Production situation: limestone is sent to the preheater for heating by the elevator, and then sent to the lime rotary kiln for calcination and decomposition. The decomposed limestone is cooled in the cooler, and then sent to the finished product warehouse by the belt conveyor. Our company's lime rotary kiln production line has advanced technology and simple structure. The preheater can effectively improve the preheating effect. After preheating, the decomposition rate of limestone into the kiln can reach 20-25%, which effectively improves the output of the rotary kiln and reduces the heat consumption.