Tongli rotary kiln spring plate Introduction

A rotary kiln spring plate, also known as a spring plate or spring seat, is an integral part of the transmission system that holds the kiln's rotating structure in place. In a rotary kiln, the kiln shell is supported by a variety of components, including rotary kiln support rollers, rotary kiln tyres (riding ring), and spring plates. The spring plates are usually mounted around the circumference of the kiln's shell and provide support to the kiln by exerting pressure against the rotary kiln support rollers and tires. This helps maintain proper alignment and prevents excessive movement or vibration of the kiln. The spring plates are designed to distribute the load and forces generated by the weight of the kiln and the materials being processed within it. They are often equipped with mechanisms to adjust the pressure they apply on the kiln shell, allowing for fine-tuning of the kiln's alignment. These adjustments are crucial for ensuring the efficient and safe operation of the rotary kiln, as misalignment can lead to uneven wear, increased energy consumption, and potential mechanical failures. Tongli, as a professional rotary kiln parts factory, provides various types of rotary kiln spring plate with different specifications and materials. We have specialized equipment that is only used to manufacturer rotary kiln, for example we have a 6.5x6.5x20m annealing furnace and also 6.5x6.5x20m sandblasting room that we are able to do the annealing of the rotary kiln by whole and the sandblasting as well. We have integrated the cutting-edge technology into our equipment design.

Tongli rotary kiln structure

A rotary kiln is a large cylindrical vessel used for a variety of processes, such as drying, calcination, and chemical reactions. It's commonly used in industries like cement production, lime manufacturing, and more.

Shell: The main cylindrical body of the rotary kiln is called the shell. It is typically made of steel and lined with refractory materials to withstand high temperatures and chemical reactions. The shell is inclined slightly from the horizontal and rotates on its axis.

Riding Rings and Rollers: The shell is supported by a set of riding rings and rollers. The riding rings are large rings that encircle the shell at various intervals along its length. The rollers, placed between the riding rings, support the weight of the kiln and allow it to rotate smoothly.

Tyres (Tires): Tyres are large, circular steel components that are attached to the shell. They usually have a conical shape to provide support and help distribute the load evenly. Tyres are sometimes fitted with riding pads to further reduce friction and wear.

Girth Gear: The girth gear is a large ring gear that is attached to the shell and meshes with a pinion gear. This arrangement drives the rotation of the kiln. The girth gear is often supported by trunnion rollers to maintain proper alignment.

Pinion Gear: The pinion gear is a smaller gear that meshes with the girth gear. It is usually driven by a motor through a gearbox, which imparts the rotational motion to the kiln.

Rotary kiln thrust roller：The thrust roller is a critical part of the rotary kiln system. It serves the purpose of supporting the kiln's weight and maintaining its axial position, ensuring that the kiln remains properly aligned along its axis. The thrust roller is typically positioned on the downhill side of the kiln and is attached to the kiln shell. It consists of a central shaft or journal and a roller assembly.

Supporting Rollers: Supporting rollers are additional rollers placed along the length of the kiln to help prevent excessive deflection of the shell due to thermal expansion and other forces. They play a crucial role in maintaining the kiln's stability and alignment.

Refractory Lining: The interior of the kiln is lined with refractory materials to protect the shell from the high temperatures and chemical reactions occurring inside. Different sections of the kiln might have different types of refractories to withstand varying conditions.

Design principles of cement rotary kiln spring plate

Material Selection: The rotary kiln spring plate is typically made from steel or other materials with suitable strength and durability. Carbon steel, stainless steel, and high-strength alloy steels are common choices due to their ability to withstand the mechanical stresses and abrasive forces generated during grinding.

Forming: The spring plate is usually fabricated from flat steel plates. The plates are cut, bent, and welded to form the cylindrical shape of the rotary kiln spring plate. The size and thickness of the plates depend on the specifications of the rotary kiln and the materials being processed.

Welding: The steel plates are welded together to create a seamless cylindrical spring plate. Welding processes such as submerged arc welding or gas metal arc welding are commonly used to ensure the integrity and strength of the welds.

Inspection and Quality Control: Throughout the manufacturing process, inspections and quality control checks are performed to ensure the accuracy of measurements, the integrity of welds, and the overall quality of the spring plate. Non-destructive testing methods such as ultrasonic testing or magnetic particle testing might be used to detect any defects or irregularities.

Surface Treatment: After the rotary kiln spring plate is fabricated and welded, it undergoes surface treatment to enhance its corrosion resistance and durability. This may involve processes such as shot blasting, sandblasting, or applying protective coatings to prevent rust and wear.

Final Machining: Depending on the specific requirements of the rotary kiln spring plate, the spring plate might undergo final machining processes to achieve precise dimensions and tolerances. Machining ensures that the flanges, trunnion seats, and other critical areas are accurately shaped and aligned.

Transportation and Installation: Once the rotary kiln spring plate is manufactured, it is transported to the site where it will be installed. Proper handling and transportation are essential to prevent damage to the spring plate during transit. During installation, the spring plate is carefully aligned and connected to the mill's drive system and other components.

Specifications of cement rotary kiln spring plate

Note: *The diameter is the inner diameter, Weight excludes refractory material.

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Industry Knowledge extension

What is the step Prior to the rotary kiln calcination?

The first step of making cement is the raw material crushing, conveying and storage. The limestone raw material from the mine needs to be crushed, ground and mixed, and the crushing process is carried out by cement crusher. When the maximum size of the input ore is ≤1600mm and the output particle size is ≤80mm, the limestone discharged from the crusher is then sent to the Φ80m circular pre-homogenization yard by the belt conveyor for pre-homogenization and storage.

What is the relationship between vertical roller mill and rotary kiln?

The rotary kiln is usually used as an intermediate process. The large raw materials are crushed by the crusher and then enter the grinding equipment for grinding. After being mixed with other raw materials, they are added to the rotary kiln for redox reactions. The calcined finished products need to enter the vertical roller mill or ball mill for secondary grinding to get the finished product.