成庄矿选煤厂流量限制点的分析及改造

分析了影响成庄矿选煤厂生产效率的因素,提出实现选煤厂高效生产的关键在于从系统流量的最大化入手,找出限制系统流量的关键设备并进行改造。依据网络最大流理论,通过对选煤厂生产系统设备网络的分析,得到了成庄矿选煤厂的流量限制点,即主输送带和307,308,309,310筛分设备。通过更换3套900 kW的驱动装置及配套变频器,选用型号YK3052的307,308筛子,选用型号2ZK3052的309,310筛子等措施,提升了主井胶带输送机的生产能力和筛子的处理能力。最后对选煤厂改造效果进行了分析,成庄矿选煤厂改造完成后,网络最大流可达1500 t/h,生产能力由原先的400万t/a提高至目前的804万t/a,节电5386.8万kWh/a。在不增加其他设备投资的情况下,选煤厂发挥了设备的最大潜能,为其它选煤厂的扩能改造提供了理论基础。 The analysis of influencing factors of coal preparation system show that,maximizing the flow rate could remarkably improve the production efficiency of Chengzhuang coal preparation plant.Based on the theory of net work maximal flow and the analysis of production system composition,find that the main conveyor belt and 307,308,309,310 screening equipments strongly influence the flow rate.Both conveying capacity of main belt conveyor and processing capacity of sieve are improved by adopting three sets of 900 kW driving devices and relative inverter,and using YK3052 model for screen 307,308,2ZK3052 model for screen 309,310.The results show that,after transformation,the maximum flow in networks is improved to 1500 t/h,the production capacity is increased from 4.00 million tons per year to 8.04 million tons per year,and electricity power is saved 53.868 million kilowatt per year.Without introducing other auxiliary equipments,Chengzhuang coal preparation plant maximizes the current equipments and would provide theoretical reference for the transformation of other coal preparation plants