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US 4,256,503 AGranted
Method for effectively utilizing waste tires
AssigneeBridgestone Tire Company Limited
InventorsAkikazu Tsuda, Motokazu Kikuchi, Tadatoshi Shimazaki, Toshio Tsuji, Shunro Ueda, Masamichi Kabaya
Life of this patent
Estimating the term…
Abstract
Waste tires are used in production of cement using a rotary kiln for saving the use of fuel by feeding waste tires as such or crushed waste tire pieces to the position where the temperature of the exhaust gas in this apparatus is 600.degree.-1,400.degree. C. in an amount of not more than 60% of the total used fuel calculated as heat energy.
Claims3
A method for effectively utilizing waste tires in an apparatus for burning cement by means of a rotary kiln, comprising the steps of;
- charging waste tires directly without crushing or crushed waste tire pieces as fuel to a position in said kiln where the gas temperature in this apparatus is 600.degree.-1,400.degree. C., said charging in an amount not exceeding 60% of the total fuel use calculated as heat energy.
Dependencies are inferred from the claim text.