Shaft kilns for lime calcining
Shaft Kilns are used to calcine limestone. In a shaft kiln, the limestone moves counter flow to hot gase in the shaft. This gives shaft kilns the lowest fuel consumption of any type of calciner. However, because of the weight of the bed of material in the shaft, there are limits on the size and strenght of the type of limestone that can be calcined.
Metso designs shaft kilns up to 150 tons per day of calcined lime capacity.
For further information see Project summary attachment
120 tpd shaft lime kiln EN (120 kB)