Method and apparatus for clearing a powder accumulation in a powder delivery tube
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United States of America Patent
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-
Dec 28, 2004
Grant Date -
Jul 24, 2003
app pub date -
Jan 22, 2002
filing date -
Jan 22, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for monitoring coal flow through a coal delivery tube in a blast furnace fuel injection system is disclosed, which system automatically actuates a purge cycle for clearing accumulations of coal from a coal lance when a temperature drop indicative of an imminent blockage is detected. A method of controlling the purge system is also disclosed.
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