三质体智能高频细筛在选煤厂粗煤泥回收工艺中的应用  

Application of the intelligent 3-mass high-frequency fine screen in the process for recovery of coarse slime at coal preparation plant

作　　者：卢志明 呼得喜 张明刚 王磊[3] LU Zhiming;HU Dexi;ZHANG Minggang;WANG Lei(CCTEG Tangshan Research Institute Co.Ltd.,Tangshan 063012,China;Wangwa Coal Preparation Plant,Ningxia Wangwa Coal Industry Co.Ltd.,Guyuan 756500,China;Xipang Coal Preparation Plant of Dongpang Mine,Jizhong Energy Resources Co.Ltd.,Xingtai 054201,China)

机构地区：[1]中煤科工集团唐山研究院有限公司,河北唐山063012 [2]宁夏王洼煤业有限公司王洼选煤厂,宁夏固原756500 [3]冀中能源股份有限公司东庞矿西庞选煤厂,河北邢台054201

出　　处：《选煤技术》2023年第6期89-94,共6页Coal Preparation Technology

摘　　要：粗煤泥的回收是选煤厂提质增效的关键环节。为了解决粗煤泥回收过程中的跑水、跑粗问题,确保粗煤泥的灰分、水分、回收率等工艺指标,基于三质体智能高频细筛设备特点,提出了将三质体智能高频细筛用于粗煤泥脱泥降灰、脱水、深度回收等工艺。应用实践表明,三质体智能高频细筛脱泥效率可达85%左右,有效地保证了筛上产品灰分、水分及回收率。通过与振动弧形筛、叠层高频振动细筛的比较,指出了三质体智能高频细筛在脱水、脱泥、粗煤泥回收以及可靠性、稳定性、适应性、大型化、智能化方面的优势,并提出了今后粗煤泥回收工艺向智能、高效、节能方向发展的目标。Recovery of coarse slime is a key process link for coal preparation plant to upgrade products and im-prove coal cleaning efficiency.In order to tackle the problems regarding run-off of water and passage of screen oversize through screenplate during coarse slime recovery process,and guarantee the separated coarse slime is up to the required indices in ash content,moisture content and recovery rate,a new process for making in-depth ash reduction,dewatering and recovery of coarse slime with the use of the intelligent 3-mass high-frequency fine screen is proposed,based on analysis of the characteristic of the said screen.Practice shows the desliming effi-ciency of the screen is as high as 85%,and its use can ensure that the screen overflow is well up to the desired indices as mentioned above;and the screen is far superior to the vibrating sieve bend and the stacked-up high-frequency vibrating fine screen in terms of dewatering desliming,of coarse slime recovery,reliability,stability,adaptability,large body size and intelligent level.Finally,it is pointed out that the future development of the coarse slime recovery process should be directed toward the goals of turning it into an intelligent,highly effi-cient and more energy-saving one.

关 键 词：粗煤泥回收 三质体智能高频细筛 精煤泥脱泥降灰 中矸煤泥脱水 粒度控制 

分 类 号：TD941.5[矿业工程—选矿] TD454