A lime kiln is an important piece of equipment used to calcine limestone to produce quicklime. Based on differences in structure, working principle, and fuel used, lime kilns can be classified into various types, mainly including vertical lime kilns, double-chamber kilns, rotary kilns, sleeve kilns, and double-beam kilns.
Vertical Lime Kiln
A vertical lime kiln is a vertical, cylindrical, intermittent production unit, typically consisting of a kiln body, combustion chamber, feeding device, and discharge device.
Double-Heat Kiln
A double-heat kiln is a common lime production unit, also known as a double-heat lime kiln furnace. It mainly consists of two adjacent circular kiln chambers, each with an independent combustion chamber. The two chambers are connected by a channel for heat exchange.
Rotary Kiln
A rotary kiln is a continuous lime kiln with an advanced structure. Both ends use combined scale seals to reduce air leakage and radiant heat loss. Lime rotary kilns typically use composite refractory materials to improve preheating efficiency.
Sleeve Kiln
A sleeve kiln is a lime kiln characterized by low heat consumption, high lime activity, simple structure, and strong fuel adaptability. It consists of an inner and outer cylinder arranged concentrically to form an annular space where limestone is calcined. The calcination method of the sleeve kiln combines counter-current and co-current calcination, which ensures complete decomposition of lime and improves its activity.
Double Beam Kiln
The double beam kiln is a lime kiln with a simple structure, no irregularly shaped refractory bricks, and simple and convenient construction. It uses a beam burner system for combustion, resulting in stable product quality, high activity, and low energy consumption.
