How to control vertical roller mill temp?

Vertical mill in the grinding process, especially when the equipment is stopped, can cause a great temperature difference on the grinding equipment, resulting in significant thermal stress and thermal deformation, and sometimes damage equipment, such as the liner The geometric deformation, lining bolt breakage and so on. When restarting the equipment, the thermal deformation will produce some cohesive force to form the current pulsation during operation and its own vibration. Therefore, vertical mill power is passed to the main bearing, raising the temperature of the main bearing, so we need to pay attention to the usual maintenance.