the Lp content increases grindability decreases
However, the decrease in grindability also is related with the rate of clinker cooling.
With faster cooling rates, the Lp forms more glass, thus increasing the strength of the clinker
In this investigation,it was not possible to determine the cooling rates of the clinkers.
The relationship between the Lp contents of the clinkers used in this investigation and the grinding energy
consumption calculated by using the constants A and B given in Table 4 is shown in Fig. 5 for three different specific
surface areas (2800, 3400, and 4000 cm2/g).
The relationship between grinding energy requirement and Lp content can be described by a second-order polynomial (solidline).
The extremum points of the polynomial where the energy requirement is maximum increase linearly with increasing
fineness (20.22, 21.89, and 23.35 for 2800, 3400, and 4000 cm2/g, respectively).
However, for Blaine finenesses around 3000 cm2/g, the relationship between grinding energy and Lp content
can be approximated as a line where energy decreases with increasing Lp.