生料外循环辊磨技术及应用实例

Technology and Application Cases of External Circulation Roller Mill for Raw Materials

生料辊磨外循环技术是辊磨系统发展的新阶段。对生料辊磨系统进行外循环改造,节能效果显著,改造后其系统电耗与辊压机生料终粉磨系统相当。外循环辊磨生料终粉磨系统改造可以保留原辊磨主机的设备和基础,与新建辊压机生料终粉磨系统相比,可以节省约一半的投资,可达到与辊压机生料终粉磨系统相当的能耗指标。2018年,天津水泥工业设计研究院有限公司利用此技术进行了两个项目改造,实践表明,这种改造方案可以提高系统产量,降低生料细度,系统电耗与改造前相比降低了4kWh/t。

The external circulation technology of raw material roller mill is a new stage in the development of roller mill system.The external circulation reform of the raw material roller mill system can save energy remarkably.After the external circulation reform,the power consumption of the raw mill system is comparable to that of the raw material final grinding system of the roller press.The reform of external circulation roller mill of raw material final grinding system can retain the equipment and foundation of the original roller mill.Compared with modification of the raw material final grinding system with the new roller press,it can save about half of the investment and reach the energy consumption index equivalent to that of the raw material final grinding system of the roller press.In 2018,Tianjin Cement Industry Design&Research Institute Co.,Ltd.carried out two projects.Practice shows that this kind of modification can improve the system output,reduce raw mill fineness,and reduce the power consumption of the raw mill system by 4 kWh/t compared with that before the external circulation reform.