Cement 공업에 있어서 그 생산비의 대부분을 동력비가 차지하고 있는 실정에서 동력 를 절감하기 위하여 여러 연구자들이 유기물 분쇄조제를 액상접촉으로 시도하였으나 그 분쇄효과가 미약（10 % 내외） 하였기에 이에 저자는 기상접촉으로 분산시켜 불균일혼합접촉을 방지하고 더욱 분쇄온도를 cement 물성에 지장이 없는 100 ℃ 이하의 저비점 유기물 분쇄조제를 택하여 그 분쇄효과와 물성변화를 측정하였다.

Since the major expence of production in cement industry is the electric power cost, many scientists had researched in various ways for saving the electric power. This is an urgent problem because the electric power cost is getting more and more expensive these days. Cement clinker was taken as a sample of industrial materials. As one means of saving power, it was attempted to prevent the growth of secondary particles on liquid contacting system by using organic crushing aids such as secondary alcohol series, fats and resines. In this study the increase of crushing effect was investigated in gaseous contacting system with organic crushing aids, whose boiling points are below 100 ℃. Organic crushing aids that were used here are ethyl alcohol, methyl alcohol, acetone, benzene, diethyl-ether, and acetaldehyde in the concentration range from 0.05 to 0.5 % by weight. A continuous model in dry crushing was adopted with practical operating conditions for comparison. Computation of power saving was carried out with respect to the tendency of specific surface diameter of particles.