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Performance characteristics of iron ore ultra-fine vertical grinding mill

October 14, 2019 by xiaoxuanxuan  

1. The iron ore vertical roller mill is highly efficient. In the case of the fineness of the feldspar powder and the same motor power, the output of the feldspar ultrafine mill is more than double that of the jet mill, the agitator mill and the ball mill. 2. The wearing parts of the wearing parts have a long service life, and the grinding rolls and grinding rings are forged by special materials, so that the durability is greatly improved. In the case of the same fineness of materials and finished products, the wearable parts of the feldspar ultra-fine mill are 2-3 times longer than the wear parts of the impact crusher and the turbine pulverizer, generally up to one year; This mill has a service life of 2-5 years when processing calcium carbonate and calcite. 3. The iron ore vertical mill has high safety and reliability. Because there are no rolling bearings and screws in the grinding chamber, there is no problem of the bearing and its seal being vulnerable, or the problem of destroying the machine due to loose screws. The iron ore enters the feeding bin through the grab machine, and is sent to the roll vertical roller mill by the conveyor belt after being metered. The material in the mill moves from the center to the edge under the centrifugal force by the rotation of the grinding disc. After the compaction, degassing and grinding process, the iron ore material is brought up by the hot air entering from the wind ring at the edge of the grinding disc, and is instantly dried. The finer particles are taken to the classifier for sorting, and the coarse powder is returned. Grinding disc and then grinding. The qualified fine powder is taken into the bag filter to separate the gas powder after the finished product is collected. After the finished product is collected, it is transported into the finished bulk warehouse, and the exhaust gas is discharged after being silenced by the fan. Part of the hard-to-wear large-grain material (and iron tumor and iron slag) enters the external circulation system through the slag discharge port at the wind ring, and is again fed by the hoist into the grinding mill after iron removal. The hot air required for the drying and ventilation of the mill is supplied by the hot blast stove, and the insufficient portion is replenished from the atmosphere by the cold damper. The system has a large air volume and a strong drying capacity, and the moisture content of the material can reach 8-15%.