With calcining temperatures of approximately 180 ^oC and high particulate dust loading in the exhaust air stream, gypsum calcination kilns require a bag filter upstream of the air to air heat exchangers.

By employing air to air heat exchangers to recover heat, our systems will return hot air for use in pre-heated combustion air and as make-up process air. Return on investment is delivered in approximately 18-24 months.

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