Five requirements for the control system of the water ball mill
The slag is a process of rapidly cooling the blast furnace slag in a hot melt state in water, and mainly has two methods of water quenching in the slag pool or water quenching in the furnace. Water slag is used as building material for the production of cement and concrete. Because slag has potential hydraulic gelling performance, it can be used as high-quality cement raw material under the action of cement, lime, gypsum and other activators. Acid cement, gypsum slag cement, lime slag cement, slag brick, slag concrete, etc.
The slag ball mill adopts the grinding head blast to receive the good effect of increasing the output and reducing the power consumption of the cement ball mill, and creating favorable conditions for the ball mill with higher moisture content to increase the output and reduce the power consumption. If hot air of 70-80 ° C is blown from the grinding head, good results will be obtained.
The water slag ball mill adopts the grinding head to blow the air, which can increase the ventilation amount inside the grinding machine, and timely release the water vapor in the grinding machine to reduce the adhesion of the wet fine powder to the surface of the steel ball, the lining plate and the partition board, and eliminate or reduce "Saturated" phenomenon. In addition, the use of the blasting of the grinding head, the wind pressure in the grinding, especially the high wind pressure of a warehouse, so that the material is ground to a certain extent, and the suspension is suspended or semi-suspended in the warehouse to make the movement faster, thereby reducing the over-grinding phenomenon.
Control requirements for the water ball mill control system:
1. The logical relationship between the parameters of the milling control. The logical relationship between the main parameters of the control system is only the theoretical assumptions put forward by the experience of other manufacturers before the implementation of the control system. In the implementation process, the actual experience of the operators should be continuously combined to improve and improve until the control effect Only when the practical stage is reached can it be determined.
2. The ball mill can be equipped with a suction and dust removal system. At the same time, the sealing of the rotary screen, the ventilation duct, the ash pipe under the dust collector, etc. is strengthened.
3. Install 2-3 windshields in the cutting tube to prevent airflow from being sprayed from the feeding port. In addition, a dust hood is placed above the feed port. The outlet of the suction hood is connected to the air inlet of the ball mill grinding head fan, so that if there is airflow overflowing from the feeding port, it can still be returned to the grinding through the dust hood.
4. Quantitative and blanking control of water slag ball mill. According to the actual load of the ball mill, the PLC compares the given amount set by the operator, and changes the rotation speed of the disc feeder through the inverter to adjust the amount of the feed, so that the amount of the feed is stable at a given amount, and finally The ball mill works stably and the grinding quality meets the requirements.
5. Air volume control of water slag ball mill. The automatic control of the air volume of the ball mill is based on the air volume of the dust collector, the cyclone separator, the air blower, the particle size of the ball mill, and the size of the material to be discharged.
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