Rotary kiln spare parts

Cement rotary kiln plays an important role in cement production process,it is used for the calcination of cement clinker.Cement rotary kiln is mainly composed of kiln body,rotating device,riding wheel,sealing device and other parts.

PRM can produce rotary kiln components including girth gear, rotary kiln tyre, support roller, thrust roller and etc.

rotary kiln

Rotary kiln components are divided into five parts: rotary part, support part, transmission device, sealing part and burner.

Rotary parts includesgirth gear, wheel belt, barrel, wheel belt backing plate, wheel belt joint, kiln door protection plate and blanking pipe.

Supporting part includes riding wheel(support roller), riding wheel shaft, riding wheel bearing seat,support base, thrust roller, thrust roller seat, bobbin tile, top wire, top wire seat and oil level indicator.

Transmission device includes pinion gear, pinion shaft, bearing seat, shaft sleeve, column pin, bolt, movable semi-coupling shaft, fixed semi-coupling shaft and motor wheelset;

The sealing parts include kiln head sealing ring, kiln tail sealing ring, bracket and closing bolt. Burners include single – channel burners, multi – channel burners and pulverized coal burners.

Rotary kiln tyre

rotary kiln tyre
rotary kiln tyre
rotary kiln tyre

Application: Cement, metallurgy, chemical, construction

Material: ZG45、ZG42CrMo

Weight: 5-70Tons

Customizable: Yes, according to drawing

Introduction of rotary kiln tyre

Rotary kiln tyre is also called rolling ring, rotary kiln wheel belt, which is the main part of rotary kiln. The function of tyre is to transfer the whole weight (including firebrick, interior device and material) to riding wheel to make barrel stably move round at riding wheel. Therefore, tyre should have excellent strength and wear resistance; meanwhile, it is the part to enhance radial stiffness of barrel, so it should be with excellent stiffness.

Rotary kiln wheel belt features

1. High strength of tyre and good durability.We produce the rotary kiln belts with material of ZG45 and ZG42CrMO, that can guarantee the strength and toughness of the belts and thus play a supporting role.

2.The wheel belt is treated with advanced double-medium quenching process in the casting process, which is highly adaptable.

3.The rotary kiln tyre has a simple structure, which is easy to manufacture and maintain.

4.Our company can process all kinds of rotary kiln belts according to customers’ drawings. The optimized technology and excellent quality can ensure that the processed rotary kiln belts are well matched with the original rotary kiln equipment.

Support roller and support roller shaft

support roller
support roller
Weight 7-40T
Material ZG55, ZG42CrMo
Application Cement, metallurgy, chemical, construction industries
Customizable Yes, according to customer drawings

Support roller bears the whole weight of rotary kiln (including barrel, inside bricks, heat exchange device inside kiln, raw material, rolling ring, gear ring), it makes the barrel and the girth gear running smoothly on kiln support roller. Therefore, It requires supporting roller with strong endurance.

Usage:To support the rotary kiln body with the roller ring, and also fixed the rotary kiln body from radial and axial direction.

Quantity: The qty of support rollers needed for a rotary kiln depends on how length of the kiln, usually there are 2-9 pairs for a rotary kiln.

Installation position: the installation position of the support roller is corresponding to the position of the rotary kiln tyre.

Thrust roller of rotary kiln

thrust roller

Weight: 2-5T

Material: ZG230-450

Application: Rotary kiln

Customizable: Yes, according to customers drawing

The thrust roller is installed on both sides of rotary kiln tyre which near the transmission device, it is used to check whether there is longitudinal movement of rotary kiln body.

When rotary kiln is in normal operation, the rolling ring is in the middle of two thrust rollers, there is 30-40mm space between the both sides of the rolling ring and work face of thrust roller, When the rolling ring contacts either side of the thrust roller that it explains the rotary kiln is moving.

Girth gear, Pinion and Pinion shaft

girth gear

Girth gear, pinion and pinion shaft are one of the main components of rotary kiln transmission device. As an important part of rotary kiln, large and small gear transmission device can be well connected and run well between gears, so as to ensure the normal production of the whole rotary kiln.

The large girth gear is one of the most important parts in the transmission of rotary kiln. The installation accuracy of girth gear is effected the equipment smoothness and running efficiency. So the center line of the big gear must coincide with the center line of the cylinder when install. Girth gear is usually made of two halves or several pieces due to its large size, which are connected together by bolts. And girth gear is usually installed near the central part of the kiln cylinder, that makes the cylinder bear even force in operation and stay away from the hot end with less dust.The commonly used materials of big gear are ZG45 and ZG42CrMo, and the hardness reaches HB70-200 after normalizing.

The pinion is adopted with 35SiMn,45MnB,40Cr and other materials, and its hardness must be higher than that of big gear after quenching and tempering treatment and Hardness to be HB220-250.