Heating – Tumbler-type rotary - drum furnace – Externally heated drum or associated heating element heats...
Reexamination Certificate
2007-05-07
2009-02-10
Wilson, Gregory A (Department: 3749)
Heating
Tumbler-type rotary - drum furnace
Externally heated drum or associated heating element heats...
C432S117000
Reexamination Certificate
active
07488172
ABSTRACT:
A method is described for reducing NOxemissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/precalciner vessel.
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Hansen Eric R.
Supelak Ralph A.
Tutt James R.
Ash Grove Cement Company
Barnes & Thornburg LLP
Cadence Environmental Energy, Inc.
Wilson Gregory A
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