摘要
鉴于现有湿法分选工艺在处理动力煤过程中存在的一系列问题,比较了不同排矸设备的技术特点和优缺点;介绍了各种煤炭干选工艺和技术的应用进展,论述了不同干选工艺和设备的技术特点和未来发展方向。动力煤干选以提高产品发热量、排除矸石及硫分为目的,具有产品不增加水分、分选成本低等优点。采用分级入选、块煤加介选、末煤干选、湿煤预处理浅度脱水再干选的双干提质、空气重介选等新工艺可以实现干选厂工艺流程的个性化设计,弥补传统FGX风选工艺和设备单一的局限性。建立先进、高效、经济、大型化的煤炭干选厂,开发分选精度高、处理能力大、能耗低、更低分选粒度下限的干选设备是煤炭干选厂的未来发展方向。
In view of the problems of wet process in coal preparation, technical features and advantages of different deshaling equipment were compared. Application progress of various coal dry separation process and technology was also introduced, and technical characteris- tics and future development direction of different coal dry separation process and equipment were discussed. The objective of power coal dry separation is to enhance clean coal product heating value and remove its refuse rock and sulfur content. There are many advantages such as no product moisture increase and low processing cost. With the new processes of classified separation,lump coal dry separation, fine coal dry separation, dual quality upgrading of pre-drying and dry separation process and air dense medium separation, process flowshe- et of coal dry preparation plants can realize custonized design, which makes up for the limitation of traditional single FGX dry coal cleaning process and equipment. It will be an inevitable tendency for the future dry coal preparation plant designers to develop high efficient, large scale, low energy consuming, lower efficient separation bottom size type dry separation process and equipment, and high-efficient, economi- cal,large scale coal preparation plants.
作者
夏云凯
李功民
XIA Yunkai;LI Gongmin(Tangshan Shenzhou Manufacturing Co. ,Ltd. , Tangshan 063001, China;Hebei Dry Coal Processing Equipment Engineering ＆ Research Center,Tangshan 063001 ,China)
出处
《洁净煤技术》
CAS
2017年第6期17-25,共9页
Clean Coal Technology
关键词
干法选煤
X射线智能分选
块煤干选
末煤干选
干燥-干选联合工艺
空气重介
coal dry separation
X- ray intelligent sorting
lump coal dry separation
fine coal dry separation
drying ＆ dry separation process
air dense medium separation
