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I used to work for a company that repaired rotary lime kilns. A typical kiln was 12'-16' in diameter, 400' long, and sat on 4 or 5 pairs of rollers (trunnions), and would turn at 1-2rpm. At the heat end it would run 2200 degrees or so, the skin temp 160 degrees. All the properties I saw of course has rail car facilities. Pulp mills also used kilns in the pulping process and were about the same size.

Dick

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