Design of Single Cylinder Cooler for Rotary Kiln

Single cylinder cooler for rotary kiln has the advantages of simple operation, low power consumption, wide application range, flexible process layout, easy operation, convenient maintenance, no exhaust gas emission (no need for dust collector), investment and so on. Single cylinder cooler for rotary kiln is the best choice, especially in the new building or transformation of the small and medium-sized rotary kiln. However, The problems that life is short, large heat loss, low heat loss and high thermal efficiency of material temperature exist in old single cylinder cooler for rotary kiln, In this paper, we discussed the main parameters, cooling device and configuration of the single cylinder cooler for rotary kiln based on the analysis of the principle of the movement of the clinker in the cylinder.
Single cylinder cooler for rotary kiln high temperature zone masonry refractory brick to protect the cylinder and reduce the loss of bulk. In the low temperature region, the installation of the lifting hopper or lifting plate, in order to strengthen the clinker and the air cooling heat exchange efficiency. The cylinder is inclined to install supporting wheel group in the two block support, driven by the device which is fixed on the drum gear. The clinker is moving from the feeding (high) end to lower end of the material (low), The cooling air flow from low to high. In this process, the clinker and air are mainly heat exchange by convection. High temperature clinker is discharged after being cooled.
Pure refractory brick zone of the single cylinder cooler for rotary kiln should not be too long, otherwise it will affect the rapid cooling of clinker, and at the same time, secondary wind temperature is also difficult to improve. However, due to the high temperature zone of lifter life is short, the replacement of lifter is time-consuming and expensive, heat loss is large, so the refractory brick zone can not be too short. Lengthening the lifting plate area and the formation of continuous and uniform distribution of material screen is important measure to improve the thermal efficiency of single cylinder cooler. Lifting hopper, hopper brick being mixed is the solution to this contradiction, and achieved good results. In addition, the reasonable design of the main parameters and the internal device and configuration are essential to improve the performance of the single cylinder cooler for rotary kiln.