Cement Grinding Vertical Roller Mills Versus Ball Mills
80 years it was the predominant mill for grinding of raw materials and coal, and still today is the most used mill for cement grinding. ... cost of installation, cost and ease of maintenance, product quality, versatility, etc. ... adjustable dam ring (figure 4). a higher dam ring will result in a thicker grinding.Apr 01, mill differential pressure and dam ring height are constant. ⁎⁎ the kn/m 2 value is the pressure of the grinding roller applied onto the grinding table. the value accounts for the projected area of the roller onto the grinding table. the projected area consists out of the mean roller diameter multiplied with the roller width on the grinding.