宁 夏煤业集团大武口洗煤厂建于1969年 ,设计入洗能力为350万t/a,入洗原煤来自石炭井一矿、二矿和乌兰矿。入洗原煤通过火车运到大武口洗煤厂 ,煤质部门在火车上按国标采取煤样 (在火车顶部按三点采样 )。由于种种原因 ,所采取的煤样的代表性不够准确。为此 ,设计了一种带式输 Ningxia Coal Industry Group Dawukou Coal Preparation Plant was built in 1969, designed to wash capacity of 3.5 million t / a, into the washing of raw coal from the Carboniferous I, II mine and Wulan mine. Washed coal shipped through the train to Dawukou coal washing plant, coal quality department in the train to take a coal sample according to national standard (at the top of the train by three sampling). Due to various reasons, the representativeness of coal samples taken is not accurate enough. To this end, designed a belt conveyor