Magnetic dry separating machine for lean iron ore

Abstract

The invention relates to a magnetic dry separation machine for lean iron ore. The machine is a double-layer structure frame. One end of the flat lower frame is equipped with a magnetic wheel, and the other end is equipped with a driven wheel. The conveyor belt is connected, and a feeding hopper is installed above the driven wheel; the upper frame is a triangular structure, and its flat bottom is parallel to the lower conveyor belt, and one end is equipped with a driving wheel, and the other end is equipped with a magnetic wheel. The elevation end of the upper frame is equipped with a driven wheel, and the driving wheel, magnetic wheel, and driven wheel are connected by a conveyor belt supported by a guide roller and its tensioner pulley, wherein the inner side of the conveyor belt between the driving wheel and the magnetic wheel Equipped with permanent magnets that form a levitating magnetic field. The invention adopts the combined magnetic field structure of the magnetic wheel and the flat-plate suspension magnetic field, increases the contact area between the raw material and the magnetic field, improves the utilization rate of the magnetic field, and finally separates the iron ore from the wool through two separations and one separation, and has the advantages of separation The outstanding advantages of thorough separation, high efficiency, and especially suitable for magnetic separation of lean iron ore.

Description

Technical field: [0001] The invention relates to a magnetic dry separator, in particular to a magnetic dry separator for lean iron ore. Background technique: [0002] The known permanent magnet dry separator generally has a cylindrical structure, which is composed of a feeding box, a drum placed in the feeding box and rotating with the main shaft, and an arc-shaped permanent magnet system installed inside the drum that does not rotate with the drum. It has the following defects in the process of use: first, the gap between the roller and the baffle plate in the feeding box is too small, and the raw material throughput is low, which affects the sorting efficiency; second, the contact area of ​​the magnetic field formed by the raw material and the arc-shaped permanent magnet system Small, low magnetic field utilization rate, resulting in unclear separation of iron ore and wool, high iron content in wool, especially not suitable for separation of lean iron ore. Invention cont...

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Problems solved by technology

[0002] The known permanent magnet dry separator generally has a cylindrical structure, which is composed of a feeding box, a drum placed in the feeding box and rotating with the main shaft, and an arc-shaped permanent magnet system installed inside the drum that does not rotate with the drum. It has the following defects in the process of use: first, the gap between the roller and the baffle plate in the feeding box is too small, and the raw material throughput is low, which affects the sorting efficiency; second, the contact area of ​​the magnetic field formed by the raw material and the arc-shaped permanent magnet system Small, low magnetic field utilization rate, resulting in unclear separation of iron ore and wool, high iron content in wool, especially not suitable for separation of lean iron ore

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