CN202129149U

CN202129149U - Inflated swirl microbubble floatation column sorting device

Info

Publication number: CN202129149U
Application number: CN201120167190U
Authority: CN
Inventors: 李延锋; 刘炯天; 李明勇; 陈文刊
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2011-05-24
Filing date: 2011-05-24
Publication date: 2012-02-01
Anticipated expiration: 2021-05-24

Abstract

The utility model discloses an inflated swirl microbubble floatation column sorting device comprising a bubble beneficiation chamber, a bubble concentrate collection groove disposed on the upper part of the bubble beneficiation chamber, a spraying pipe disposed on the top part of the bubble concentrate collection groove, and a swirl microbubble floatation column disposed on the lower part of the bubble beneficiation chamber. An inflated sorting chamber is disposed between the bubble beneficiation chamber and the swirl microbubble floatation column, and is provided with a conical net. A plurality of air inlet ports vertical to the conical net surface are uniformly disposed in the outer wall of the inflated sorting chamber. The inflated sorting chamber is extra disposed between the bubble beneficiation chamber of the swirl microbubble floatation column and a column sorting chamber, thereby the high concentration inflated flotation of minerals easy to float on the upper part, the middle concentration column flotation of the middle floatable minerals, mineralization of pipe flow and turbulence of minerals hard to flow, and swirl low concentration floatation can be realized. The step optimization sorting manner that the inflated flotation of the high concentration minerals easy to float can be realized earlier, and the swirl flotation of the minerals not easy to float can be realized later can be realized. By using the inflated swirl microbubble floatation column sorting device, the treating capacity of the flotation column can be improved greatly, meanwhile the drug consumption can be reduced, and the contradiction between the sorting efficiency and the energy consumption can be solved better.

Description

Inflatable cyclonic microbubble floatation column screening installation

Technical field

The utility model relates to a kind of inflatable cyclonic microbubble floatation column screening installation, is particularly useful for the sorting of coal slime, metallic ore and nonmetallic ore.

Background technology

Raising along with the mechanical coal mining degree; The intensification of mining depth, raw coal quality variation, the change of gravity separation technology; Particulate fine coal content primary and secondary in the raw coal is more and more, therefore the efficient sorting of particulate fine coal is directly connected to the economical efficiency of coal preparation plant.Flotation is the most effectual way that realizes slime separation at present, but its production cost is again a link the highest in the coal preparation plant, and one of the main reasons is that floatation concentration is low, and treating capacity is little, and electrical energy consumption per tonne of raw coal is high.Floatation equipment commonly used at present has flotation device and flotation column.Flotation device exists the flotation cell body shallow, and the cleaned coal froth bed is thin, the non-foam refining process; Thin mud poor selectivity, it is many to carry the thin mud of high ash in the foam secretly, and the efficiency of separation is low, and cleans ash is high, the situation of gravity treatment back of the body flotation often occurs; Machinery is interrupted to be forced to scrape bubble, scrape bubble speed when fast cleans ash high, scrape bubble speed when slow, run coal and cause the tail coal ash content low; To the ature of coal bad adaptability; Floor space is big, needs space for maintenance big, and construction investment is high; Maintenance load is big, and maintenance cost is high.Use wider rotational flow microbubble flotation column in the flotation column, its clustered column flotation, rotational flow sorting and pipe stream mineralising are that the step of one is optimized sorting, and it is good that main advantage is the sorting selectivity of fine-particle minerals, and the rate of recovery is high, and power consumption is little.But it is when being used for being prone to float coal, and the low concentration flotation needs the platform number of flotation column to increase, and equipment investment increases, as adopting major diameter flotation column, then hard transportation.Flotation column is when the higher concentration flotation, and selectivity and clean coal recovery are difficult to take into account simultaneously, is prone to cause the floating tail-coal ash content low, causes the wasting of resources and economic loss.Another kind of air flotation post, its main advantage are to utilize air compressor machine to produce compressed air and feed flotation column realization flotation, and power consumption is low, but its subject matter is that the rate of recovery is low.Generally speaking, advantage was more obvious when rotational flow microbubble flotation column was used for difficult separation coal, and the air flotation post has the low advantage of power consumption when being used for being prone to coal separation.

Summary of the invention

Technical problem: the purpose of the utility model is the weak point that overcomes in the prior art, and a kind of simple in structure, high concentration good separation effect, production cost is low, treating capacity is big inflatable cyclonic microbubble floatation column screening installation are provided.

Technical scheme: the inflatable cyclonic microbubble floatation column screening installation of the utility model; Comprise foam enrichment chamber, be located at the froth concentrate feeder on top, foam enrichment chamber and the shower at froth concentrate feeder top; The bottom of foam enrichment chamber is provided with rotational flow microbubble flotation column; Be connected with inflation separation chamber between described foam enrichment chamber and the rotational flow microbubble flotation column, be provided with the taper net in the inflation separation chamber, be evenly distributed with a plurality of air inlets perpendicular on the outer wall of inflation separation chamber with the taper wire side.

Described inflation separation chamber is 1～3, stepped arrangement; Described a plurality of air inlet is 3-8.

Beneficial effect:, have following advantage owing to adopted technique scheme:

1. inflatable cyclonic microbubble floatation column equipment has realized that the easy floating mineral high concentration air flotation in top, the flotation of middle iso flotability mineral intermediate concentration post, difficult floating mineral pipe flow the efficient sorting of step optimization of turbulent mineralising and the flotation of eddy flow low concentration.From top to bottom along with the variation of mineral floatability; Pulp density progressively reduces; Mineralization intensity progressively increases, and sorting is progressively strengthened, from energy consumption; Be prone to float mineral and adopt the air flotation of low energy consumption, the medium mineral that float to adopt post flotation, bigger pipe stream mineralising and the rotational flow sorting of difficult floating mineral employing power consumption, help improving concentrate yield and quality.

2. the inflation sorting of air flotation chamber has greatly improved the treating capacity of flotation column, has also reduced the medicine consumption simultaneously.After ore pulp gets into inflation separation chamber; The aeration quantity of differing heights aerating device and pressure are adjustable separately; To adapt to the variation of mineral floatability, make to be prone to the completion flotation in the air flotation chamber as far as possible of floating mineral, reduce the pulp density that gets into post flotation cell and rotational flow sorting chamber; The sorting concentration of middle and lower part will reduce, and dosing will significantly reduce.

3. inflatable cyclonic microbubble floatation column equipment can solve the contradiction between the efficiency of separation and the energy consumption preferably.Many coal preparation plants all adopt and increase aeration quantity and floating agent solution tail coal ash content problem of lower; Yet the excessive ore pulp air content that must cause circulating of the increase of aeration quantity and foaming agent increases; Circulating pump is easy to generate the insufficient pressure that cavitation erosion makes the circulation ore pulp; Rotational flow sorting effect variation, the tail coal ash content is carried to be come up.Increased multi-stage inflatable separation chamber; The coarse granule cleaned coal that floatability is good is being inflated separation chamber by diffeential floatation; And plenum chamber is on top, and pump entry is in the bottom, even the top aeration quantity more the circulating pump cavitation can not take place more yet; The relatively poor coal of floatability flows mineralising and rotational flow sorting through pipe, and the productive rate of cleaned coal further improves.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Among the figure: the 1-spray header; 2-froth concentrate feeder; 3-feed distributor; 4-taper net; The 5-air inlet; The 6-stabilier; The 7-bubble generator; The 8-cone tank; 9-circulation ore pulp pump; 10-mine tailing mouth, 11-foam enrichment chamber, 12-inflates separation chamber, 13-rotational flow microbubble flotation column, 14-post flotation cell, 15-rotational flow sorting chamber.

The specific embodiment

Embodiment below in conjunction with in the accompanying drawing further describes the utility model:

As shown in Figure 1; The inflatable cyclonic microbubble floatation column screening installation of the utility model; Mainly constitute by spray header 1, froth concentrate feeder 2, feed distributor 3, taper net 4, air inlet 5, stabilier 6, bubble generation gas device 7, cone tank 8, circulation ore pulp pump 9; Being divided into 4 chambers from top to down, is foam enrichment chamber 11, air flotation chamber 12, post flotation cell 14 and rotational flow sorting chamber 15 successively.The top of feed distributor 3 is foam enrichment chambers 11, is provided with froth concentrate feeder 2 above the foam enrichment chamber 11, and shower 1 is installed at the top.The bottom of feed distributor 3 is inflation separation chamber 12; Inflation separation chamber 12 is 1～3, when being connected with a plurality of inflation separation chamber 12, inflates the big up and small down stepped arrangement of separation chamber 12; Inside is provided with taper net 4; The outside is equiped with the air inlet 5 of 3～8 symmetries, and 12 bottoms, air flotation chamber are close to rotational flow microbubble flotation column 13, and rotational flow microbubble flotation column 13 comprises post flotation cell 14 and rotational flow sorting chamber 15; Post separation chamber 14 carries out the transition to rotational flow sorting chamber 15 by stabilier 6, and cone tank 8, circulation ore pulp pump 9 and bubble generator 7 have constituted rotational flow sorting chamber 14.

Claims

1. inflatable cyclonic microbubble floatation column screening installation; Comprise foam enrichment chamber (11), be located at the froth concentrate feeder (2) on top, foam enrichment chamber (11) and the shower (1) at froth concentrate feeder top; The bottom of foam enrichment chamber (11) is provided with rotational flow microbubble flotation column (13); It is characterized in that: be connected with inflation separation chamber (12) between described foam enrichment chamber (11) and the rotational flow microbubble flotation column (13); Be provided with taper net (4) in the inflation separation chamber (12), be evenly distributed with and the perpendicular a plurality of air inlets (5) of taper net (4) face on the outer wall of inflation separation chamber (12).

2. inflatable cyclonic microbubble floatation column screening installation according to claim 1 is characterized in that: described inflation separation chamber (12) is 1～3, stepped arrangement.

3. inflatable cyclonic microbubble floatation column screening installation according to claim 1 is characterized in that: described a plurality of air inlets (5) are 3-8.