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Specifications
ball mill has features rational structure & high grinding efficency; it is an ideal equipment for pulverized coal preprationφ3.8×7.5m Air swept mill(raw mill)
(edge drive)
Technical parameters and performation
Specification φ3.8×7.5m
Productive capacity 85t/h(for grinding mid-hardness limestone)
Inlet grain size ≤20mm(90% passing)
inlet water content ≤5%
Outlet water content ≤1%
Inlet air temperature 300°C(Max350°C)
Outlet air temperature 60-80°C
Finished products fineness ≤12-14% (80μscreening residue)
Mill rotating speed 16.7r/min
Main motor(Jiangxi Motor Factory)
Model YR1400-8/1430 power 1400kW rotating speed 740r/min
Voltage 10KV
Main gear box(Nanjing Gear Box)
(1)Model MBY800
(2)Transmission power 1400KW
(3)Transmission ratio I=5.6
Auxiliary motor
(1)Model Y200L2-6
(2)Motor power 22kW
(3)Motor rotating speed 970r/min
(4)voltage 380V
Auxiliary reducer
(1) Model YNS620-90 ⅡR
(2) Speed ratio I=90
(3) Grinding table speed 0.25r/min
Cooling ways water cooling
Water volume for main bearing 2×2m3/h
Main bearing lubrication device(thin oil station) NC-25S
HP pump motor model Y100L1-4
HP pump motor power 2.2kW
HP pump nominal pressure 32MPa
HP pump nominal flow 3.5l/min
LP pump motor model Y90L-4
LP pump motor power 1.5KW×2(one standby)
LP pump nominal pressure 0.5MPa
LP pump nominal flow 25l/min
Cooler water volume 1.5m2/h
Pressure difference sensor CS-V-0.1 55kW 220V 0.25A
Oil electric heater SRY2-220/2 2KW×3
Equipment weight 182t(except grinding media)
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