Method for manufacturing a cement clinker, and cement clinker manufacturing facility
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United States of America Patent
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Feb 11, 2014
Grant Date -
Mar 17, 2011
app pub date -
Jun 2, 2009
filing date -
Jun 3, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A method for manufacturing a cement clinker includes a rotary furnace, a cyclone preheater receiving the fumes from said rotary furnace, an air blowing clinker cooler, and at least one heat exchanger, referred to as a first heat exchanger. The raw materials are preheated and decarbonated in said cyclone preheater. The clinker is cooled in said clinker cooler. A first portion of the hot air generated by said clinker cooler, or so-called secondary air, is directed to the rotary furnace to be used as combustion air. A second portion of the hot air generated, or so-called tertiary air, is directed and carried separately from the first portion to a place in the facility where fuel is burned. A third portion of hot air generated in said clinker cooler, or so-called excess air, is carried into at least said first heat exchanger for the purpose of recovering power to produce electricity.
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