Method for incinerating refuse and for treating the resulting slag
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United States of America Patent
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-
Aug 1, 2000
Grant Date -
N/A
app pub date -
Oct 9, 1998
filing date -
Oct 13, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the incineration of refuse in an incineration cylindrical rotary kiln and for treating the resulting slag from the incineration of the refuse. The method includes the steps of removing the slag or ash from the cylindrical rotary kiln in a dry state and immediately separating the slag or ash in a first screening stage into at least two fractions, including a first fraction or screen underflow having a particle size of less than 32 mm. The method includes the further steps of feeding the first fraction or screen underflow to a second classifying stage where the first fraction or screen underflow is separated into a fine function having a particle size of up to 2 mm and the further step of returning at least part of the fine fraction to an air-inlet side of the cylindrical rotary kiln for incineration of the fine fraction.
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