Downstream collecting type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical ring high gradient magnetic separator and magnetic beneficiation method

A high-gradient magnetic separator and magnetic medium technology, applied in the field of magnetic separator and magnetic ore dressing, magnetic medium, and magnetic medium stack, can solve the problems of the decline in the recovery rate of magnetic minerals, the difficulty in adjusting the feeding flow rate, and the inability to apply, etc. Improved recovery, elimination of mechanical inclusions, and easy handling

Pending Publication Date: 2019-02-15
CENT SOUTH UNIV
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Problems solved by technology

Increasing the feeding speed can eliminate the accumulation of magnetic particles in the upstream of the medium (the side of the medium facing the pulp flow), and the magnetic particles are captured in the downstream of the medium (the side facing away from the pulp flow), which can avoid mechanical inclusions, but will cause magnetic minerals The sharp drop in the recovery rate and the difficult adjustment of the feed flow rate in production, so it cannot be applied

Method used

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  • Downstream collecting type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical ring high gradient magnetic separator and magnetic beneficiation method
  • Downstream collecting type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical ring high gradient magnetic separator and magnetic beneficiation method
  • Downstream collecting type magnetic medium, magnetic medium stack, intermittent magnetic separation equipment, vertical ring high gradient magnetic separator and magnetic beneficiation method

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Effect test

Embodiment 1

[0054] image 3 As shown, in the downstream collecting magnetic medium of this embodiment, the magnetic medium is sequentially provided with a non-magnetic part 1 and a magnetic part 2 along the flow direction of the pulp, and the non-magnetic part 1 and the magnetic part 2 are fixedly connected to each other. In this embodiment, the magnetic medium is cylindrical, and in the cross section of the magnetic medium, the areas of the non-magnetically permeable part 1 (area S1 ) and the magnetically permeable part 2 (area S2 ) are equal.

[0055] The magnetic medium stack of this embodiment includes a plurality of the above-mentioned magnetic mediums, and the magnetic mediums are arranged in parallel and at intervals. In this embodiment, the number of magnetic media can be changed according to actual needs.

[0056] Such as Figure 4 As shown, the present embodiment provides a kind of intermittent magnetic separation equipment, comprising a magnetic field generator 3 and a stack ...

Embodiment 2

[0069] In the downstream capture type magnetic medium in this embodiment, the shape and material of the non-magnetically conductive part 1 and the magnetically conductive part 2 can be the same as any magnetic medium in embodiment 1, the difference is that the magnetic medium is annular, such as Figure 17 shown.

[0070] Utilize the magnetic medium pile that the annular magnetic medium in the present embodiment obtains, intermittent magnetic separation equipment (such as Figure 18 Shown) and the structure of the vertical ring high gradient magnetic separator, the method utilizing its two magnetic separations are all the same as in Example 1.

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Abstract

The invention discloses a downstream collecting type magnetic medium. The magnetic medium is sequentially provided with a non-magnetic-conductive portion and a magnetic conductive portion in the flowdirection of slurry; and the non-magnetic-conductive portion and the magnetic conductive portion are fixedly connected with each other. The invention further provides a magnetic medium stack comprising magnetic media, and the magnetic media are arranged in parallel at intervals. The invention further provides intermittent magnetic separation equipment comprising the magnetic medium stack, a magnetic beneficiation method of the intermittent magnetic separation equipment, a vertical ring high gradient magnetic separator and a magnetic beneficiation method of the vertical ring high gradient magnetic separator correspondingly. The magnetic medium is sequentially provided with the non-magnetic-conductive portion and the magnetic conductive portion in the flow direction of slurry, thus, accumulation of magnetic particles on the upstream portion of the magnetic medium is eliminated, most or all of the magnetic particles are accumulated on the downstream portion of the magnetic medium, and direct impact of ore current to a magnetic mineral accumulation zone is reduced, so that mechanical inclusions are reduced or eliminated, the recovery rate of fine-grained weakly magnetic minerals is increased, and the grade of recovered minerals is improved.

Description

technical field [0001] The invention belongs to the field of mineral separation equipment, and in particular relates to a magnetic medium, a magnetic medium stack, a magnetic separator and a magnetic separation method. Background technique [0002] Weak magnetic mineral resources mainly include hematite, limonite, siderite, ilmenite, wolframite, manganese ore and tantalum-niobium rare earth ore. These weakly magnetic mineral raw materials have played an important role in my country's economic development. High-gradient magnetic separation is a common method for processing weak magnetic minerals. However, due to the mechanical inclusion of gangue minerals in the separation process, it is difficult to obtain qualified weak magnetic mineral concentrate products in a single high-gradient magnetic separation operation. High-gradient magnetic separation is used for roughing, and the obtained rough concentrate is then flotation-selected to obtain the final concentrate product. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/031B03C1/00
CPCB03C1/002B03C1/031
Inventor 郑霞裕王毓华卢东方
Owner CENT SOUTH UNIV
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