黑山露天矿低质煤干法重介质流化床分选研究  

Study on Low Quality Coal Separation in Heishan Open Pit Mine by Dry Dense Medium Fluidized Bed

作　　者：李琨 巴玉龙 冉登科 赵鹏飞 张博 LI Kun;BA Yulong;RAN Dengke;ZHAO Pengfei;ZHANG Bo(Xinjiang Energy Co.,Ltd.,CHN Energy,Urumqi 830002,China;Key Laboratory of Coal Processing and Efficient Utilization Ministry of Education,China University of Mining and Technology,Xuzhou 221116,China;School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]国家能源集团新疆能源有限责任公司,乌鲁木齐830002 [2]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116 [3]中国矿业大学化工学院,江苏徐州221116

出　　处：《煤炭技术》2023年第11期266-270,共5页Coal Technology

基　　金：国家重点研发计划青年科学家项目(2022YFC2905900);国家能源集团科技创新2030重大项目先导资助项目(GJNY2030XDXM-19-07.2)。

摘　　要：采用干法重介质流化床对黑山露天煤矿低质煤进行分选提质研究,阐释了流化气速、排料速度、分选时间等对床层流化与分选过程的影响规律,确定了最佳操作参数。对比各粒级煤炭分选效果,干法重介质流化床对80~6 mm各粒级原煤均具有明显分选效果,但随粒级减小,分选效果降低,其中80~25 mm原煤分选效果较好,25~13 mm次之,13~6 mm原煤分选可能偏差E=0.069 g/cm3。综合而言,干法重介质流化床分选技术对黑山露天矿低质煤分选提质效果良好,分选可能偏差为0.055。The dry dense medium fluidized bed separation system was used to study the separation and upgrading of low-quality coal in Heishan open-pit coal mine,and the influences of fluidization gas velocity,discharge speed and separation time on the fluidization and separation process of the bed were explained,and the optimal operating parameters were determined.Comparing the separation effect of each coal grade,the dry heavy media fluidized bed has obvious separation effect on all coal grades from 80 to 6 mm,but the separation effect decreases as the grade decreases,among which the separation effect is better for 80-25 mm raw coal,followed by 25-13 mm,and the possible deviation E is 0.069 g/cm3 for 13-6 mm raw coal.The possible deviation of comprehensive separation is 0.055.

关 键 词：低质煤 干法重介质流化床 流化气速 分选时间 

分 类 号：TD94[矿业工程—选矿]