Lime development process: 8th century BC, the ancient Greeks have been used in construction, China is also the 7th century BC to start using lime. So far lime is still widely used in building materials. Because of its wide distribution of raw materials lime kiln active lime sales, production process is simple and low cost. Lime has a strong alkaline, at room temperature, can be active or activated alumina silica glass and the reaction to generate product water have rigid, to produce cement. Therefore, lime is an important raw material in the building materials industry. Lime: lime product is an after calcination obtained. It is through the actual characteristics of the calcined general performance: it is a granular active lime kiln sales, with a certain particle size, surface cleaning rotary kiln lime plant, loose texture, color white, lightweight lime kiln, raw heart small, containing less heat, cooling cooling fast, strong reaction with water, there is almost explosive reaction of light (soft) burnt lime.