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Floating agglomeration electromagnetic concentrating equipment

A technology of electromagnetic beneficiation and flotation agglomeration, applied in the field of mineral beneficiation and processing, can solve the problems of low concentrate grade, black tailings, unstable overflow, etc., and achieve low cost, fast separation speed and compact structure. Effect

Inactive Publication Date: 2015-08-05
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, in various iron ore dressing plants in China, the main magnetic separation equipment used is the drum magnetic separator. It enters the ore feeding area of ​​the tank body in a loose state. Under the action of the magnetic field, the magnetic ore particles undergo magnetic aggregation to form a "magnetic group" or "magnetic chain". The "magnetic group" or "magnetic chain" is subjected to magnetic force in the pulp. Due to the interfacial characteristics of fine-grained minerals (including fine-grained iron concentrate), it is easy to undergo heterogeneous condensation and form agglomerates with large-grained gangue minerals, resulting in tailings running In addition, the drum magnetic separator still has the problem of unstable overflow, it is difficult to effectively remove the magnetic impurity minerals in the pulp, and the final concentrate is of low grade

Method used

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  • Floating agglomeration electromagnetic concentrating equipment
  • Floating agglomeration electromagnetic concentrating equipment
  • Floating agglomeration electromagnetic concentrating equipment

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Embodiment 2

[0038] As an improvement of Embodiment 1, a plurality of foam shearing devices 8 can be arranged on the channel of the second section of the bubble delivery pipe 7, which are mainly used to shear the initially generated micro-nano bubbles, thereby obtaining more nano-bubbles and making the micro-nano bubbles The size of bubbles and nano-bubbles is more uniform, preventing the merger between micro-bubbles and nano-bubbles, which is conducive to the smooth progress of "floc" floating agglomeration; in this embodiment, the shearing device 8 can be multiple radially located There is a filter screen with irregular pores in the segment to block and shear the air bubbles with larger diameters to form more nano-bubbles, or the foam shearing device 8 can use multiple friction plates with irregular lines , can also play the role of shearing the large bubbles in the water flow to form more nano-bubbles; or, a mace-shaped barrier can also be used to shear and block the bubbles. There are ...

Embodiment 3

[0040] As a further improvement, the present embodiment divides the column body 1 into a vertical upper section and a conical lower section, and multiple groups of helical tube excitation coils 9 of the alternating magnetic field generator are wound around the periphery of these two sections, which can be used in the vertical upper section and the conical lower section. The lower section of the cone produces a penetrating uneven alternating magnetic field to improve the separation effect. The lower section of the cone is more conducive to collecting the magnetic mineral particles after flotation, and they are more thoroughly discharged from the concentrate discharge port or the connected concentrate discharge pipe. Further, the column body 1 can also be set as a matching structure between the inner wall and the outer wall, and a closed space 10 is formed between the inner wall and the outer wall for assembling the solenoid excitation coil 9 .

[0041] Further, the air inlet pip...

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Abstract

The invention provides floating agglomeration electromagnetic concentrating equipment. The lower end of a cylinder is provided with a concentrate discharging port or connected with a concentrate discharging pipe, a discharging port of a feeding pipe extends into the cylinder and is positioned on the middle upper portion in the cylinder, an output port of a micronano bubble generating device is communicated with an inner cavity of the cylinder tangentially and corresponds to the discharging port of the feeding pipe in position, an alternating magnetic field generator is positioned on the periphery of the cylinder and provides a nonuniform alternating magnetic field, and an overflow tank is positioned above the cylinder and communicated with the upper end of the cylinder. The equipment can generate a lot of micronano bubbles, especially nano bubbles, and the micronano bubbles and the alternating pulse electromagnetic field jointly act to enable magnetic or strongly-magnetic minerals and nonmagnetic or weakly-magnetic gangue minerals in material ore pulp to be in dispersion, agglomeration, re-dispersion and selective agglomeration respectively so as to enable the nonmagnetic or weakly-magnetic gangue minerals to thoroughly break away from a magnetic chain finally, so that escape of tailings is avoided effectively, and high-grade magnetic iron concentrate or titanomagnetite concentrate is obtained finally.

Description

technical field [0001] The invention belongs to the field of mineral beneficiation and processing, and in particular relates to an electromagnetic beneficiation device, which is mainly used for upgrading the quality, reducing impurities and efficiently separating strong magnetic minerals such as magnetite rough concentrate or titanium magnetite rough concentrate. Background technique [0002] At present, in various iron ore dressing plants in China, the main magnetic separation equipment used is the drum magnetic separator. It enters the ore feeding area of ​​the tank body in a loose state. Under the action of the magnetic field, the magnetic ore particles undergo magnetic aggregation to form a "magnetic group" or "magnetic chain". The "magnetic group" or "magnetic chain" is subjected to magnetic force in the pulp. Due to the interfacial characteristics of fine-grained minerals (including fine-grained iron concentrate), it is easy to undergo heterogeneous condensation and fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/32
Inventor 杨耀辉熊文良廖祥文曾小波刘亚川陈炳炎
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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