The advantage for customers is lower investment and operating costs. No wonder these systems quickly gained excellent reputations among our customers.

Great wall rotary kiln offers other advantages:

• Investment costs approx. 15% lower than three station kilns.

• The lower space requirements and lower weights lead to more favorable construction costs.

• Mechanical overloading is impossible. This results in higher levels of operational reliability and lower maintenance costs.

• Lower consumption of refractory lining.

• The reduced required power and lower radiation losses reduces energy costs.

• The tire at the kiln discharge

The drive components

Either single, double or triple reduction gearboxes are used, depending on the torque to be transmitted. These are the most common types of drive for rotary kilns because they have a high degree of efficiency and long-term economic design.

Even, smooth operation of the kiln and optimal contact pattern with the pinion is achieved by mounting the girth gear on the kiln shell using tangential springs. The centered action of the girth gear is adjustable.

How ensure a long service life of the refractory lining?

In order to ensure along service life of their factory lining, the kiln shell is optimized for minimum stress and deformation. The shell plate thickness Changes with corresponding shell stresses, which are determined from bending and tangential shell stress loads. This ensures optimal safety to material elasticity limit sat operating temperature. Elastic shell deformations remain within narrow limits.

The high efficiency and low wear rates of great wall kiln seals make important contributions to economical kiln operation. The proven spring loaded segmented seals, which were developed by great wall, are fitted to the kiln inlet and outlet. The pressure elements, springs and levers, rotate with the kiln, so they can be easily accessed at any time. Our rotary kilns can also be supplied with pneumatically operated seals. Pressure is applied to the movable suspended sealing ring by a number of stationary mounted pneumatic cylinders.

 The forged rollers and cast tires have solid rectangular profiles. They are manufactured without relief or drilled holes to ensure that no notch stresses or stress concentrations occur. The tires of the kiln are designed according to Nixes for maximum joviality of 0.15 to 0.2 percent of the nominal kiln diameter. This guarantees the rigidity of the tires.

 One special feature is the constraint free and low-maintenance tire fastening system, which reliably transmits all loads via large contact surfaces at low surface pressure from the kiln shell to the tire. This also applies to the driving torque if the kiln is powered by a friction drive. This connection also maintains a perfect contact pattern between the tire and rollers.