A clinker rotary kiln can consist of a single shell or many, though any more than three drums is not usually necessary. Clinker rotary kiln can reduce the amount of space that the equipment consumes. Multi-shell dryers consist of several concentric tubes. Multiple shells allow the dryer to be utilized in a more compact space. The drums are often heated directly by oil or gas burners.

The addition of a combustion chamber on the entry end helps ensure efficient fuel usage, and that homogenous drying air temperatures. As the material moves through the rotating drum is heated and moisture released. Some dryers also offer the option to cool, clean, shred, and/or separate the dried material. Cement production line in the 1950 s, not Germany had dropped to 359 kj/clinker rotary kiln body heat, and into the kiln body heat in the 1980 s in China is still as high as 669 a 1045 kj/clinker, heat 310-686 kj/clinker. How cooler heat 167-209 u/clinker, grate cooler heat dissipation is less, but after winds take away heat up to 146-350 kj/clinker.

Can be in higher thermal efficiency through the use of the pre-heater system, optimize the system control parameters to reduce the exhaust gas temperature, controlling reasonable excess air coefficient. As technology advances, the clinker rotary kiln technology will also continuous improvement to upgrade, strive to solve the problem of high heat consumption. Chemical production of a large number of products are used in the field of the device. Compared to the traditional mode of production, the advantages of rotary kiln is the production process uses less power, the whole process is not cost too much power, also get rid of the present situation of sulfuric acid to produce phosphoric acid must be used before. But there are still some problems need to face that is using rotary kiln production cost is higher.

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