前言 庞庄选煤厂入洗原煤为一年60万吨,工作制度为:水洗系统一年300天生产,每天二班、浮选系统一年300天生产,每天三班工作。控制装置七四年年底在天津煤矿专用设备厂进行出厂调试,七五年年底以弱电就地解锁方式系统投入运行,七七年三月五号集中控制方式正式投入运行。几年来运转正常,达到了设计的予期效果。 Pangzhuang Coal Preparation Plant pretreatment of raw coal 600,000 tons a year, the working system is: washing system 300 days a year production, two shifts per day, flotation system 300 days a year production, three shifts per day. At the end of 1974, the control device was commissioned at Tianjin Coal Mine Special Purpose Equipment Factory by the end of the year. At the end of 1975, the system was put into operation with the weak-earth in-place unlocking mode. The centralized control mode was officially put into operation on March 5, The past few years to work properly, to achieve the desired effect of the design.