Mechanical Elements of tubes Mills For Cement industry
Mechanical Elements of tubes Mills For Cement industry
The course include
Introduction -
Nature of wear in ball mills -
Influence on lifetime for wear parts -
A- Influence from material to be ground
B- Influence from lining thickness
C- Influence from lining shapes and surfaces
The mechanical elements of a tube mill can roughly be subdivided into internal and external parts.
The mill internals have a direct function with regard to the grinding process and include principally the wear parts of a mill such as mill liners, diaphragms and grinding media.
The external parts of a standard tube mill consist of mill shell, mill heads, mill bearings, feed and discharge equipment and include also the mill drive.
In the following the external parts of the tube mill are described under special consideration of the process technological aspects. The mill internals are described in separate chapters.
The feed devices have to fulfill the following functions
Continuous flow of material into mill without any blockages.
No back-spillage of material.
No false air intake in case of raw material drying inside the mill.
Free area to permit the intake of cold ventilation air in case of large cement mills.
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