Trapezium Mill

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Trapezium Mill operation precautions

The Trapezium Mill handles an important member of the slag equipment. The emergence of the Trapezium Mill turns the slag into a treasure, improves the environment and saves resources, and is a major contributor to modern environmental protection equipment. So what do we need to pay attention to when operating the Trapezium Mill?

First, a stable layer

The Trapezium Mill is ground with a bed, so a stable layer is critical to the safe operation of the Trapezium Mill. Under normal conditions, the thickness of the upper layer of the grinding disc is about 30-60 mm. At this time, the mill runs smoothly, the grinding sound is soft, and the amount of circulating materials inside and outside the mill remains basically unchanged. The material layer is too thin, the mill vibration is large; the material layer is too thick, the mill load is large and the grinding efficiency is low, and severe vibration is also caused in severe cases.

Second, the balance of materials

In the operation of the Trapezium Mill, the feed amount, grinding capacity, air flow capacity, slagging amount or external circulation should be in equilibrium. In the case of a certain amount of feed, if the grinding capacity is insufficient, a large amount of slag will be caused, and more slag is discharged. At this time, the working pressure of the hydraulic station should be appropriately increased (adjust the relief pressure of the relief valve) In order to enhance the grinding ability or reduce the feeding amount properly; if the grinding ability is too strong, the material layer will gradually thin and eventually cause the mill to vibrate. At this time, the working pressure of the hydraulic station or the feeding amount should be appropriately lowered. In another case, if the grinding ability is appropriate and the airflow conveying capacity is insufficient, the same amount may cause a large amount of slag, wherein the fine powder content is large, and at this time, the air volume should be increased and the conveying capacity should be enhanced. Therefore, in the operation process of the Trapezium Mill, the material balance principle is used to pre-discover the problems in the operation of the Trapezium Mill, and corresponding measures are taken to prevent unnecessary shutdown and debugging failure.

Third, the appropriate wind temperature and air volume

Trapezium Mills generally use negative pressure operation, and a large amount of hot air is required for material transportation, grading and drying. The air volume should first meet the requirements of conveying materials. If the air volume is too small, a large amount of qualified fine powder can not be transported out in time; excessive air volume not only causes energy waste, but also causes the product to run rough. The temperature of the wind should be determined according to the moisture content of the material being ground. If the water is too large, the wind temperature should be increased. If the water is small, the air temperature should be lowered, but the inlet air temperature should be less than 350 °C. (Excessive air temperature will cause damage to the Trapezium Mill.) In addition, in order to prevent dew condensation of the mill bag filter, the wind temperature should be controlled within the range of 80-100 °C.

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