Eccentric 360-degree magnetic system non-belt automatic ore discharge permanent magnet drum type magnetic separator

Abstract

The invention relates to an eccentric 360-degree magnetic system non-belt automatic ore discharge permanent magnet drum type magnetic separator. The output end of a speed reducing motor is connected with one end of a center shaft of an inner cylinder; the inner cylinder coats the external of the center shaft of the inner cylinder; a magnetic system with the magnetic wrap angle of 360 degrees is arranged at the periphery of the inner cylinder; a separating cylinder coats the 360-degree magnetic system; the two ends of the separating cylinder are fixedly connected with hollow shafts of the separating cylinder; the two ends of the center shaft of the inner cylinder respectively penetrate through the hollow shafts of the separating cylinder, and are fixed by a bearing base through the center shaft of the inner cylinder; the axis of the separating cylinder is eccentrically arranged from the axis of the inner cylinder; an ore discharge cylinder is arranged outside the separating cylinder; and a small wrap angle magnetic system is mounted on the upper surface of the periphery of a fixed cylinder. Magnetic ores are magnetically overturned and magnetically mixed for many times in separation to realize high-efficiency separation of the magnetic ores from nonmagnetic (weak magnetic) ores; and when the magnetic separator adopts the 360-degree magnetic system, the vortex heating problem and the ore discharge difficulty generated by the separating cylinder are solved.

Description

technical field [0001] The invention relates to the technical field of mining equipment, in particular to a 360-degree magnetic system automatic unloading permanent magnet drum magnetic separator. Background technique [0002] In industries such as ferrous metal mines, conventional magnetic separators are commonly used to remove non-(weak) magnetic minerals from magnetic minerals. The magnetic system wrap angle of conventional magnetic separator is generally about 150°, the magnetic system is fixed, the material of the separation cylinder is metal material, the separation cylinder is rotating, and there is a belt on the separation cylinder to unload ore. Mine can be unloaded without a belt. [0003] However, the separation effect of conventional magnetic separators is not very good, because after the minerals are crushed or ground, the particle size of the minerals is usually uneven and the particle size distribution is wide. Particles and non-(weak) magnetic mineral parti...

AI Technical Summary

Problems solved by technology

However, the 360-degree magnetic system magnetic separator must use belt unloading or magnetic induction unloading. When using belt unloading, it uses the outer side of the belt to unload the ore. It is easy to enter the magnetic mineral between the inner side of the belt and the separation cylinder and cannot be unloaded. The accumulation will affect the sorting effect, and it will also cause rapid wear of the sorting cylinder and belt, resulting in abnormal production

When using magnetic induction to unload ore, the amount of unloaded ore is small, the unloaded ore is not clean and thorough, and the processing capacity and sorting effect are relatively poor.

In addition, since the material of the sorting cylinder is metal and the magnetic system is 360 degrees, eddy currents will be generated in the 360-degree direction of the sorting cylinder, and there is no angle and room for heat dissipation, so the temperature of the sorting cylinder is higher than that of dry separation. will become higher and higher, causing magnet demagnetization and equipment damage

Due to this reason, conventional magnetic separators cannot operate normally and stably after adopting a 360-degree magnetic system.

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