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A method for energy-saving transformation of high-gradient magnetic separator for mineral processing

A high-gradient magnetic separator and magnetic separation technology, applied in high-gradient magnetic separators, chemical instruments and methods, magnetic separation, etc., can solve problems such as large power consumption, and achieve high energy consumption, cost reduction, and The effect of manufacturing costs

Active Publication Date: 2020-11-13
NANJING ACAD OF UNDERGROUND SPACE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reference attached figure 1 , the high-gradient magnetic separator in the prior art mostly uses the electromagnetic coil group 0-3 to generate the magnetic field. The size adjustment of the magnetic field strength has obvious disadvantages. Because it uses an electromagnetic coil, it needs a large current when generating a magnetic field, and its power consumption is huge. It is a famous "electric tiger". The magnetic separation process requires the use of a magnetic field above 1.5T for magnetic separation. Therefore, in many rough or weak magnetic separation applications, the use of electromagnetic coil type high gradient magnetic separators is often "overkill".
Moreover, when the coil is energized to generate a magnetic field, it will also generate huge heat due to eddy current effects and other reasons. The machine must control the heat to operate normally. High-gradient magnetic separators that use electromagnetic coil magnetic separation need to be equipped with a set of complex oil cooling. Or the water-cooled circulation system 0-7. At the same time, a huge sealed casing 0-4 with an oil circuit structure is required to contain the electromagnetic coil group 0-3, which further increases the complexity and complexity of the high-gradient magnetic separator. manufacturing cost
In the prior art, there is a lack of a modification method that can reduce the energy consumption and complexity of the existing high-gradient magnetic separator

Method used

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  • A method for energy-saving transformation of high-gradient magnetic separator for mineral processing
  • A method for energy-saving transformation of high-gradient magnetic separator for mineral processing
  • A method for energy-saving transformation of high-gradient magnetic separator for mineral processing

Examples

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Effect test

Embodiment 1

[0040] Refer to the attached figure 2 , a modified energy-saving high-gradient magnetic separator for mineral processing, including a frame 1, a magnetic separation part 2, a magnetic system 3, a piping system and a collection part; the frame 1 includes a lower base 1-1 and an upper support frame 1 -2.

[0041] The magnetic separation part 2 is installed on the lower base 1-1, and the magnetic system 3 is fixedly installed on the outside of the magnetic separation part 2 through the upper support frame 1-2; the magnetic separation part 2 is an internal hollow cavity structure with a magnetic separation cavity wall 2-1, which is made of magnetically permeable or paramagnetic material, such as magnetically permeable stainless steel; a magnetic separation medium 2-2 is arranged in the magnetic separation cavity of the magnetic separation part 2, and the magnetic separation medium 2-2 is a tooth filled with intervals Plate media, space-packed rod media, tightly-packed spherical ...

Embodiment 2

[0055] A transformation method for transforming the electromagnetic coil type high gradient magnetic separator for mineral processing in the prior art into the energy-saving high gradient magnetic separator for mineral processing in Example 1, refer to the appendix. Figure 1-9 , the method is applied to electromagnetic coil type high gradient magnetic separator 0, which includes: upper pipeline 0-1, magnetic separation cavity 0-2, electromagnetic coil group 0-3, coil shell 0-4, support 0-5, Lower pipeline 0-6, cooling system 0-7; the method has the following modification steps:

[0056] (1) Power off the electromagnetic coil type high gradient magnetic separator 0, drain the slurry in the magnetic separation chamber 0-2, and drain the cooling liquid (such as oil or water) in the cooling system 0-7 and the coil shell 0-4. ) drain cleanly, disconnect the pipeline connected with the upper pipeline 0-1 and the lower pipeline 0-6;

[0057] (2) Remove the external related accessor...

Embodiment 3

[0065] see attached Figure 9 , a low-power energy-saving high-gradient magnetic separator for enhanced mineral processing, which adds a spiral pipe 3-1 and its matching collection tray 3-2, traction rope 3- 3. The lifting device 3-4 and the permanent magnet 3-5 use double-layer spiral pipes, the two spiral pipes have opposite directions of rotation, and the permanent magnets 3-5 in the two spiral pipes 3-1 attract the polarity sequence of the head and tail On the contrary, so that the magnetic system 3 can generate the magnetic field lines superimposed in the same direction in the magnetic separation cavity of the magnetic separation part 2 to improve the strength of the magnetic field formed in the magnetic separation cavity of the magnetic separation part 2, its working principle and control method The same as in Example 1.

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Abstract

An ore dressing high-gradient magnetic separator energy-efficient modifying method is provided. An electromagnetic coil type high-gradient magnetic separator in the prior art is modified into a permanent-magnet high-gradient magnetic separator which can be applied to most roughing, low-intensity magnetic separation, or part of strong magnetic separation ore dressing processes. An electromagnetic coil and its control system are removed to solve the high energy consumption of the electromagnetic coil type high-gradient magnetic separator in the prior art. The cooling system complex in structurein the electromagnetic coil type high-gradient magnetic separator in the prior art is removed so as to simplify the complex structure of a magnetic separator. By modifying the existing electromagneticcoil type high-gradient magnetic separator, especially a waste magnetic separator with damaged electromagnetic coil group, coil housing and cooling system, the cost of repurchasing the equipment is reduced. The modified magnetic separator is simple in structure, reduces the manufacturing cost of fittings, is easy to control and reduced in use and maintenance cost.

Description

technical field [0001] The invention relates to a transformation method of a high gradient magnetic separator, in particular to an energy-saving transformation of a high gradient magnetic separator used for magnetic separation from fluid ore pulp. Background technique [0002] In the history of human mineral extraction, the use of magnetic fields to conduct magnetic separation of minerals has a history of more than 100 years. The initial magnetic separators have not been widely used due to the constraints of basic scientific development such as theory and materials. Since the use of electromagnets to generate magnetic fields in 1855, the theory and practice of magnetic separators have become more and more perfect. Various types of industrial magnetic separation equipment have emerged in the industry, and magnetic separation methods have been widely used in iron ore beneficiation. application. After the 1960s, with the continuous development of material science, the magnetic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/033
CPCB03C1/0332
Inventor 刘新珍
Owner NANJING ACAD OF UNDERGROUND SPACE ENG
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