As a key transition point at the kiln head, the kiln hood in the Waelz process is responsible for directing high-temperature slag to the lower cooling system and introducing cooling air into the rotary kiln. At the same time, it plays a crucial role in maintaining the sealing performance and air tightness balance required for stable thermal conditions inside the kiln.
Working Conditions and Challenges
The operating conditions in this area are extremely harsh. The lining is directly exposed to high temperatures of about 800–1000°C inside the kiln, while also being frequently impacted by external cold air due to forced air injection, resulting in continuous thermal shock (repeated heating and cooling).
In addition, due to the irregular geometry and large-span roof structure of the hood, the lining must withstand complex structural stresses caused by its own weight and thermal expansion during high-temperature operation.
At the same time, when the slag leaves the kiln outlet, the strong gravitational impact and mechanical friction generate intense physical impact and high-temperature erosion on the refractory materials of the lower wear-resistant pedestal.
JHYRef Achievements
75+
Kiln lining projects
20+
Key customers
10+
Years of industry experience
1-5m
Kiln diameter
Contact us for detailed configuration and technical specifications.