Tertiary air duct damper is provided for trustworthy setting of the tertiary air gases, to balance the combustion air flow between the kiln and calciner.

Damper is designed as steel meshed plate with refractory and closed housing.

• Measurement and control of tertiary air to the calciner
• Stabilize rotary kiln operation
• Actuated by motorized acutater
• The damper blade supplied together with refractory​
• 100% in operational guarantee
• Blade is precasted and pre-heated to 1100 C for ceramization