chapter - 1 introduction - Meghalaya State Pollution Control Board

Hills Cement Co. Limited.
usually selected according to the wear characteristics of the material.
Improved balls and liners made of high chromium steel is one such
material but other materials are also possible. Other improvements include
the use of improved liner designs, such as grooved classifying liners.
These have the potential to reduce grinding energy use by 5- 10% in
some mills, which is equivalent to estimated savings of 1.8 kWh/ton
cement.
6. 6 PLANT-WIDE MEASURES
1. Preventative Maintenance-
2. High-Efficiency Motors and Drives- Adjustable or Variable Speed
Drives
3. Compressed Air Systems-
Maintenance of Compressed Air Systems-
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lowest possible inlet temperature.
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them every 400 hours of operation.
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Rotary screw compressors generally start with their air lubricant
separators having a 2 to 3 psid pressure drop at full load. When this
increases to 10 psid, change the separator.
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solids), flow, and temperature. Clean and replace filters and heat
exchangers per manufacturer’s specifications.
4. Reduce Leaks-
5. Reducing the Inlet Air Temperature- Maximize Allowable Pressure
Dew Point at Air Intake
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