• Name :Grinding Ball Supplier In South Africa
  • Abstract:Separator blade dropWhen the Ball Grinding Mill grinds the iron ore, the blade of the separator may fall off. If we have a certain understanding of the relevant

Introduction

Application:

Separator blade drop

When the Ball Grinding Mill grinds the iron ore, the blade of the separator may fall off. If we have a certain understanding of the relevant phenomena, we can find and deal with the faults in time, which are mainly caused by the long-term vibration of the Ball Grinding Mill and the loosening of the lock nut fastener.

Cause of blade fall of Ball Grinding Mill separator

1. The common phenomenon is that the Ball Grinding Mill runs for a long time and has a big vibration. The damage to the machine itself caused by vibration is very serious. Once the vibration of the machine body is more obvious, it should be dealt with in time to prevent potential safety hazards and machine failure. The main causes of machine vibration fault are unreasonable system parameters, damage to the equipment body, material properties and so on. It is necessary to find and quickly deal with the source of the fault, so as to avoid the removal of the separator blade of Ball Grinding Mill.

2. Another common reason is that the blade of the separator of the Ball Grinding Mill is fixed on the vertical shaft of the separator by the lock nut. The separator motor drives the vertical shaft to rotate, and the vertical shaft drives the rotating body which is integrated with the separator blade to rotate. In this case, periodically check the rotating body to see if the lock nut is loose, once loose, immediately handle, this detail is always easy to be ignored in the grinding, but the maintenance staff must be careful, not neglected.

How to determine the fall of the separator of the Ball Grinding Mill?

When it is found that the vibration of the Ball Grinding Mill is more and more obvious, the temperature of the outlet material rises, and the pressure difference of the Ball Grinding Mill decreases. At this time, the inner material layer of the Ball Grinding Mill is thin, forcing the operator to substantially feed to ensure the stability of the Ball Grinding Mill. This indicates that the leaves may have fallen off.

Typical case analysis of blade fall of Ball Grinding Mill separator

Typical case 1

Operation condition of Ball Grinding Mill before blade dropping: feed quantity is 147 t/h, fan current is 340 A, fineness of raw material Ball Grinding Mill system is 16.8%, circulating fan current is about 90 A, separator current is 27 A, and the current changes with the speed of separator.

Operation condition of Ball Grinding Mill after blade dropping: feeding capacity as high as 168 t/h, fan current in storage is 389 A, raw meal fineness is 28.9%, circulating fan current is 112 A. The current of the separator changes to 23 A. When the speed of the separator is adjusted, the current of the separator remains unchanged.

According to this phenomenon, the blade of the separator is no longer rotating with the bearing, that is, no load work. If we encounter this kind of situation in operation, we should stop grinding in time to prevent coarse raw meal from entering the raw material bank and affecting the calcination of ore rotary kiln.

Typical case 2

The sound of “ drum ” can be heard near a Ball Grinding Mill because the blades and the rotating bodies hit the triangular frame. Outside the Ball Grinding Mill, some exposed vertical shafts were still rotating, but the actual grinding inspection found that the blades on the rotating body and the rotating body were separated from the vertical shafts and landed on the triangular frame in the Ball Grinding Mill.