raw materials are normally ground to finenesses between 10% and 15% residue on a 90 micron sieve to attain a sufficiently large passage area for drying air, hall mills for raw grinding generally have a greater diameter and are shorter than cement mills. cement grinding the specific power Read more

when dry grinding is applied, the grinding installation serves the double purpose of grinding and drying. the most economical and simple installations are obtained by using the kiln exhaust gas for the drying process, and carrying out the process in one machine. the main factors influencing the Read more