High gradient strong magnetic field horizontal magnetization roller

Abstract

The invention relates to a high-gradient high-magnetic-field horizontal magnetic roller. The magnetic roller comprises a magnetic roller mandrel, one or more first excitation iron sleeves and second excitation iron sleeves are coaxially sleeved on the magnetic roller mandrel and axially connected sequentially and alternately, a protruding shaft is arranged at the end of each second excitation iron sleeve and inserted into a cavity of each first excitation iron sleeve, cycles of exaction fins which are arranged axially are arranged on the outer wall surfaces of the first and second excitation iron sleeves, a U-shaped clamping falcon is formed between two adjacent excitation fins and provided with a permanent magnetic stripe, the amount of the excitation fins is equal to that of the permanent magnetic stripes and is an even number, polarities of two adjacent permanent magnetic stripes are opposite, outer surfaces far away from axes on the permanent magnetic stripes flush with the outer surfaces far away from axes on the excitation fins, and flanges for packaging and fixing ends of the permanent magnetic stripes are arranged at two ends of each first excitation iron sleeve. According to the magnetic roller, safety and reliability are improved, and the screening efficiency and grade are improved.

Description

technical field [0001] The invention relates to a dry or wet magnetic separator for sorting weakly magnetic metal ore powder or removing impurities and purifying non-metallic ore powder by using a permanent magnet magnetic source, in particular to a high-gradient strong magnetic field horizontal magnetic gathering roller. Background technique [0002] At present, permanent magnet mineral processing equipment has been widely used in mineral metallurgy, chemical industry, environmental protection and other fields due to its advantages of low energy consumption, low cost, convenient operation and wide application range. In the past ten years, with the continuous improvement of rare earth NdFe shed high magnetic energy level materials, many weak magnetic materials have entered the field of magnetic separation. In various dry or wet magnetic separators, the energy level of the magnetic source material of the magnetic series and the high magnetic energy level and high gradient ref...

AI Technical Summary

Problems solved by technology

It will bring many difficulties when the magnetic gathering roller is above Tesla: not only the pressure of the larger magnetic material will be reduced during die-casting, but the density of the magnetic material will be insufficient, which will affect its magnetic energy level; When the diameter exceeds 400mm, the overflowing magnetic force will also decrease significantly, resulting in the inability to increase the magnetic separation capacity synchronously

[0006] In addition, when the circular magnetic pieces or fan-shaped magnetic pieces are combined in the axial direction, the fixation between adjacent magnetic pieces is completely dependent on the organic adhesive material. Under the aging of the adhesive material and strong internal stress, the magnetic pieces are easy to fall off. lead to a significant reduction in its service life

[0007] Moreover, during the bonding process of circular magnetic sheets or fan-shaped magnetic sheets, it is difficult to control due to the large repulsion effect of the magnetic force. When manually operating the magnetic sheet bonding and positioning, in addition to the easy injury of the hand, the surface of each magnetic sheet combination It is also difficult to be smooth, and the outer circle must be finished. However, the magnet material is limited by the Curie temperature, so it cannot be processed quickly. It can only be ground with a large grinding machine. , and the grinding speed is very slow, resulting in low processing efficiency and high production costs

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