摘要
针对同忻煤矿在线监测井下毛煤灰分的应用需求,基于灰分与煤的天然放射性呈正相关的原理,通过采用高射线透过率材料的隔爆型矿用射线探测器、由隔离变压器供电的光纤通讯分析仪表以及由内外屏蔽实现低本底水平的环境屏蔽体,完成了井下矿用无源灰分仪的设计,并将之应用于同忻煤矿井下毛煤的灰分监测。实践表明:矿用无源灰分仪应用效果良好,测量值与人工化验值的均方根误差低于1.26%;利用灰分监测数据指导井下采煤生产,使毛煤年平均灰分下降了0.76个百分点,达到了从源头加强煤质管控的目的。
In order to meet the needs of Tongxin Mine for online monitoring of ash of run-of-mine coal under-ground,a mine passive ash meter is developed and put into service.The ash meter is designed based on the prin-ciple that coal ash is directly,correlated with natural radioactivity,and through the use of flameproof-ray de-tector made materials featuring a high radiation transmittance,the optical fiber communication analysis device powered by shielded transformer,and the both internally and externally shielded cost-effective environmental screening structure.Practice shows that the meter works remarkably well;compared with the analytical value,the root-mean-square error of the measured value is smaller than 1.26%;and with the use of the measured data to direct mining operations,the ash of run-of-min coal is seen to be decreased by 0.76 percentage points on an av-erage annual basis.The use of the ash meter has attained the objective of strengthening coal quality control at the source.
作者
辛伟
白云飞
XINWei;BAI Yunfei(Jinneng Holding Coal Industry Group Tongxin Coal Mine Shanxi Co.Ltd.,Datong 034400,China;Kaifeng Measurement&Control Co.Ltd.,Kaifeng,475000,China)
出处
《选煤技术》
CAS
2024年第2期64-67,共4页
Coal Preparation Technology
关键词
井下毛煤在线测灰
矿用无源灰分仪
隔爆型矿用射线探测器
光纤通讯分析仪表
环境屏蔽体
源头煤质管控
run-of-mine coal ash underground online monitoring
mine passive ash meter
flameproof y-ray de-tector
optical fiber communication analysis device
environmental shielding structure
coal quality control at source
作者简介
辛伟(1973-),男,山西大同人,工程师,从事煤质管理工作。E-mail:739826070@qq.com,Tel:15935218089;通讯作者:白云飞(1985-),男,河南开封人,高级工程师,从事核仪器仪表开发工作。E-mail:baiyunfei@kfckgs.com,Tel:15137838259。
