CN205182958U - Coal slime flotation unit based on active oil vacuole of cold state - Google Patents

Abstract

The utility model provides a coal slime flotation unit based on active oil vacuole of cold state, this system includes ultrasonic atomization ware, mixing chamber, air -blower, system bubble device, bubble generator, flotation column, gas holder and gas flowmeter, its characterized in that of, the mixing chamber has two entrys, and one of them entry links to each other with the export of ultrasonic atomization ware, another entry links to each other with the gas outlet of gas holder through gas flowmeter, has realized preparing the function of the air current that contains suitable oil mist concentration in the mixing chamber, the export management way of mixing chamber and the entry of air -blower link to each other, and the export of air -blower and the entry of system bubble device link to each other, and the export management way of system bubble device links to each other with bubble generator's the medicine mouth that advances, and the modified oil vacuole that forms in system bubble device is finally through in the bubble generator input flotation column, have realized regarding as the function of flotation carrier with the active oil vacuole of cold state.

Description

A kind of coal slime flotation device based on the active oil vacuole of cold conditions

Technical field

The utility model relates to a kind of coal slime flotation device, particularly relates to a kind of low-order coal coal slime flotation device based on the active oil vacuole of cold conditions.

Background technology

Coal as the important support of China's energy and the important raw material of industry, for socio-economic development and energy security supply provide important leverage.According to " BP2035 world energy outlook " prediction, the proportion of coals in 2035 in China's primary energy structure still can remain on about 51%.Low-order coal is the coal resources of the low metamorphic grade comprising brown coal, jet coal, dross coal and weakly caking coal etc.In China, low-order coal resource is very abundant, according to 2014 " BP world energy sources statistical yearbook ", accounts for 45.68% of coal in China proved reserves.The output of low-order coal in 2013 reaches 1,800,000,000 tons, accounts for 50% of coal total growth, has become the important component part of coal in China production of energy and supply.Along with coal mining mechanization degree improve constantly the deterioration with ature of coal, the degree of metamorphism of low-order coal is low frangible in addition, and slime content and ash content sharply rise, and effective flotation problem of low-order coal coal slime becomes the focus that coal separation professional domain is paid close attention to day by day.Because low-order coal degree of metamorphism low oxygen content is high, Surface gap degree is large, cause its floatability poor, clean coal recovery is low, causing the waste of coal resources, just have to strengthen the use amount of collecting agent to improve smart coal yield, but this can cause coal slime flotation high cost again, bring difficulty to the subsequent processing operations of product, affect the economic benefit of coal enterprise.For this reason, for the flotation of low-order coal coal slime, ash falls in upgrading, reduction flotation medicine consumption becomes central issue.

Utility model content

In order to solve the technical barrier existed in above-mentioned low-order coal coal slime flotation, the active oil vacuole floatation process proposed at present, although achieve good test effect, but need to be heated to high temperature to carry out the gasification of oiliness medicament in the manufacture of oil vacuole and the dispersion process of oil droplet, this also exists a series of potential safety hazard in the operation of reality, significantly limit applying of this technique.In addition, due to needs heating and gasifying, in order to prevent the device damaging heater, the use of water miscible surfactant is also restricted.For this reason, the utility model proposes a kind of coal slime flotation device based on the active oil vacuole of cold conditions and aim to provide a kind of safe and reliable float test system.

Technical scheme: the technical solution of the utility model is: a kind of coal slime flotation device based on the active oil vacuole of cold conditions, this device comprises ultrasonic ultrasonic delay line memory 3, mixing chamber 4, air blast 5, foam production device 6, bubble generator 7, flotation column 8, air accumulator 13 and gas flowmeter 14, it is characterized in that, described mixing chamber 4 has two entrances, one of them entrance is connected with the outlet of ultrasonic ultrasonic delay line memory 3, another entrance is connected by the gas outlet of gas flowmeter 14 with air accumulator 13, achieves the function of the air-flow produced containing suitable oil mist concentration in mixing chamber 4; The outlet of mixing chamber 4 is connected with the entrance of air blast 5 by the road, the outlet of air blast 5 is connected with the entrance of foam production device 6, the outlet of foam production device 6 is connected with the feeding opening of bubble generator 7 by the road, the modification oil vacuole formed in foam production device 6 inputs in flotation column 8 eventually through bubble generator 7, achieves the function using the active oil vacuole of cold conditions as floatation carrier.

Preferably, the mesh plate of described foam production device 6 is the sheet material of the circular aperture being uniform-distribution with same diameter, different according to the size percent opening in aperture; Described foam production device 6 can change the mesh plate with different pore size and percent opening as required.

Beneficial effect: with the froth flotation of routine unlike, using active oil vacuole as in the flotation operation of floatation carrier, collecting agent is not directly add in liquid phase, but with the thin oil film wrapped of one deck at bubble surface, while oil film and mineral grain adsorb, together with bubble is also attached on mineral, decrease the work of adhesion in bubble mineralization process, substantially reduce induction time, improve flotation efficiency, decrease the amount of the collecting agent existed in water simultaneously, this reduces the adsorbance of collecting agent on gangue mineral, thus reduce the consumption of floatation process collecting agent.

Advantage: no matter existing oil vacuole manufacture method is all needed Oil-temperature control between 200 DEG C to 300 DEG C by the mode of heating evaporation again after flash distillation or atomization, and the manufacture of the active oil vacuole of this device can realize at ambient temperature, simple without the need to heating operation, not only reduce the power consumption of flotation and improve the security of floatation system.In addition, the active oil vacuole manufacturing system under normal temperature condition makes the use of water miscible surface additive become possibility, avoids the harm that water produces heater element, has widened the surfactant scope that can use.

Accompanying drawing explanation

Fig. 1 is the structure chart that the utility model is implemented.

In Fig. 1: 1, agitator, 2, peristaltic pump, 15, fluid flowmeter, 3, ultrasonic ultrasonic delay line memory, 4, mixing chamber, 5, air blast, 6, foam production device, 7, bubble generator, 8, flotation column, 9, feed pump, 10, agitator, 11, air compressor machine, 12 steam-water separators, 13, air accumulator, 14, gas flowmeter.

Fig. 2 is the schematic diagram of foam production device, and wherein mesh plate is the sheet material of the circular aperture being uniform-distribution with same diameter, different according to the size percent opening in aperture; Foam production device can change the mesh plate with different pore size and percent opening as required.

Detailed description of the invention

Below in conjunction with accompanying drawing, structure of the present utility model is further described:

A kind of coal slime flotation system based on the active oil vacuole of cold conditions as shown in Figure 1, this system comprises: agitator 1, peristaltic pump 2, fluid flowmeter 15, ultrasonic ultrasonic delay line memory 3, mixing chamber 4, air blast 5, foam production device 6, bubble generator 7, flotation column 8, feed pump 9, agitator 10, air compressor machine 11, steam-water separator 12, air accumulator 13, gas flowmeter 14, it is characterized in that: the oiliness collecting agent of normal temperature liquid state and surfactant are joined in agitator 1 by certain proportioning, making it mix through stirring; Adjustment peristaltic pump 2 revolution with certain flow velocity by confection pumping to ultrasonic ultrasonic delay line memory 3, liquid confection is atomized into micron-sized little mist pearl by ultrasonic ultrasonic delay line memory 3; The high-pressure drying air storage obtained after air compressor machine 11 and steam-water separator 12 process is in air accumulator 13; The atomization granule of confection is pulverized by pressure-air stream further at mixing chamber 4, the obtained air-flow containing suitable oil mist concentration; Air-flow containing mist of oil blows in foam production device 6 by air blast 5, and air-flow is by the keyhole formation modification oil vacuole on mesh plate; In bubble generator 7, produce negative pressure due to the jet of ore pulp, active oil vacuole is inhaled into flotation column 8 via the import of bubble generator 7; Low-order coal is wetting in agitator 10, to mix with water and form certain density ore pulp, be pumped in flotation column by feed pump 9; In flotation column, according to the difference of mineral particle surface character, active oil vacuole and the good low-order coal particle of floatability collide and mineralising, float and form head coal product, floatability is poor fails the tail coal of mineralising and the thin mud of high ash and stays in post, and finally being discharged by mine tailing mouth becomes tail coal product.

Claims (2)

1. the coal slime flotation device based on the active oil vacuole of cold conditions, comprise ultrasonic ultrasonic delay line memory (3), mixing chamber (4), air blast (5), foam production device (6), bubble generator (7), flotation column (8), air accumulator (13) and gas flowmeter (14), it is characterized in that, described mixing chamber (4) has two entrances, one of them entrance is connected with the outlet of ultrasonic ultrasonic delay line memory (3), another entrance is connected with the gas outlet of air accumulator (13) by gas flowmeter (14), the function of the air-flow produced containing suitable oil mist concentration is achieved in mixing chamber (4), the outlet of mixing chamber (4) is connected with the entrance of air blast (5) by the road, the outlet of air blast (5) is connected with the entrance of foam production device (6), the outlet of foam production device (6) is connected with the feeding opening of bubble generator (7) by the road, the modification oil vacuole formed in foam production device (6), eventually through in bubble generator (7) input flotation column (8), achieves the function using the active oil vacuole of cold conditions as floatation carrier.

2. a kind of coal slime flotation device based on the active oil vacuole of cold conditions according to claim 1, it is characterized in that, mesh plate in described foam production device (6) is the sheet material of the circular aperture being uniform-distribution with same diameter, different according to the size percent opening in aperture; Foam production device (6) can change the mesh plate with different pore size and percent opening as required.