Bluestone Powder Vertical Mill

Bluestone Powder Vertical Mill

The height of the ring gauge directly affects the stability and efficiency of the abrasive material layer. The high height of the ring gauge is not conducive to the overflow of the material grinder, resulting in thickening of the bed. The high loop is too low and the powder spills faster, causing the bed to be too thin and causing the roller mill to fail to pressurize or cause vibration. According to the experience of debugging, in order to ensure the effectiveness of grinding, the grinding materials need to stay in the bluestone powder vertical mill, the altimeter ring is generally set at 30~50mm.

Roller and disc wear

According to the project situation of green stone standing mill, after a long time of operation, the capacity of grinding mill will decline to some extent, mainly due to the wear caused by the disc and roller, which leads to the grinding area of the disc structure roller, and the polishing pressure has been changed. In the first stage, the coarse grinding roller tray: due to the effect of centrifugal force, the material falls into the center of the disk, bites the lower edge of the roller and completes further crushing and rough grinding. In the second stage, compaction: the material that is coarsely ground due to centrifugal force continues to move to the outer edge of the disk and compacts gradually; The third stage, fine grinding area: this area is the minimum roll disk space. The compacted material layer finishes fine grinding under high pressure.

After the gap of three-stage roller cushion increases, the lack of effective new material enters the grinding and rough grinding, fine grinding and compaction areas of the mill. The high pressure grinding roller cannot be completely transferred to the material layer, and it is difficult to produce enough fine powder when the efficiency of grinding is not achieved. The wear and wear of the roller is strictly required for color forming, and the decrease of productivity is more easily reflected. At this point, the surface treatment of the drum sleeve should be adjusted, the surfacing should be re-welded (applicable to the surfacing drum sleeve), or the drum sleeve and the disc sleeve should be replaced (the capacity reduction should exceed 10% of the above measures). Experienced and careful bluestone powder vertical mill operators, skilled coordination of various process parameters, is the key to the stable operation of the mill rack. The bluestone powder vertical mill with optimized operation in the non-metal mineral powder industry shows its dual characteristics of fine production and processing, and gradually ADAPTS to the future development trend of the non-metal mineral powder field. Its excellent performance leads to the upgrading of vehicle body processing equipment with powder technology, which will help to improve the value of non-metal mineral powder economic level.

Reforming the green stone grinding system

The transformation of bluestone powder vertical mill shall include: adopting pre-homogenization of raw materials warehouse, raw materials warehouse and feed belt system (save equipment investment of about 5 million yuan separately); The original cyclone dust collector and circulating fan were removed, and the new high concentration circulating air box pulsed dust collector and fan were removed. The original raw silo ore to the finished product, including the new pneumatic conveying equipment in its storehouse, and the finished product ore is delivered to the ore powder distribution storehouse. Two other new clinker and slag powder metering devices in the bin at the end of the slag component are mixed proportionally to form the final product. Production technology of modified slag grinding system is: the composition of slag from the vertical grinding machine drying, grinding and separation, the separation of coarse powder returned to mill, high concentration powder into the air in the bag filter, dust acceptance (completed)) through air chute, elevator and other slag powder transportation in the reservoir of the finished product homogenization silo before (). The improvement of green stone vertical grinding project mainly focuses on transforming raw material vertical grinding into slag vertical grinding.

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