Rotary kiln also known as rotary calcining kiln, also known as rotary kiln, is a kind of building materials equipment.

The rotary kiln originated from the cement production. At that time, it was also the vertical kiln, which was used in cement production, which made the cement industry develop rapidly. Therefore, the rotary kiln has been widely used in the production industries of building materials, metallurgy, chemical industry, environmental protection, etc., and plays an increasingly important role in these productions, becoming the core equipment for enterprise production.

The classification of rotary kiln is mainly based on the classification of materials.

Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different processing materials. The cement kiln is mainly used for calcining cement raw materials, making it into cement clinker for the next step of grinding, and by dry method to produce cement kiln and wet process to produce cement kiln. Metallurgical chemical kiln is mainly used for magnetization roasting of iron ore mines in metallurgical industry; refractory plant roasting high alumina bauxite ore and aluminum plant roasting clinker, aluminum hydroxide; chemical plant roasting chrome ore and chrome ore and other minerals . Lime kiln (ie active lime kiln) is used to roast the active lime and light burnt dolomite used in steel plants, ferroalloy plants.

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