LM Vertical Grinding Mill

A&C LM Vertical Grinding Mill, also called vertical roller mill, is developed and designed by A&C. it sets medium crushing, drying, grinding, classifying and other functions into a whole, being the ideal equipment for grinding various kinds of materials.

Main Structure Of A&C LM Mill

The LM Vertical Grinding Mill mainly consists of powder concentrator, shell, disc assembly, roller assembly, driving arm, driving system and hydraulic plant and lubrication system etc.


There are mainly three types in this series grinding mill: the K series, the M series and the N series. Each type is suitable for different materials. The K series vertical grinding mill is frequently used for grinding metallic and non-metallic ores; the M series vertical grinding mill normally used for grinding coal while the N series vertical grinding mill for materials that are different to be ground. The engineer will recommend the most suitable model for the customers according to their situations.

Working Principle

The motor drives the grinding disc to rotate through decelerator. The material falls on the center of the disc from the feeding opening, at the same time the hot air enter the mill from the air inlet. With the rotation of the grinding disc, due to the centrifugal force, materials move to the edge of the grinding disc. The materials are ground by the force of the roller when passing by the groove on the grinding disc. The ground materials are brought up by high-speed airflow, the larger particles fall down to the grinding disc for secondary grinding. When the ground materials in the airflow pass the separator on the top of the mill, the coarse powder falls down to the grinding disc for regrinding while the powder with required sizes comes out with the airflow and will be collected by the dust collector.

The materials content moisture will be dried when they are mixed with the airflow. By adjusting the temperature of the hot airflow, the material can reach different requirements and also by adjusting the separator, the material can be ground into proper fineness.

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