Air-suction type permanent magnet ore concentrating machine

Abstract

The invention discloses an air-suction type permanent magnet ore concentrating machine comprising a material inlet, a dry magnetic separator, a tailings bin and a material bin, wherein the inner top wall of the cavity of the dry magnetic separator is arranged slantly and an air suction device is arranged at the outlet end of the dry magnetic separator; and a first magnetic roller set and a second magnetic roller set are sequentially arranged along the material inlet direction inside the cavity of the dry magnetic separator. The air-suction type permanent magnet ore concentrating machine increases the flowing accuracy of powder and enhances the precision of magnetic separation by the improvement on an air suction mode, a disturbance device, the magnetic separator and the like.

Description

technical field [0001] The invention relates to the field of dry-type permanent magnet concentrators, in particular to an air-suction permanent magnet concentrator. Background technique [0002] At present, my country's iron ore raw ore production ranks first in the world, but most of my country's iron ore resources are lean ore, and the amount of equivalent metal accounts for a low proportion of the world's output. According to the survey data of the my country Geological Survey Bureau, the current global iron ore output is about 2 billion tons, and China's iron ore output is about 600 million tons, accounting for about 33% of the global output. In addition, from the perspective of the variety and quality of iron ore, due to the characteristics of poor, miscellaneous and fine domestic resources, most ores need grinding and beneficiation, and fine-grained iron concentrate is called the leading product of the iron ore industry. At present, its production is mainly based on w...

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Problems solved by technology

At present, its production is mainly based on wet separation. The disadvantages of wet separation are: its production process requires a large amount of water resources, and the discharged waste water seriously pollutes the environment; The existence of mines poses potential security risks to the local area

Therefore, the wind dry separation method has attracted the attention of the industry because of its characteristics of no need for water and the harmless treatment of tailings, such as wind dry magnetic separator, etc., but it still has many shortcomings that need further improvement : 1. When the DC wind drives the ore powder through the dry magnetic separation device, the ore powder passing through the wind quickly, especially the ore powder on the upper part of the dry magnetic separation device is far away from the magnetic roller, and it is difficult to ensure that all metals can effectively enter the magnetic system range , that is, the efficiency of magnetic separation is low; 2. The blower-type magnetic separator has high requirements on the sealing performance of the device. Once the wind leaks, the powdery mineral material will leak out of the cavity with the wind, and the mineral processing efficiency is low and the wind is weak. And pollute the environment; 3. The magnetic separation surface of the drum type magnetic separation device is short, the ore powder passes through the magnetic separation surface quickly, and the precision of magnetic separation is low

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