Dry type magnetic roller and magnetic separator
A magnetic separator and dry-type technology, applied in the direction of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems of improving the grade of magnetic separation fine powder and not improving the grade of fine powder, etc., to achieve small wear and reduce energy consumption. The effect of low consumption and low replacement rate
Active Publication Date: 2016-07-27
张进才 +2
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Problems solved by technology
However, the dry-type wind magnetic separator of said patent needs to be improved for refractory ore, fine-grained ore and superfine-grained ore, and the problem that the fine powder grade cannot be raised is high, especially for refractory ore, fine-grained ore, superfine-grained ore For fine-grained ore, the phenomenon of magnetic wrapping in magnetic separation is serious, so that the improvement of the grade of magnetic separation fine powder is limited
Method used
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Embodiment
[0042] Embodiment: As shown in the figure, a dry magnetic roller includes a roller 9, a magnetic system 10 is arranged in the roller 9, a hole 12 is arranged on the peripheral wall of the roller 9, and the roller The pressure in the 9 is greater than the pressure outside the roller 9. Wherein, in order to complete the magnetic separation, the magnetic system 10 must only be distributed on a part of the circumference along the circumferential direction of the magnetic roller 2 . Such as figure 1 As shown, the magnetic system 10 may be a fixed cylindrical shape with only a part of the circumference magnetically charged and a part of the circumference without magnetization. Such as figure 2 As shown, it can also be a magnetic sector with part of the circumference. In this embodiment, the magnetic system 10 used is a fan-shaped magnetic system with a partial circumference.
[0043] In addition, there is a cavity 17 between the magnetic system 10 and the inner wall of the roll...
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Abstract
The invention provides a dry type magnetic roller. The dry type magnetic roller comprises a roller, wherein a magnetic system is arranged in the roller. The dry type magnetic roller is characterized in that holes are formed in the circumferential wall of the roller, and pressure in the roller is higher than pressure outside the roller. Magnetic wrapping can be effectively scattered, so that magnetic separation grade is improved. The problems of difficult ore dressing and low magnetic separation grade for fine ores and superfine ores are effectively solved. At the same time, energy consumption can be saved by about 5-20%, the wear losses of the magnetic roller are small, the change rate is low, the cost of the magnetic roller is reduced, and accordingly, the cost of a magnetic separator is reduced. No water is required, and water pollution, running dust or air pollution cannot be caused.
Description
Technical field: [0001] The invention relates to a magnetic roller and a magnetic separator, in particular to a dry magnetic roller and a magnetic separator for dry mineral separation. Background technique: [0002] my country's iron ore resources have two characteristics: one is that there are many lean ores, about 80% of the mineral resources; Concentrate powder is mostly used, that is, raw ore is crushed, ore-grinded, magnetically separated, flotation and other procedures are used to remove gangue minerals, and iron concentrate powder with an iron grade higher than 60% is selected for smelting. [0003] In beneficiation, the current main process is to use wet magnetic separator for wet magnetic separation, but wet magnetic separation will consume water resources, 1 to 1.5 tons of water is consumed per ton of raw ore, tailings dams need to be built, and the discharged sewage pollutes the land And water sources, mineral processing cannot be carried out in water-scarce and ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B03C1/12
CPCB03C1/12
Inventor 张珂张进才胡沿东
Owner 张进才