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Special adjustable foam separation device for crystalline graphite column separation and foam separation method

A technology for crystalline graphite and foam separation, applied in solid separation, flotation, etc., can solve problems affecting the normal operation of flotation columns, low recovery rate, unstable equipment operation, etc., to improve separation recovery rate and equipment work The effect of stability

Pending Publication Date: 2020-09-25
黑龙江哈工石墨科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, flotation column flotation crystalline graphite has disadvantages such as low recovery rate and unstable equipment operation. The fundamental reason is that the graphite mineral itself is strongly hydrophobic, and the mineralized foam is very easy to form a chain-like, agglomerated polymer, and the foam layer The flow state is poor, it cannot be discharged in time, and it will accumulate on the overflow surface of the flotation column to form a "dome cover", which will affect the normal operation of the flotation column; especially in large-diameter industrial equipment, the foam overflow path in the center is long, and this phenomenon is more serious. serious, which limits the large-scale promotion and application of flotation columns in crystalline graphite mines

Method used

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  • Special adjustable foam separation device for crystalline graphite column separation and foam separation method
  • Special adjustable foam separation device for crystalline graphite column separation and foam separation method
  • Special adjustable foam separation device for crystalline graphite column separation and foam separation method

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Effect test

Embodiment 1

[0034] The invention provides a special foam separation device for adjustable crystalline graphite column, such as figure 1 , figure 2 , image 3 shown. The flotation column is used in the flotation process of crystalline graphite, which has the advantages of significantly shortening the process flow and improving the concentrate grade; after the mineralized foam in the column rises, a foam layer is formed on the overflow surface, which flows evenly from the center to the surrounding and jumps over the overflow. The edge of the flow enters the concentrate collection tank. However, crystalline graphite has extremely strong hydrophobic polymerization, and its mineralized foam rises to the overflow surface and then collapses and merges, often forming chain-like and agglomerated aggregates. The laminar flow state of the foam is poor, and it accumulates on the overflow surface of the flotation column A "dome cover" is formed, which cannot be discharged in time, causing the targ...

Embodiment 2

[0042] The invention provides an adjustable crystalline graphite column separation special foam separation device, as attached figure 2 As shown, the bottom edge of the tail end of the blade 3 is at the same level as the edge of the overflow surface of the flotation column. The linear distance from the installation end of the blade 3 to the tail end is 0.8-0.9 times the radius of the overflow surface of the flotation column, and the vertical width of the blade 3 is 0.5-0.8 times the thickness of the foam layer. The bubble scraping blade 3 is installed on the hollow shaft 7 with the gear 6 along the tangential direction, and there are a plurality of reserved bolts on the hollow shaft 7, which can be used to adjust the height of the bubble scraping blade 3.

[0043] The two bubble scraping blades 3 are 180° rotationally symmetrical with respect to the center of the flotation column 2, and it is ensured that the scanning surfaces of the bottom edges of the two bubble scraping bl...

Embodiment 3

[0047] The present invention provides a special foam separation device for adjustable crystalline graphite column selection. The tests compared SF type flotation machine, FCSMC type flotation column (self-overflow foam), and FCSMC type flotation column (straight-line foam scraping version) , FCSMC type flotation column (arc-shaped scraping blade) and FCSMC type flotation column (blade described in this patent) (Note: different types of blades are respectively installed on the hollow shaft described in this patent, and the control test is guaranteed to have the same Rotation speed, depth of embedded foam, contact area between the bottom edge of the blade and the foam) for the flotation index of the same material under the same test conditions. The fixed carbon content of the test raw ore is 91.5%, the amount of kerosene is 25g / t, the amount of No. 2 oil is 13g / t, and a stage of open circuit flotation is carried out. The tests of each group were carried out continuously for 24 h...

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Abstract

The invention discloses a special adjustable foam separation device for crystalline graphite column separation and a foam separation method. The device comprises a hollow column, wherein the hollow column is sleeved with a hollow shaft; a gear is mounted on the hollow column; an adjustable-speed motor drives a transmission gear to rotate through a belt wheel, and the transmission gear is meshed with the gear; two foam scraping blades are of plate-shaped structures with transverse axes having certain radians and deflection angles, the included angles between blade section lines corresponding toall the radiuses and the axis of a flotation column are different; the edges of the blade installation ends of the foam scraping blades and the edges of the tail ends of the foam scraping blades formcertain inclination angles, and the foam scraping blades are installed on the hollow shaft in a tangential direction; and an ore separator is mounted at the lower part of the hollow column. The defect that crystalline graphite foam is poor in flow state can be overcome, concentrate foam can be recycled in time by applying external force, and the separation sorting and recycling rate of the crystalline graphite flotation column and the working stability of equipment are improved.

Description

Technical field: [0001] The invention relates to a foam separation device and a foam separation method specially used for adjustable crystalline graphite column selection. Background technique: [0002] Crystalline graphite, also known as flake graphite, has excellent physical, chemical and mechanical properties, and has high utilization value. It is recognized as a strategic resource; its surface is highly hydrophobic, and it is generally purified initially by flotation. The number of regrinding and selection stages in production is often as many as 7 to 12 times, which has disadvantages such as long process flow, unstable production, high cost, and cumbersome plant layout. [0003] In recent years, there have been more and more researches on the application of flotation columns in the separation of crystalline graphite, and the combined flotation process of machine + column has appeared; most data show that flotation columns can replace flotation machines in the flotation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/14B03D1/02
CPCB03D1/02B03D1/1462
Inventor 牛敏徐明山
Owner 黑龙江哈工石墨科技有限公司