Rotary kilns, dryers, calciners, coolers, and other similar equipment are often erected in locations exposed to ambient weather conditions and harsh process environments. Despite the fact that these machines are huge, the drives and support assemblies are precisely machined parts. The design geometry of each component interacts specifically with its counterpart, so that the massive gravitational thrust forces developed by the weight of the kiln and its sloped design can be neutralized effectively by adjusting the position of the support rollers with respect to the riding rings.
When these shapes are new and well-defined, a few thousandths of an inch one way or the other can make the entire kiln move uphill or downhill very quickly. However, when these surfaces begin to wear and the relationships between components begin to change, the movements required to adjust the position of the kiln become unpredictable and inconsistent. When this occurs, monitoring kiln position and making support roller skew adjustments can easily become a full time occupation for one or more maintenance personnel.
In many cases, the damage can be repaired in place with the machine online. Our Tire and Roller Reconditioning (TaRR) capabilities will extend the life of affected components without the need to shutdown. Both machine tool and belt grinder equipment is available, depending on the specific application. However, there are circumstances under which online machining of support components can exacerbate the damage and may be ill advised. Through our other Smart Services, like
Kiln Alignment Surveys and
Kiln Load Analysis, we will help you determine the cause of the damage, recommend a solution, and provide the parts and services required to complete the repairs. Once the problem is remedied, TaRR services may be employed to return the rolling components to the correct geometry.
For more information contact your local FLSmidth Minerals representative or use the Contact Us tab on the home page