The Lime Kiln 3.2x50 is a rotary kiln purpose-built for calcining limestone into quicklime. Limestone is fed at the upper end and travels down the gently sloping, slowly rotating barrel, where it is heated by a burner to between 1250 and 1350 degrees Celsius. At this temperature the carbonate decomposes, driving off carbon dioxide and leaving a highly reactive, evenly burned lime. The barrel is lined with refractory brick and supported on riding rings, and the controlled kiln
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