News Date:2018-01-15
slag vertical mill is a grinding and drying equipment, out of grinding gas temperature is a measure of the drying operation is a comprehensive indicator of normal. In order to ensure good drying of raw materials, the vertical mill material moisture less than 1.0%, if the mill gas temperature is too low, indicating lack of drying capacity, product moisture, not only has an impact on the bag filter, and may lead to slag mill is not fine , The system reduces grinding efficiency ,. When out of gas temperature is too high, the material is quickly dried, but will make roller, disc reducer bearing temperature, shorten the life of the equipment. Through continuous refinement in production and improvement, and gradually summed up: vertical mill outlet gas temperature control at 95 ~ 105 ℃ appropriate.
In addition, out of grinding gas temperature changes, feeding volume is not easy to control. As the slag moisture has a certain fluctuation, resulting in the imbalance of heat consumption, the visual performance of the vertical mill outlet rapid temperature changes. Especially when the slag moisture is more than 8%, the outlet temperature drops sharply to below 90 ℃. If the parameters can not be adjusted in time, it will cause the material interlocking to stop and stop due to the low temperature. Therefore, the stability of the slag moisture is the key, we take measures are: First, adequate storage of slag, control of water ≤ 8%; Second, adjust the stove temperature and the air valve with the opening of the mill temperature control 100 ℃ ~ 105 ℃. The latter not only solves the problem of large temperature changes caused by slag moisture, but also solves the problem of adjustment speed and effect of adjustment. At the same time, due to sufficient heat supply, adequate drying, and an increase of the feed gas ratio, the output of Taiwan production is greatly increased. It should be noted that: stop ingredients, the temperature rise is not conducive to the safe use of dust filter bag, to be timely cooling.
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