新型大处理能力双侧进风跳汰分选技术  

A new jig separation technology with large processing capacity and double air inlet

作　　者：王志刚 庞卫东 常建勇 桂夏辉[1] 匡亚莉[1] 王章国[1] WANG Zhigang;PANG Weidong;CHANG Jianyong;GUI Xiahui;KUANG Yali;WANG Zhangguo(School of Chemical Engineering&Technology,China University of Mining&Technology,Xuzhou,Jiangsu 221116,China;Jin Yitong Science&Technology Beijing Co Ltd,Beijing 100083,China)

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]金易通科技(北京)股份有限公司,北京100083

出　　处：《采矿与安全工程学报》2020年第1期202-206,共5页Journal of Mining & Safety Engineering

基　　金：国家重点研发计划项目(2018YFC0604702)。

摘　　要：为了提高井下跳汰排矸工艺的处理能力和工艺指标,提出了双侧进风跳汰技术,研制出了宽度为4.30 m的双侧进风跳汰机,在地面选煤厂实现应用。通过原理分析、现场测试、浮沉组成试验、灰分检测试验等方法研究了双侧进风跳汰分选技术的主要性能指标。实验研究结果表明,该工业跳汰机处理80~0 mm无烟煤,单机最大能力处理为600 t/h,第1矸石段不完善度I1为0.08,第2矸石段不完善度I2为0.09,中煤段不完善度I3为0.14,数量效率为98.06%,正常工作条件下用水量为2.0 m^3/t原煤,第2矸石段及中煤段用风风压为0.029 MPa。双侧进风跳汰技术的应用,在保证较低风水用量的同时,有效增加了跳汰设备的单位宽度处理能力,提升了分选精度。To improve processing capacity and technical index of underground jigging and gangue discharge technology, double air inlet jigging technology was proposed in this study. A double air inlet jig with the width of 4.30 m was developed, which has already applied in a surface coal preparation plant. Main performance indexes of double air inlet jigging technology were studied by means of principle analysis, site test, float-and-sink test, ash test, etc. Experimental results show that jig capacity could reach 600 t/h per unit maximum when treating 80~0 mm anthracite. Imperfection(I1) of the first gangue section is 0.08, while imperfection(I2) of second gangue section is 0.09. The imperfection(I3) of middling section is 0.14, and its quantity efficiency is 98.06%. Under normal working conditions, water consumption of raw coal is 2.0 m^3/t. Air pressure of second gangue section and middling section is 0.029 MPa. On the premise of ensuring a lower air-water consumption, this double air inlet jigging technology could effectively increase jig capacity per unit width, improving separation accuracy.

关 键 词：跳汰 双侧进风 井下排矸 高效分选 

分 类 号：TD94[矿业工程—选矿]