Vertical Shaft Kiln shells. Cement kiln undisputedly forms the center stage of cement manufacturing process. The cement kiln is involved in the process of burning the raw mixture thereby resulting in the clinker. This clinker is then subjected to grinding to produce cement. In modern cement manufacturing plants, kiln make the most complex and ... The mechanical shaft kiln is continuously operated, so it is higher than ordinary shaft kiln in the aspect of production, quality and labor productivity. According to the requirements of building materials technology and policy, small cement plants should use a mechanized vertical kiln to gradually replace ordinary shaft kiln.