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Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof

A technology that interferes with bed and interfacial forces, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problems of small adaptable range of feed particle size and poor sorting effect, and achieve large adaptable range and high sorting accuracy high effect

Inactive Publication Date: 2009-04-08
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
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Problems solved by technology

[0008] The range of adaptation to the particle size of the feed material is small, and when the density difference between the target mineral (clean coal) and the waste mineral (gangue) is small, the separation effect is poor

Method used

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  • Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof
  • Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof
  • Coarse slime interference bed separation equipment based on gravity force and interfacial force, method and uses thereof

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Embodiment Construction

[0018] The coal slime disturbed bed sorting equipment based on gravity and interface force of the present invention, its preferred embodiment is as follows figure 2 As shown, it includes the main body 1 of the disturbing bed separator. The lower part of the main body 1 of the disturbing bed separator is provided with a water inlet 2 and an underflow port 4 , and the upper part is provided with a feeding port 3 and an overflow port 5 . The interference bed separator is a water medium interference bed separator.

[0019] The lower part of the main body 1 of the interfering bed separator is also provided with an air inlet 6 for introducing air into the rising water flow to separate the coarse coal slime.

[0020] The air inlet 6 can be connected with a bubble generating device, which is used to make the air into bubbles before adding them into the water flow.

[0021] The bubble generating device may include a circulating pump, a bubble generator, etc. Part of the middle ore in...

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Abstract

The invention discloses a sorting device for a coarse coal slime interference bed based on gravity and interfacial force, a method and application thereof, wherein air bubbles are introduced into the sorting device of the interference bed. Under the action of ascending water flow, an environment similar to heavy medium sorting is formed by using fluidization of fine coal slime carried in fed materials; and the introduced air bubbles are attached to hydrophobic low density particles so that the real density of an air bubble-hydrophobic particle polymer is reduced and the density difference between head coals and minerals is increased. The sorting device realizes the sorting based on the combined action of gravity and interfacial force in a solid-liquid-gas three-phase interference bed, has large adaptation range to the particle size of the fed materials and high sorting precision, can effectively sort coarse coal slime which has wide level and is difficult to sort, and is in particular applicable to the sorting of the coarse slime of which the particle diameter is between 2 and 0.3 millimeter.

Description

technical field [0001] The invention relates to a mineral processing technology, in particular to a coarse coal slime disturbed bed separation device, method and application based on gravity and interface force. Background technique [0002] At present, the rapid development of coal preparation technology has basically formed a mature separation process based on coarse coal dense medium cyclone separation and coal slime flotation. The dense medium cyclone develops towards the direction of large-scale, and the coal slime flotation develops towards the direction of improving the selectivity of coal slime. [0003] However, on the one hand, the application of the large-diameter dense medium cyclone based on the gravity separation technology leads to an increase in the effective separation limit of the cyclone; on the other hand, the application of the micro-bubble flotation column based on the flotation technology makes the flotation The upper limit of the selected feed partic...

Claims

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Application Information

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IPC IPC(8): B03B5/46
Inventor 刘文礼陈子彤符东旭
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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