Abstract: Roller mill is a kind of grinding equipment of the grinding equipment for 80 years. It has been widely used in cement, electric power, metallurgy, chemical industry, and nonmetallic mine etc. Since the 1960 s, roller mill was used in cement industry, due to its remarkable effect of energy saving, soon it attracted people's attention and interest. Nowadays, the usage proportion of raw material, slag , coal grinding roller are greatly more than the ball mill, and 30% of cement clinker are roller mill too. According to the cement grinding technology and material bed grinding mechanism analysis, the conclusion is that roller grinding mill system will be further developed in China's cement industry. Finally, it presents that it should strengthen the grinding mechanism and the roller mill's research contents.
