What is a vertical roller mill used for?

date:2023-09-15

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In the construction and cement industries, a vertical roller mill is an essential heavy machinery that plays a significant role, particularly in the cement industry. The selection and use of vertical roller mills are challenging tasks due to their importance and powerful functionality. They are extensively used in various industries and hold an indispensable position.


Application of Vertical Roller Mill


Vertical roller mills are widely used in multiple industries, including the cement and mining industries. They offer several advantages and are employed for rapid grinding of various minerals, ores, and cement clinker, resulting in the production of fine particles.


Application in the Cement Industry


In the cement industry, vertical roller mills are primarily used for grinding raw materials and cement clinker. Compared to traditional ball mills, they operate with higher grinding efficiency, reducing energy consumption while producing finer particles. The vertical arrangement of the mill, with grinding rollers mounted on a rotating grinding table, enhances grinding efficiency and optimizes the utilization of available space.


Application in the Mining Industry


Vertical roller mills are employed for grinding coal, ores, and other materials. They are particularly suitable for grinding hard materials such as iron ore and copper ore. These mills can process materials with high moisture content and are suitable for the drying and grinding of raw materials.

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Working Process and Flow of Vertical Roller Mills


The grinding process of vertical roller mills is complex, and each step is crucial. Neglecting any step in the process may hinder the proper functioning of the mill. The working process of a vertical roller mill can be divided into three stages: drying, grinding, and separation.


Initially, the raw materials to be ground are fed into the mill through a feed chute. They are then conveyed to the grinding table by centrifugal force generated by the rotation of the table. The grinding between the rollers and the table generates heat, causing the moisture in the materials to evaporate and achieve the drying effect.


Once the raw materials are dried, the grinding process can begin. Grinding takes place between the rollers and the table, with the grinding force generated by the rollers transferred to the materials. The grinding process generates a significant amount of heat, so water is sprayed onto the grinding table to cool it and prevent material overheating.


During the grinding process, the materials are separated from the grinding table and transported out of the mill by the airflow generated by the mill's fan. The separated materials are then collected in bag filters or cyclone separators, while the purified airflow is released into the atmosphere through the filtering device.

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In summary

Vertical roller mills are essential heavy machinery in the construction and cement industries. They are used for grinding raw materials and cement clinker, offering high efficiency and energy savings. In the cement industry, they enable the production of finer particles and reduce energy consumption compared to traditional ball mills. In the mining industry, they are used for grinding hard materials such as iron ore and copper ore. The working process of a vertical roller mill involves drying, grinding, and separation stages, ensuring effective material processing. For high-quality vertical roller mills, you can choose our product at Tongli Machinery.