The calciner plays an important role in the cement manufacturing process being the first step of the clinker production process.
The main property of the calciner’s refractory lining is to withstand to the chemical attacks coming from the hot gases of the process. Refractory materials must have low porosity and good thermal stability.
The riser duct is a problematic zone due to: build-ups, alkali infiltration and chemical attack to the steel anchors. Following the general rule, we suggest lining the duct with bricks in the round sections and with castables in the square sections.