Intermediate demagnetizing machine for magnetic selected iron ore powder

A demagnetization machine, iron ore technology, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve the problems of waste of energy output, unsatisfactory demagnetization effect, etc., and achieve high work efficiency, safe and reliable operation

Inactive Publication Date: 2011-04-20
黄万田
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The task of the present invention is to provide a medium frequency demagnetizer for magnetically separated iron ore powder, which solves the problems of waste of energy, low output, and unsatisfactory demagnetization effect by using two methods: the natural flow of the magnetically separated material and the gradual attenuation of the magnetic field intensity.

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  • Intermediate demagnetizing machine for magnetic selected iron ore powder
  • Intermediate demagnetizing machine for magnetic selected iron ore powder
  • Intermediate demagnetizing machine for magnetic selected iron ore powder

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Embodiment Construction

[0017] see figure 1 , which is a schematic diagram of the appearance structure of an embodiment of the hollow demagnetization assembly in the demagnetizer for magnetic separation of iron ore powder proposed by the present invention. The hollow demagnetization assembly includes a hollow cylinder 11 with an inner surface and a stepped cylindrical coil 1 with an outer surface and a capacitor assembly 2 electrically connected to the coil 1, and is axially inserted into the hollow cylinder 11 with both ends outward Extended insulating pipe fittings 3 . Among them, the outer surface of the coil 1 is provided with two steps 12 and 13, the steps 12 and 13 are formed by reducing the number of turns of the coil 1, the combination of the coil 1 and the capacitor component 2 can form a resonant electromagnetic wave, and the coil of this structure 1 The strength of the magnetic field that can be provided to the hollow cylinder 11 inside it gradually decays from the step 12 to the directio...

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Abstract

The invention relates to a medium-frequency demagnetization device which is used for magnetically selecting iron ore powder. The medium-frequency demagnetization device comprises a hollow demagnetization assembly, a hollow insulation pipe and a capacitance assembly, wherein the hollow demagnetization assembly is formed by coils and gradually attenuates from a material flowing direction; the hollow insulation pipe is axially arranged in the hollow demagnetization assembly, and both ends of the hollow insulation pipe extend outwards; the capacitance assembly is electrically connected with the coils which are arranged on the hollow demagnetization assembly; and the hollow demagnetization assembly and the capacitance assembly are combined to supply a magnetic field which gradually attenuates from the material flowing direction for the hollow position of the hollow demagnetization assembly, and the materials can be effectively demagnetized after flowing out of the hollow insulation pipe. In an iron ore powder magnetic selection technology, the ore grade and the recovery rate can be increased by 2 to 3 percent by adding the demagnetization device.

Description

Technical field: [0001] The invention relates to an intermediate frequency demagnetizer for magnetic separation of iron ore powder. Background technique: [0002] In the existing magnetite beneficiation process, the raw ore is usually crushed by a jaw crusher, then finely ground by a ball mill and polarized by a pole separator, and then the iron ore powder after pole separation is directly sent to the magnetic separator. Perform magnetic separation. Although the technical process of this kind of magnetic separation iron ore powder can separate most of the iron-containing particles, because the iron ore, especially the iron ore powder after polarizing, also contains many non-metallic particles, and the iron-containing particles Usually carry a remanence of 100-200 Oersted. These magnetic iron-containing particles are very easy to gather a number of non-metallic particles around them, resulting in the phenomenon of "magnetic agglomeration", and the particles that undergo magn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F13/00
Inventor 黄万田
Owner 黄万田
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