The mechanical agitating flotation machine relies on a rotating impeller (also called a rotor) and a fixed rectifying device (also called a stator, a diffuser, a flow plate, etc.) that cooperates with the impeller to disperse the air into bubbles, and at the same time complete the slurry agitation and stabilization liquid. The role of the face. According to the gas supply mode, it can be divided into self-suction type and pressure type. The former draws in air from the atmosphere, so the impeller is in a negative pressure state, and it is possible to design a model that can inhale the slurry and foam products from the outside of the tank with the pneumatic impeller. The latter is supplied by a blower (air supply pressure of 15 to 40 kPa), and the impeller is positively pressurized, making it impossible to self-absorb.
The air press-in and air-exit flotation machines rely on a dedicated aerator to generate air bubbles, and the ore particles are suspended by the kinetic energy when the slurry enters the tank and the agitation generated when the bubbles rise. In an air press-in flotation machine, compressed air (whose pressure is determined by the inlet hydrostatic pressure) generates bubbles through a porous medium or a gas riser, that is, the slurry is not pressurized and the air is pressurized. In the air-precipitating flotation machine, the slurry is injected into the tank after being pressurized, and the air is sucked or pressed into the slurry mixture to be dispersed into bubbles, that is, the slurry is pressurized, air pressurized or not pressurized. In this flotation machine, the air originally dissolved in the slurry is selectively precipitated on the surface of the hydrophobic ore particles in a microbubble due to a sharp drop in pressure during the high-speed ejection of the slurry from the nozzle. This kind of microbubble is a good activator, which can greatly improve the adhesion speed and firmness of the ore particles and bubbles. According to the structure of the slurry mixing chamber, this type of flotation machine can be divided into two types: swirling type and jet type. The mixing chamber of the cyclone flotation machine is similar to the cyclone. The slurry enters the mixing chamber along the tangential line, and the air is pressed in from the center tube to disperse the air into bubbles under the rotating motion. The mixing chamber of the jet flotation machine is similar to the Venturi tube, in which the slurry is ejected through a nozzle where air drawn from the periphery is cut into air bubbles.
A vacuum flotation machine is a special case. It relies on a vacuum pump to pump air to precipitate dissolved air in the slurry to produce microbubbles. The machine is complex in structure and small in aeration, and has been eliminated in the mining industry.
There are dozens of flotation machines produced at home and abroad. According to the above principles, the mechanical structure is selected.
In metal mining is the most widely used mechanical flotation machine, this chapter will be highlighted.
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Technical Data:
Model
No.
TTAC-07HCWa
TTAC-12HCWaS
TTAC-18HCWaS
TTAC-40HCWaS
TTAC-70HCWaS
Type
Vertical
Vertical
Vertical
Horizontal
Horizontal
Cooling capacity
kW
7.00
12.00
18.00
40.00
70.00
Heating capacity
kW
7.70
13.50
19.50
45.00
77.00
Electric Heating
kW
3.00
4.00
6.00
8.00
15.00
Rated cooling power input
W
2550
4150
7000
17500
30200
Rated heating power input
W
2650
4450
8500
18500
31400
Rated cooling current input
A
12.2A
7A
11.7A
29.5A
51.1A
Rated heating current input
A
12.7A
7.5A
13.2A
31.2A
53.0A
Evaporating side airflow
m3h
1000
2000
3000
5500
5500
Condensing side airflow
m3h
3500
5000
10000
22000
22000
Air pressure
Pa
200
200
200
200
200
Compressor MFG
GMCC
PANASONIC
PANASONIC
PANASONIC
PANASONIC
Evaporating side Noise
dB(A)
≤40
≤45
≤48
≤52
≤52
Condensing side Noise
dB(A)
≤55
≤60
≤65
≤70
≤72
Net Weight
kg
125
200
260
380
780
Dimension (L x W x
H))
mm
740*620*1120
835*735*1275
930*850*1380
2100*1100*1210
2800*2100*1210
Aircraft Ground Service & Maintenance Air Conditioner
Aircraft Ground Service & Maintenance Air Conditioner, Airplane parking Air Conditioner, Aircraft Hangar Air Conditioner, Airport Service Air Conditioner
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