The mill is cylinder rotating device with girth gear and two
chambers. The materials are fed to first chamber through hollow
shaft through feeding device. There is stepped liner or waves
liners and different size of balls inside this chamber. After
finishing in first chamber, the materials will be fed to second
chamber. There is flat liners and balls inside second chamber,
which will grind the materials once again. After grinding, the
powder will be discharged and then finish grinding works.
This ball mill is horizontal shell rotating device, mainly consist
of shell, mill door and liner bolts. So we required to check the
mill when shut down, especially to check the liners on shell and
The liners are used for protect shell in order to avoid damage to
shell, please check liners regularly to avoid any loose because of
Diaphragm is used to separate grinding media to avoid axial
movement of media and large size move to next chamber. It can make
suitable grinding for materials and control filling grade, material
flow, and grinding speed inside mill.
Diaphragm plate is consist of central circle, feed cone, grate
plate, lifting plate, liner, diaphragm support and blind plate.
Please check if there is any loose, missing of bolts, to check the
condition of grate plate and blind plate, if there is any crack or
influence to grate plate and check if there is any movement of
Bearing is used to bear the weight of rotated part also impact of
grinding media. The mill is supported on main bearing by hollow
shaft. There is bearing cover, watch hole, temperature gauge on
Feeding and discharging device
Feeding device is used to feed materials into mill, there is chute
feeding device, screw feeding device and ladle feeding device. The
discharging device is consist of discharging grate plate, guide
cone, lifting plate, discharging cylinder, drive connecting
tube,drum screen, discharging cover, coarse tube etc.
Drive device is consist of speed motor, slow drive motor, slow
reducer and speed reducer. Mainly check: if there is any overheat
and noise of reducer oil pump. And check working condition of each
elements such as pressure gauge, temperature gauge, and if there is
any oil leakage, oil level and oil color of oil tank. Please adjust
oil flow as per weather condition; check if there is any noise of
main oil pump etc.