The structure of rotary kiln-Henan Dingxin Equipment Technology Co., Ltd._Rotary Kiln

The structure of rotary kiln

2024-05-28

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A rotary kiln is a large cylindrical industrial furnace used for a variety of thermal processes such as calcining, sintering, pyrolysis and drying. Rotary kilns are usually made of steel and lined with refractory materials to withstand high temperatures and prevent heat loss.

The basic structure of a rotary kiln consists of the following parts:

1. Rotary kiln shell: The kiln shell is a large cylindrical steel structure that is supported by rollers and rotates around its axis. The kiln shell is usually slightly offset from the horizontal plane to facilitate the movement of materials within the kiln.

2. Kiln wheel and rollers: The kiln is supported by a riding ring (tire) that is attached to the kiln shell and rotates on rollers. The rollers provide support so that the kiln can rotate smoothly.

3. Kiln drive system: The kiln is driven by a motor and gear system that provides the torque required for the kiln to rotate. The drive system is usually located at one end of the kiln and is connected to the kiln shell by a waist gear.

4. Kiln support structure: The kiln is supported on piers or concrete foundations to provide stability and support the weight of the kiln and its contents.

5. Refractory Lining: The interior of the kiln is lined with refractory materials to protect the steel shell from high temperatures and chemical reactions. Refractory linings also help retain heat and improve energy efficiency.

6. Burner System: The burner system is used to introduce fuel and air into the kiln for combustion. The type of burner system depends on the specific process requirements of the kiln.

7. Inlet and outlet: The incineration kiln is equipped with inlets and outlets to feed materials into and out of the incineration kiln. The inlet is usually located at the feed end of the kiln, while the outlet is located at the discharge end.

8. Kiln Seals: Kiln seals are used to prevent heat loss and gas leakage from the kiln. There are many types of seals, including mechanical seals, labyrinth seals, and inflatable seals.

Overall, the structure of the rotary kiln is designed to provide a stable and efficient environment for the thermal processing of materials. The various components work together to ensure that the rotary kiln operates smoothly and successfully completes the required process.

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Working Principle of Rotary Kiln

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Working Principle of Rotary Kiln

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Henan Dingxin Equipment Technology Co., Ltd. (formerly Zhengzhou Yongxin Heavy Industry) is located in Gaoshan Town, Xingyang City, Zhengzhou City. It has focused on the research and development and manufacturing of rotary kilns for over ten years, mainly providing high-quality and efficient production equipment for the mining, building materials, metallurgy, and environmental protection industries. Main products include rotary kilns, suspension flash calciners, ball mills, dryers, coolers, and lifting and conveying equipment. The company has a 20,000-square-meter modern processing workshop and a technical team with 30 years of industry experience. It has in-depth cooperation with top scientific research institutions such as Professor Li's team at Central South University and Teacher Liu's team at Beijing Research Institute of Iron and Steel, achieving a number of patented technological breakthroughs in the fields of tailings resource utilization and iron ore powder calcination. In April 2025, the company completed the construction of a domestically leading pilot test kiln. With "high efficiency and energy saving + intelligent control" as its core, it provides process parameter verification, ratio optimization, and feasibility study services for scientific research units and enterprise customers, guaranteeing customer investment safety from the source and promoting the efficient transformation of technological achievements.