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Five Classification Methods of Ultrafine Mill
Richarder
#1 Послато : Wednesday, March 14, 2018 10:39:20 AM
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Ball grinding mill is one of the important machines widely used in such industrial departments as ore beneficiation, building material, cement, coal, power and metallurgy. It has simple and firm structure, reliable operation and strong adaptability to the materials and is able to continuously run for long time, so that it is able to satisfy the needs of modern large-scale industrial production. As ultrafine mills are various in types, it is advisable for the customers to know the types of grinding mills and their advantages and disadvantages to choose the most suitable type.
There are five classification methods for ultrafine mill; here Zenith Machinery will give a detailed introduction:
(1) Classification based on the shape of the grinding media
According to the shape of the grinding media, grinding mills can be divided into ultrafine mill, rod mill, rod and ultrafine mill and gravel mill. The grinding media of ultrafine mill are mainly steel balls or steel rods, and ultrafine mill has the widest application. The grinding media of rod mill are steel bar with the diameter of 50-100mm. Rod ultrafine mill generally has 2-4 grinding cabins, and the first cabin is filled with cylindrical steel bars and the 2-4 cabins are filled with steel balls or steel rods. The grinding media of gravel mill are coble, gravel or porcelain ball, and gravel mill is mainly used for the production of ceramics, colored or white cement.
(2) Classification based on the transmission method
According to the transmission method, ball making equipment can be divided into center drive ultrafine mill and peripheral drive ultrafine mill. The motor of center drive ultrafine mill drives the grinding cylinder to rotate through the reducer to drive the hollow shaft of the discharging end of the grinding mill, and the output shaft of the reduce is in the same straight line with the center line of the grinding mill. The motor of the peripheral drive ultrafine mill drives the grinding cylinder to rotate through the reducer to drive the big gear wheel fixed on the cylinder of the discharging end.
(3)Classification based on the ratio of length and diameter of the cylinder
According to the ratio of length and diameter of the cylinder, ball grinder can be divided into short ultrafine mill machine, medium and long ultrafine mill machine and long ultrafine mill machine. The draw ratio of short ultrafine mill machine is below 2, and it generally has only one cabin and is mainly used for coarse grinding or first-level grinding; the draw ratio of medium and long ultrafine mill machine is about 3 and that of long ultrafine mill machine is over 4 and it has wide application in cement plant.
(4) Classification based on the discharging method
According to the discharging method, ultrafine mill can be divided into rear dump ultrafine mill and central discharge ultrafine mill. As for the rear dump ultrafine mill, the materials are fed in from end and discharged from one end; as for central discharge ultrafine mill, the materials are fed from the two ends of the grinding mill and discharged from the middle of the cylinder.
(5) Classification based on other methods
According to the technical operation, it can be divided into wet type, dry type, interval and continuous ultrafine mill. Interval ultrafine mill is seldom used and it is usually for the trial grinding in the test cabinet.
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