Heating – Tumbler-type rotary - drum furnace – Having brick-type lining
Patent
1997-03-03
1999-02-23
Walberg, Teresa J.
Heating
Tumbler-type rotary - drum furnace
Having brick-type lining
432108, 432118, F27B 728
Patent
active
058737146
ABSTRACT:
A kiln for pyro-processing a variety of materials, such as cement, lime, lime sludge, clay, shale, magnesite, dolomite, and other minerals, includes a continuously-rotated, cylindrical, elongated shell having a feed end for receiving the material, a processing zone through which high temperature gases circulate and where the material is processed, and a discharge end where the material leaves the kiln. The shell includes an inner cylindrical surface and defines a longitudinal axis extending from the feed end to the discharge end. In addition, a portion of the inner cylindrical surface includes a lining secured contiguous to the inner cylindrical surface. The lining has an inner face in the shape of a continuous sinusoidal wave with a predetermined amplitude and wavelength. The lining is disposed annularly about the open processing zone and the inner face of the lining includes a plurality of peaks and troughs of equal height and depth for improving the efficiency of the heat transfer between the high temperature gases and the material moving through the kiln, increasing the mixing, revolving, and agitation of the material, and increasing the residence time of the material within the kiln.
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Atwell George C.
Lu Jiping
Reframerica, Inc.
Walberg Teresa J.
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