Device and method for changing movement track of grinding medium of grinding machine based on magnetic field

Abstract

The invention discloses a device and a method for changing a movement track of a grinding medium of a grinding machine based on a magnetic field. The device comprises a base (1), a coil housing (2), a magnet columns (3), coils (4) and a grinding machine barrel body (5), wherein the grinding machine barrel body (5) is mounted in the coil housing (2), and the position of the central axis of the grinding machine barrel body (5) is the same as that of the central axis of the coil housing (2); the grinding machine barrel body (5) can be rotated around the central axis of the coil housing (2); the coil housing (2) is fixedly mounted on the base (1); the magnet columns (3) are uniformly fixed in the coil housing (2) through bolts; the base (1) is fixed to the ground through foundation bolts; the magnet columns (3) are coiled with the coils (4); the magnet columns (3) are arranged in certain angles in a coiling housing barrel body and used for electrifying the coils (4) so as to obtain the magnetic field as requirement. According to the device, the connection of the coils (4) can be changed to obtain the magnetic field in the direction as requirement; the size of the magnetic field can be realized by changing the intensity of current in the coils (4), and thus the movement track of the moving grinding medium in the grinding machine barrel body can be changed.

Description

technical field [0001] The invention relates to a device and method for changing the motion track of a grinding medium of a mill based on a magnetic field, and is especially suitable for test simulation and research on the motion law of the grinding medium in a ball mill. Background technique [0002] The research on the motion characteristics of grinding media is the core of analyzing and optimizing the performance of the mill, which directly affects the particle size distribution, power consumption, wear and steel consumption of the mill products. As the diameter of the ball mill drum continues to increase, it is impossible to effectively test and simulate the internal complex motion process and impact collision process. The most common method is to build a laboratory-scale small mill based on similar theory. At present, domestic research on the motion characteristics of grinding media is mainly focused on discrete element numerical simulation, and the method of using labo...

AI Technical Summary

Problems solved by technology

However, in order to change the movement law of the mill medium, the most common method is to change the mill operating parameters and the cross-sectional shape of the liner, which requires a large test cost and a large number of tests, and the processing of the liner with an irregular cross-section is particularly complicated

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