Shortcomings of vertical grinding

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kuangshanposui

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Not suitable for Raymond Mill Model hard and abrasive materials, short service life and frequent maintenance. Moreover, its wear parts are more expensive than the ball mill, but compared with the total maintenance of the ball mill, hoist, classifier and other equipment replaced by it, it still appears to be simple, easy to repair and small in workload.
Compared with ball milling, vertical mill has higher energy consumption utilization rate. This is the main reason for the vertical grinding of the grinding system. However, the fineness of the finished product is too uniform, and there is no reasonable particle grading. This is the limitation of vertical grinding application. The main reason for clinker grinding.
In order to ensure the early strength of the concrete, the 0-3 & micro;m particles in the cement particles should reach about 10%, while ensuring the late strength of the concrete, the cement particles of 3-30 & micro; m need more than 70%. Compared with the ball mill, the vertical mill has the same strength in 28 days. Due to the narrow particle grading range, the 3-30µm particles are as high as 82%, and the 0~3µm particles are about 6%, resulting in low early strength and water demand. Large, easy to agglomerate and falsely condensed, and cracked, the workability of concrete does not meet the requirements.
The ball mill has low energy consumption and has a tendency to be replaced by vertical mills and roller presses. However, the ball mill has the unique advantage of “granular shape is similar to spherical shape, which is conducive to raw material calcination and cement hydration hardening”. The main reason for the majority of mills is the use of ball mills.
Posted 21 Aug 2019

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Posted 07 Feb 2020

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