Slagging rotary kiln
AssigneeWestinghouse Electric Corp.
InventorsRaymond J. Frericks, Johnny H. Price, Jr.
Life of this patent
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Abstract
An improved kiln wherein a smile shaped oil cooled refractory support is shortened so its distal end is adjacent the outside end of a front nose ring on a rotatable kiln drum, the nose ring being extended radially inwardly to shield the distal end of the smile shaped support from radiant energy from the kiln drum and direct combustion air over the distal end of the smile shaped support to prevent thermally induced stress cracking and substantially reduce the amount of partially burned material that spills over the front nose ring.
Claims7
An improved kiln for burning waste, the kiln having a rotatable refractory lined kiln drum with a raised front nose ring and a front wall with a smile shaped oil cooled refractory support cantilevered from the front wall to support a cantilevered refractory portion which extends into the rotatable drum wherein the improvement comprises:
- the smile shaped oil cooled refractory support having a length so that its distal end is adjacent the edge of the front end of the front nose ring of the rotatable kiln drum;
- the nose ring having a height so that it extends radially inwardly beyond the lower portion of the smile shaped oil cooled refractory support;
- and the cantilevered refractory portion extends into the rotatable kiln drum beyond the smile shaped front wall support structure and over the heightened nose ring, whereby combustion air flows over the distal end of the smile shaped oil cooled refractory support to provide cooling, increase the life thereof and substantially reduce the amount of waste running over the front nose ring.
Dependencies are inferred from the claim text.