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  Ball Mills
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The newly developed SAT Ball Mill has the same mechanical reliability as the traditional one, but a far lower power consumption.
The power consumption can be lower than 20 kWh/t for cement production. It is suitable for either setting up a new system or modifying an existing one.
Characteristics of SAT ball mill
• A patented SAT special balls amazingly increases the mill efficiency
• A unique Satarem's liner that has lifting and classying functions
• A special L/D ratio, much smaller than a traditional mill
• Single compartment design without a diaphragm
• A much larger diameter of inlet and outlet trunnions
• Better ventilation, and lower pressure drop
• Lesser the filling ratio, lesser the ball use comparing to a traditional mill
• With satarem’s high efficiency separator, the system runs more smoothly
• With the relatively higher ventilation speed in the mill, the materials are moving faster
• A better option for the increase of capacity and the saving of power compared to a roller press system
Capacity: Power consumption under 350m2/kg Blaine(kWh/T)
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Closed Circuit |
Roller Press
(pre-grinding) |
Roller Press
(Semi-product) |
SAT Ball Mill |
| Ball Mill |
37.5 |
28 |
17.12 |
27 |
| Roll Press |
- |
4.8 |
9.6 |
- |
| Separator |
1.2 |
1.2 |
1.2 |
1.5 |
| Coarse Separator |
- |
- |
0.6 |
- |
| Separator Fan |
2.3 |
2.3 |
2.6 |
3.6 |
| Ventilation Fan |
0.8 |
0.6 |
0.5 |
0.8 |
| Auxiliary Equipment |
1.2 |
1.6 |
1.8 |
1.0 |
| Total Consumption(kWh/T) |
43.0 |
38.5 |
34.5 |
32.9 |
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| SAT Mill |
General Mill |
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• A relatively lower filling ratio
• A smaller total ball weight
• A larger mill diameter |
• A diaphragm dividing between large and small balls
• Too small balls in the second compartment |
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• Without a diaphragm, far more room can be used
• Under airswept discharge, the material layer is smaller
• Without ball coating or overgrinding phenomenon |
• A diaphragm reducing the room
• No materials around the diaphragm
• Easier overgrinding |
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• The more smooth the air flow, the less pressure drop
• The higher velocity inside the mill,
the more materials are taken out
• The much higher ventilation,
the lower discharged cement temperature |
• The less smooth air flow, the higher pressure drop
• The lower materials moving on, the worse
effect on the capacity and the power consumption
• The more heat generated without removal,
the higher discharged cement temperature |
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• The far larger L/D ratio and the higher speed
• The higher cascading motion, the higher impact force
• The unique Starem’s liners moving balls fast
• Maximum utility of the ball energy |
• The relatively smaller L/D ratio
• The lower cascading motion, the lower impact force
• The lower cascading motion containing staying layers
• Without maximum utility of the ball energy |
| SAT Special balls |
Ordinary Shape Balls |
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| Large Contact Area |
Small Contact Area |
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| Satarem’s Energy Saving Liners |
Ordinary Liners |
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| The Conventional ball mill uses the ordinary shape balls. The Contact areas between balls, liners and materials are very small. Clearly, a great amount of energy is wasted on useless work. Based on these, SAT Special balls can immensely expand the contact area. At the same time, the impact and grinding ability are dramatically improved. Obviously, SAT grinding systems are far better than the conventional ones in terms of power saving. |
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