潮湿细粒煤复合式干法分选特性研究  

Separation characteristics of moist fine coal in a compound dry separator

作　　者：陈存强[1] 顾雷雨 周延明 汪义龙 冯来宏 曹睿 高利晶 刘海涛 唐海龙 CHEN Cunqiang;GU Leiyu;ZHOU Yanming;WANG Yilong;FENG Laihong;CAO Rui;GAO Lijing;LIU Haitao;TANG Hailong(Huaneng Coal Technology Research Co.,Ltd.,Beijing 100070,China;Huaneng Yunnan Diandong Energy Co.,Ltd.,Qujing 655508,China;Yanbei Coal Mine of Huating Coal Industry Co.,Ltd.,Pingliang 744100,China;China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]华能云南滇东能源有限责任公司,云南曲靖655508 [2]华能煤炭技术研究有限公司,北京100070 [3]华亭煤业公司砚北煤矿,甘肃平凉744100 [4]中国矿业大学,江苏徐州221116

出　　处：《煤炭工程》2024年第5期187-194,共8页Coal Engineering

基　　金：华能集团总部科技项目“基于井下智能选矸的长壁工作面架后回填绿色开采技术研究”(HNKJ20-H36)。

摘　　要：为研究潮湿细粒煤复合式干法分选效率,对潮湿细粒煤进行了振动强度和气速的单因素试验,结合RSM-BBD预测模型获得了最优参数;并探索了不同水分的原煤在不同分选时间内的分选效果,同时分析了气流对潮湿细粒煤分选过程的影响,并评价了分选效果。结果表明:随着分选时长的增加,分选效果明显提高,最大灰分离析度可达12.05。试验煤样在气速为0.78 m/s,振动频率为25 Hz,振幅为3 mm时达到最佳分选效果,此时可能偏差E=0.135 g/cm^(3),且在此条件下分选产品有很好的脱水效果,复合式干法分选可实现潮湿煤炭的提质。该研究可以对细粒煤炭的干法分选工艺提供理论和技术支持。To improve the efficiency of moist fine coal sorting and classification,a single-factor test of vibration intensity and air velocity was carried out in a compound dry separator to obtain the optimal parameters,and the separating effect of raw coal with different moisture in different separating duration was explored,while the influence of airflow on the separating process of moist fine coal was analyzed.The results show that with the increase of separating duration,the separating effect is obviously improved,and the maximum ash segregation degree is up to 12.05.The test coal samples reach the best separation effect at the air velocity of 0.78 m/s,the vibration frequency of 25 Hz,and the amplitude of 3 mm,and the separated products have good dewatering effect at this condition,and the dewatering effect of the concentrate coal is better,the possible deviation E=0.135 g/cm^(3).And the separated products have good dewatering effect under this condition,and the composite dry sorting can realize the quality enhancement of moist coal.

关 键 词：潮湿细粒煤 复合干选 灰分离析度 分配曲线 响应面法 

分 类 号：TD94[矿业工程—选矿]