Multi-stage dry magnetic separator

Abstract

The invention relates to a multi-stage dry magnetic separator which is characterized by comprising four layers of conveying mechanisms sequentially arranged from top to bottom, wherein from top to bottom, the four layers of conveying mechanisms sequentially comprise a first-stage magnetic separation main conveyor (4) at the first layer, a first-stage auxiliary conveyor (5) at the second layer, a second-stage magnetic separation main conveyor (6) at the third layer and a second-stage auxiliary conveyor (7) at the fourth layer. The multi-stage dry magnetic separator can pick out concentrate withhigher iron content, middlings with medium iron content and tailings with lower iron content; the concentrate is picked out from the right section of the bottom of the multi-stage dry magnetic separator; a concentrate discharging hole (9) is formed in the right section of a corresponding lower frame (3); the middlings are picked out from the middle section of the bottom of the multi-stage dry magnetic separator; and a middlings discharging hole (10) is formed in the middle section of the corresponding lower frame (3). The multi-stage dry magnetic separator has the advantages of being high inmagnetic separation efficiency, adaptability and using stability and convenient to maintain.

Description

technical field [0001] The invention relates to a multistage dry magnetic separator, which belongs to the field of magnetic separation machinery. Background technique [0002] Compared with the global iron ore resources, my country has a large number of low-grade iron ore mineral resources. In recent years, in order to make full use of the existing low-grade magnetite mineral resources in China to make up for the shortage of domestic iron ore resources, Domestic enterprises have been involved in the development process of low-grade magnetite mineral resources. [0003] The current magnetic separation process cannot fully exploit magnetite, which to some extent causes a waste of minerals. There are several defects in the dry magnetic separators on the market: [0004] 1. The sensitivity of magnetic separation classification is poor, and more magnetic separation operations are required, and the efficiency of magnetic separation is low; [0005] 2. Due to the limited magnetic...

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Problems solved by technology

[0004] 1. The sensitivity of magnetic separation classification is poor, requiring more magnetic separation operations, and the efficiency of magnetic separation is low;

[0005] 2. Due to the limited magnetic adjustment ability of the same magnetic separator, it is impossible to make specific adjustments according to the specific conditions of different mines, and the adaptability is poor;

[0006] 3. The conveyor belt used for ore transportation of the traditional magnetic separator is generally a belt, and there are rollers installed inside the belt. The working environment is harsh, the dust is large, the speed is high, and the bearing of the roller is easily damaged and stuck, causing the outer surface of the roller to Wear, crack and cut the belt, the maintenance cost is high, which seriously restricts the production;

[0007] 4. The traditional magnetic separator is formed by installing various parts on a main frame to form a whole. When a fault occurs, it needs to be shut down to disassemble and repair the entire magnetic separator. The maintenance cycle is long, wasting time and reducing production. efficiency

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