Improvement of dust collection and air inlet settings of potassium feldspar Raymond mill

Improvement of dust collection and air inlet settings of potassium feldspar Raymond mill> Let’s talk about the dust collection system first. According to the change of product fineness, a small diameter and small taper multi-cylinder combined cyclone dust collector is used to replace the original Raymond mill system. Large-diameter, large-taper single-cylinder cyclone dust collector. To improve the fine powder dust collection efficiency, the diameter of the cyclone must be reduced. However, its processing capacity will also decrease. Therefore, a multi-cylinder combined cyclone dust collector should be used to meet the collection requirements. powder ability. At present, most domestic Raymond mill production lines use pulse dust collectors to improve production efficiency. Improve dust collection efficiency and reduce resistance to reduce pressure loss.
> Let’s talk about the air inlet system. To obtain good grading effect, in addition to the reasonable structural parameters of the classifier itself, it also depends on the air volume and air pressure passing through the classifier. The air blast volume of ordinary Raymond mill matches the index of powder production. Its rated air blast volume is large and the wind pressure is small. It can be seen from the air separation principle of the impeller classifier that the classification particle size is proportional to the square root of the air volume. To obtain a small classification particle size, the air volume passing through the classification wheel must be reduced. Therefore, under the premise of ensuring the material delivery volume, the rated air volume of the blower should be greatly reduced, and the air pressure should be greatly increased to overcome the increased resistance after the introduction of a high-speed centrifugal impeller classifier.
> Specific measures to improve the air inlet system are that the layout of the air supply ducts must be short and smooth, avoid straight bends, and absolutely avoid horizontal layout of the ducts, because straight bends will increase the resistance of the air duct. At the same time, straight curved and horizontal pipes are easy to deposit dust, which will cause pollution to the finished product. Use a blower with high air pressure and small air volume. The air volume is nearly half less than that of ordinary Raymond mill, and the air pressure is more than twice as high. The selection of this parameter is not only beneficial to the transportation and classification of high-mesh ultra-fine powder. When the air volume is reduced by half, the output not only does not decrease, but increases, and the large particles in the powder are significantly reduced.
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