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Ring shaped air flotation machine

A flotation machine, ring-shaped technology, applied in flotation, solid separation, etc., can solve the problems of unstable flotation effect, high enrichment ratio, fast wall wear, etc., and achieve selection and sweeping time and frequency adjustment Flexible, overcome the low recovery rate, and reduce the effect of equipment wear

Inactive Publication Date: 2010-10-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this flotation equipment is that the wall wears out quickly, and the sensitivity of parameter changes is large, which leads to unstable flotation effect.
[0006] The flotation column filled with medium is filled with porous and net-like materials in the flotation column. The purpose is to let the pulp flow through the curved channels and collide with the air bubbles to increase the probability of the collision and attachment of the ore particles and the air bubbles, thereby reducing the flotation rate. The height of the column, but the porous and mesh media are prone to clogging, and the processing capacity of the equipment will decrease after the flow rate of the ore slurry slows down
[0007] Therefore, the currently widely used flotation column still has the disadvantages of high column body and high energy consumption. If it is possible to research and design a flotation machine with small height, low energy consumption, small wear, and low energy consumption of the flotation column , the enrichment ratio is high, but the flotation equipment with small height, low wear and high recovery rate will significantly improve the efficiency of mineral flotation separation and enrichment

Method used

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  • Ring shaped air flotation machine
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  • Ring shaped air flotation machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. The composition of the ring inflatable flotation machine: such as figure 1 As shown, it consists of a sorting column 1, a press-in air type bubble generator 2, an annular foam scraper mechanism 3, and a process pulp riser 4; the sorting column 1 consists of a column body 5, a foam concentrate feeding port 6, a central The ore feeding port 7, the tailings port 8, and the concentrate ring groove 9 are composed. The cross-sectional shape of the separation column 1 can be one of circular, rectangular or isosceles trapezoidal, and the ratio of the equivalent diameter of the cross-sectional area to the height is D / L=0.25~0.83; the annular foam scraper mechanism 3 is composed of a motor 10, a reducer 11, a scraper frame 12, a support frame 13, and a scraper 14; n separation columns 1 are combined to form a ring (n=n1 +n2+1, where: n1 is the number of selections required for the ore determined by the mineral processing test, n2 is the number of sweeps required for the ore de...

Embodiment 2

[0046] 1. The structure of the annular air-filled flotation machine is the same as that of Embodiment 1.

[0047] 2. Ore processing: copper sulfide ore with raw ore grade of 1.2%, grinding particle size: -200 mesh, accounting for about 85%.

[0048] 3. The structural parameters of the ring inflatable flotation machine are:

[0049] 1) The section shape of the sorting column is isosceles trapezoid, the upper bottom of the isosceles trapezoid is 1000mm, the lower bottom is 500mm, the height is 1000mm, the equivalent diameter of the sectional area is 489mm, and the height is 1950mm. The ratio of the equivalent diameter of the sectional area of ​​the column to the height is D / L=0.25, the number of separation columns n=n1+n2+1=12, wherein n1=5, n2=6;

[0050] 2) Pressurized air is introduced into the middle of the process slurry riser as the lifting power of the middling ore.

[0051] 4. Obtained technical indicators:

[0052] Copper concentrate contains copper grade ≥ 25%, cop...

Embodiment 3

[0054] 1. The structure of the annular air-filled flotation machine is the same as that of Embodiment 1.

[0055] 2. Ore processing: raw ore grade is 4% zinc sulfide ore, grinding particle size: -200 mesh accounts for about 75%.

[0056] 3. The structural parameters of the ring inflatable flotation machine are:

[0057] 1) The cross-sectional shape of the sorting column is rectangular, the length of the rectangle is 1000mm, the width is 1200mm, the equivalent diameter of the cross-sectional area is 618mm, and the height is 1800mm. n=n1+n2+1=7, wherein n1=3, n2=3;

[0058] 2) A sand pump is installed in the middle of the process slurry riser as the lifting power of the middling mine.

[0059] 4. Obtained technical indicators:

[0060] The grade of zinc contained in zinc concentrate is ≥50%, and the recovery rate of zinc is ≥84%.

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Abstract

The invention relates to a mineral flotation device which can generate bubbles by pressing air in and is provided with a ring-shaped combined structure, namely, a ring-shaped pneumatic flotation machine. The pneumatic flotation machine consists of sorting columns, an air pressing type bubble generator, a ring-shaped froth paddle mechanism and a process ore pulp lifting pipe; a plurality of sorting columns are combined to form a ring shape. Ore pulp is fed into a feed port of one sorting column, ore grains subside downwards, while bubbles raise upwards; in this way, the ore grains with hydrophobic property is prepared into rough concentrate through flotation, and then the rough concentrate is sent into fine selection sorting columns for a plurality of times of fine selection to obtain ore concentrate finally. The ore grains with hydrophilicity flow downwards with the ore pulp, pass through the process ore pulp lifting pipe and enter scavenging sorting columns for a plurality of times of scavenging to obtain mine tailing finally. The ring-shaped pneumatic flotation machine of the invention has the advantages of low energy consumption and abrasion, large inflating volume, high probability of collision and attachment between ore grains and bubbles, flexible adjustment of the times and period of fine selection and scavenging and large range of sorting granularity, so as to be an excellent device for mineral flotation, separation and upgrading.

Description

technical field [0001] The invention relates to the technical field of mineral processing engineering, in particular to an annular air-filled flotation machine, which adopts compressed air to generate air bubbles and has an annular composite structure for mineral flotation. Background technique [0002] Flotation machine is an important equipment to realize mineral flotation enrichment and separation. The technical and economic indicators of flotation are closely related to the flotation equipment used. There are many types of known flotation equipment, which are mainly divided into mechanical agitation flotation machines, inflatable agitation flotation machines, and inflatable flotation machines. For mechanical agitation flotation machines, the introduction of air is realized by the negative pressure generated by the high-speed rotation of the agitation impeller. When the agitation intensity is low, the generated vacuum is low, the amount of air introduced is insufficient,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/14B03D1/24
Inventor 文书明杨琳琳
Owner KUNMING UNIV OF SCI & TECH
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