Product Description
A Drum Mill for Coal Preparation
AGICO Coal Ball Mill uses steel balls to reduce raw coal to powder for cement kiln fuel preparation. In an air-swept arrangement, hot gas dries the coal and carries ground material from the drum.
AGICO combines mill equipment with process engineering to match the grinding stage to feeding, separation and collection. Selection starts with coal properties, required output and burner fineness, rather than motor power alone.
Product Advantages
Drying Within the Grinding Circuit
AGICO's coal mill brings hot gas into contact with the feed, combining moisture removal with coal grinding.
Steel Balls for Coal Grinding
AGICO's rotating drum lifts the grinding media. Impact and friction reduce coal particle size as the charge tumbles.
Airflow for Continuous Powder Removal
AGICO's air-swept arrangement carries ground coal through the outlet, linking the mill to downstream separation and collection.
Drive Components Matched to Duty
AGICO's mill drive combines a motor, reducer and gear transmission.
Working Process
From Metered Coal to Powder
Raw coal enters the rotating mill with hot gas. Steel balls grind the coal, and the gas stream carries ground material to separation and collection.
The Drive and Wear Components
The mill assembly includes the shell, liners, bearings, feeding and discharge devices, motor, reducer and gear drive. Inspection planning covers liner wear, ball charge, lubrication and the condition of the inlet and outlet connections.
Applications
Coal Powder for Kiln Firing
Pulverized coal is prepared for cement kiln firing. Coal properties and burner fineness guide the grinding duty, while the mill circuit supplies the required fuel powder.
Cement-Plant Fuel Preparation
Coal preparation connects raw-coal feeding, drying, grinding, separation and collection. The arrangement is matched to plant fuel demand, operating hours and the available hot-gas supply.
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Technical Parameters
| Drum specification (m) | Drum speed (r/min) | Capacity (t/h) | Feed size (mm) | Main reducer | Main motor (kW) | Total weight (t) |
|---|---|---|---|---|---|---|
|
Φ1.7×2.5 |
24.5 |
3–5 |
<25 |
ZD40 |
95 |
29 |
|
Φ2.2×4.4 |
22.4 |
8–9 |
<25 |
ZD60 |
250 |
46 |
|
Φ2.4×4.75 |
20.4 |
12–14 |
<25 |
ZD60 |
280 |
54 |
|
Φ2.4×(4.5+2) |
20.4 |
11–12 |
<25 |
ZD60 |
315 |
76 |
|
Φ2.6×(5.25+2.25) |
19.7 |
13–14 |
<25 |
ZD70 / MBY450 |
400 |
98 |
|
Φ2.8×(5+3) |
18.3 |
16–17 |
<25 |
ZD70 / MBY500 |
500 |
107 |
|
Φ3.0×(6.5+2.5) |
18.3 |
19–20 |
<25 |
ZD80 / MBY560 |
630 |
124 |
|
Φ3.2×(6.75+2) |
16.9 |
25–30 |
<25 |
JDX560 |
710 |
148 |
|
Φ3.4×(6+3) |
17.5 |
28–30 |
<25 |
JDX710 |
800 |
162 |
|
Φ3.8×(7+2.5) |
16.4 |
38–40 |
<25 |
MBY800 |
1250 |
215 |
Final parameters are selected for your coal properties, capacity, process, customization needs and site conditions. Contact AGICO's technical team to discuss your project.
Discuss Your Coal Grinding Project
FAQ
Which coal data should be supplied for selection?
Send AGICO the coal analysis, moisture, feed size, Hardgrove Grindability Index and required product fineness. Include the hourly fuel demand and planned mill operating hours so the grinding duty can be assessed.
Why can similar drum sizes have different motor ratings?
Published equipment series can use different internal arrangements and design duties. AGICO reviews the complete specification, including speed, output and drive details, when selecting a mill for the project.
What should be checked for an existing plant?
Provide AGICO with the current layout, foundation information, hot-gas source, fan and collection data, and available electrical supply. The mill and its surrounding equipment need to be considered together.
Which parts need attention during maintenance planning?
For an AGICO coal ball mill, the maintenance plan should cover liners, grinding balls, gears, bearings, seals and lubrication components. Equipment drawings and the parts list help identify the correct replacement items.
