An emergency shutdown refers to a stoppage caused by a malfunction in the lubrication system, power supply system, or the equipment itself, which cannot be resolved under operating conditions and necessitates immediate cessation of operation. An emergency shutdown is permitted under any of the following circumstances:
(1) Collision between the feeder and the hopper, resulting in a loud noise or detachment of the scoop head.
(2) Broken bolts on the grinding mill liner, causing the liner to detach.
(3) Gear grinding, producing a loud, periodic noise.
(4) Abnormal lubrication system. For example, sudden oil cut-off, but the bearings are not overheated; low oil levels with no identifiable cause.
(5) Broken anchor bolts, causing excessive vibration in the grinding mill.
(6) Rapid temperature rise in the motor, reducer, or bearings, exceeding 80℃.
(7) Sparks, smoke, or abnormal noises from the motor or electrical components that persist for an extended period.
(8) Broken main shaft of the spiral classifier, or the main shaft not rotating.
(9) A malfunction in the power supply system that cannot be resolved while the power is on. After an accident and shutdown, immediately stop feeding ore and water, stop the classifier, lift the screw conveyor, and turn all electrical switches to the stop position.