The advantages of non-metallic mineral powder processing industry are many kinds of minerals and products. At present, there are more than 40 kinds of non-metallic minerals that need to be crushed and processed, and the ore properties are different, including low hardness ores such as talc and gypsum, and high hardness ores such as quartz and zircon. The crushing and grinding equipment used in non-metallic mineral processing mainly includes jaw crusher, impact crusher, cone crusher and vertical mill.
The structure of vertical mill is composed of transmission system, grinding system and body. The transmission system generally adopts low-speed motor to directly decelerate with belt pulley, and the transmission is stable and reliable. As there are many application fields involved, the requirements for product granularity are different. Therefore, the product variety ranges from coarse sand or coarse grinding to fine sand or fine grinding, and the fineness is between 10 μm and 100 μm.
The grinding system is composed of a grinding roller device, a wear-resistant lining plate and a positioning device. The grinding roller device is connected with the main shaft through a faceplate and a pin shaft. Through the positioning device, a certain adjustable gap is maintained between the grinding roller and the wear-resistant lining plate. The wear-resistant lining plate of the vertical mill is installed on the fixed and non rotating machine base, and the rotation speed will not affect the blanking. The rolling force comes from the resultant force formed by the superposition of the centrifugal force generated by rotation and the spring force. The grinding force can be easily adjusted by changing the rotation speed or adjusting the spring force.
The material feed rate, material layer thickness and product particle composition can be controlled by factors such as the angle of the inner wall of the wear-resistant liner, the gap between the grinding roller and the wear-resistant liner, and the material speed.The vertical mill of SMMVIK Machinery is mainly used for ultra-fine crushing of various non-metallic mine raw materials such as loose iron ore, sandstone, gypsum, blast furnace slag, coal gangue, lump coal and other medium and hard ores, It is the preferred equipment for cement plants, mines, power plants and other enterprises.
