香蕉型弛张筛3mm干法脱粉在寺河矿选煤厂的应用

Application of banana flip-flow screen on 3 mm dry fines removal in Sihe mine

为提高物料干法筛分效果，在论述香蕉型弛张筛工作原理和特点的基础上，分析了香蕉型弛张筛3mm干法脱粉技术在寺河矿选煤厂的应用情况。结果表明：香蕉型弛张筛处理量大，比圆振动弛张筛提高30％以上，可实现物料快速分层，提高透筛率；单台带煤量约320～350t／h；3mm筛下限上率3．2％，上层限下率23．1％．下层限下率21．3％；筛分效率达85％，对黏性成团物料具有更好的筛分效果；香蕉型弛张筛安装角度小，占用空间少，改造成本低，降低水耗、电耗、介耗；煤泥量、絮凝剂用量、凝聚剂用量分别减少11．25万、22．50、281．25t／a．增加经济效益5355．01万元。使用香蕉型弛张筛进行3mm深度筛分具有可行性。

To improve the efficiency of dry screening, discuss the application of banana flip-flow screen on 3 mm dry fines removal in Sihe mine on the basis of its working principle and characteristics. Its application effects show that, the screen has high treating capacity, which is over 30 percent than that of circular vibrating flip flow screen.The screen stratifys the material quickly and more material pass through the screen.The treating capacity for single machine ranges from 320 t/h to 350 t/h, the oversize rate of the 3ram undersize is 3.2 percent, the oversize rate of the upper layer is 23.1 percent,the undersize rate of the under layer is 21.3 percent,the screening efficiency is up to 85 percent with better screening effects for viscous conglobated material.The screen has many advantages such as small installing angle and less space occupation,low transformation, water, power and medium cost.The slime, coagulant, flocculant consumption reduce by 1. 125 × 10^5, 22.5,281.25 t/a.The mine increases economic benefits by 5.35501 × 10^7 ynan.It is feasible for using banana flip-flow screen on deep screening.