水泥辊压机半终粉磨系统的提产改造

Productivity Improvement of the Semi-final Grinding System of Cement Roller Press

分析了水泥辊压机半终粉磨系统料流调整不及时、不准确,侧挡料板不能保证辊压机饱和做功,Ⅴ型选粉机通风截面小,涡流选粉机冷风阀调整不便,辊压机做功效率低等问题。通过采用新型自动控制喂料机构,设计安装Ⅴ型选粉机溜子布料锥,增加补风口,对水泥磨进行整体倒仓处理等措施,辊压机做功效率可达90%,P·O42.5水泥产量可稳定在190t/h以上,工序电耗实际降低2.21kW·h/t,系统运行稳定,研磨效率高。

In the practical production of cement, the semi-final grinding system of the cement roller press exhibits a lot of problems, including the untimely and inaccurate material flow adjustment,incapability of a side baffle to guarantee the saturated work of the roller press, the limited size of the ventilation section of the Ⅴ-type powder separator, inconvenience in the adjustment of cold air valve of eddy current separator, as well as the low working efficiency of the system. With careful analyses, a new type of automatic control feeding mechanism is adopted, a Ⅴ-type powder concentrator is designed and installed, the ventilation channels are increased, and the overall dumping procedure is employed. All these optimizations lead to an increase in the working efficiency of the roller press,which finally could reach up to 90%, with stable performance. The output of P·O 42.5 cement can be stabilized above 190t/h, and the power consumption of the process is actually reduced by 2.21kW·h/t.