rotary lime kiln

Rotary kiln is the main equipment of calcining the cement clinker. The characteristics of a rotary kiln are with simple structure, convenient and reliable control of the producing process,with little wearing parts and high running rate. It is the equipment calcining the high grad cement in the cement factory. The rotary kiln is widely used in the metallurgy,chemical industry,construction and other industries.

1) The rotary kiln is an inclined rotary cylinder, the raw material enter the cylinder through the high end of the machine,then move in with the movement of of the rotary kiln. Therefore, the rotary kiln is a conveying equipment.

2) Rotary kiln is a combustion device.

3) Rotary kiln has the function of heat exchange.

4) Rotary kiln has the chemical reaction function.

5) The rotary kiln has the function of degrading and re-using the waste.

The basic components of a rotary kiln are the shell, the refractory lining, support tyres and rollers,drive gear and internal heat exchangers.

The kiln connects with a material exit hood at the lower end and to ducts for waste gases. This requires gas-tight seals at either end of the kiln. The exhaust gas may go to waste, or may enter a preheater which further exchanges heat with the entering feed. The gases must be drawn through the kiln, and the preheater if fitted, by a fan situated at the exhaust end. In preheater installations which may have a high pressure-drop, a lot of fan power may be needed, and the fan is often then largest drive in the kiln system. Exhaust gases contain dust and there may be undesirable constituents such as sulfur dioxide or hydrogen chloride. Equipment is installed to scrub these out before the exhaust gases pass to atmosphere.

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Quick Lime, Cement Clinker Rotary Kiln

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