Rotary kiln can be divided into cement kiln, metallurgical chemical kiln and lime kiln according to different materials. Different kinds of kilns have different performance characteristics, so they can be widely used in different industries and play different roles in different industries.

1. In the building materials industry, in addition to calcining cement clinker, rotary kiln is also used to calcine clay, limestone and slag drying; in the production of refractory materials, rotary kiln is used to calcine raw materials to stabilize the size, increase the strength, and then process and shape.

2. In the process of beneficiation, the lean iron ore is magnetized and roasted, so that the original weak magnetism of the ore is changed into strong magnetism, which is beneficial to magnetic separation.

3. In chemical industry, soda is produced, phosphate fertilizer and barium sulfide are burnt. In 1960s, the United States invented a new process of producing phosphoric acid with rotary kiln. This method has the advantages of low energy consumption, less power consumption, no sulfuric acid and low and medium grade phosphate rock.

4. The whole production process of cement can be summarized as "two grinding and one sintering", in which "one burning" refers to the process of burning raw material prepared by grinding into clinker under the high temperature of kiln. Therefore, rotary kiln is the main engine of cement production, commonly known as the "heart" of cement factory.

5. In terms of environmental protection, developed countries in the world have used cement kilns to incinerate hazardous wastes and garbage for more than 20 years, which not only reduces and harmlessly wastes, but also uses wastes as fuel, saves coal powder and makes waste resources.

When choosing rotary kiln products, users should not only find regular manufacturers to ensure the quality of products, but also choose the types of kilns according to the actual production industry, so as to play a better role.