It has been fully proved by the production experience that the new rotary kiln can adapt to any kind of raw materials and fuels and have greater adaptability than the general precalciner kiln.
Because the temperature of the firing zone can be reduced, the gas velocity in the kiln can be also decreased, which can not only improve the heat transfer, but also can reduce the recirculation of the clinker dust. Combining with the favorable factors in the mechanical aspects, the service life of the firebrick is greatly improved and the brick consumption is significantly reduced. As for the general precalciner kilns, the internationally advanced brick consumption indicators per ton of clinker is 0.5~0.6 kg / t, while that of the new rotary kiln can be reduced to 0.15 to 0.20 kg / t, having reduced by about 60%. The decrease of the brick consumption has a great significance in reducing the cost of cement.
The body length of the new rotary kiln can be shorter more than 20% than that of the conventional precalciner kiln, which greatly improves the factors that are process-related. In addition, the mechanical advantages are also prominent. The structure becomes the statically determinate system from the statically indeterminate systems. In this way, the sink of the base or the deformation and bent of the cylinder will not cause the overload of the cylinder, roller and tire and transmission mechanism and will not cause the uneven contact between the roller and the make that the force of both sides of the supporting roller is not balanced. Therefore, the accident of the breakage of the cylinder and shaft, the excessive temperature of the bearing, bush-burning and the excessive and uneven wear of the roller and wheel can be avoided, greatly improving the reliability. In addition, the new rotary kiln creates the necessary conditions for the realization of the advanced friction transmission.