Shaft preheater
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United States of America Patent
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Mar 27, 2007
Grant Date -
May 12, 2005
app pub date -
Nov 2, 2004
filing date -
Nov 12, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a shaft preheater for preheating material in lump form with at least one shaft for receiving the material, a bridge disposed in the shaft for delivering hot gases which flow through the material from the bottom upwards, and a device for filling the shaft with the material such that the shaft is charged centrally thereby developing a filling cone. The bridge is disposed at an inclination corresponding to the filling cone in order to guarantee an even flow through the fill. The device for filling the shaft comprises a vertically adjustable feed chute.
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