rubber fractions with an increased amount of a specific rubber type in each fraction.

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Patent Owner(s)

Patent OwnerAddress
CONTINENTAL REIFEN DEUTSCHLAND GMBHHANNOVER

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Theusner, Martin Gehrden, DE 3 8

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