风力选煤旋风除尘器内壁防冻粘涂层试验研究  

Experiment on antifreeze adhesive coating on inner wall of wind-powered coal preparation cyclone dust collector

作　　者：陈坤 胡丙升 宋俊超 贾金鑫 CHEN kun;HU Bing-sheng;Song Jun-chao;JIA Jin-xin(CCTEG Tangshan Research Institute Co.,Ltd.,Tangshan 063000,China;Coal Preparation Engineering and Technology Research Center of Hebei Province,Tangshan 063000,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063000 [2]河北省煤炭洗选工程技术研究中心,河北唐山063000

出　　处：《煤炭工程》2022年第S01期191-194,共4页Coal Engineering

摘　　要：风力选煤往往应用于高寒缺水地区,冬季气温低,昼夜温差大,煤在风选机床面上振动导致内能增加,煤中水分蒸发导致除尘器内部湿度较高,在遇到除尘器内壁时,往往出现冻粘现象,导致除尘器堵塞,除尘效率下降,为了解决上述问题,选取了六种常见的材料镶嵌在旋风除尘器的内壁,通过实验证明聚四氟乙烯材料作为内壁效果较好,能够长时间保持除尘器内壁冻而不粘,大大降低了除尘器内壁由于冻粘导致除尘器内部堵塞,进而导致除尘效率下降的概率。Wind coal preparation is often used in cold and water-scarce areas.The temperature is low in winter and the temperature gap between day and night is large.The vibration of coal on the surface of the wind separation machine leads to the increase of internal energy,and the evaporation of water in the coal leads to the high humidity inside the dust collector.Six kinds of common materials were selected to be embedded in the inner wall of the cyclone dust collector.The experiment proved that the PTFE material as the inner wall of the cyclone dust collector has a better effect and can keep the inner wall of the dust collector frozen for a long time without sticking,which greatly reduces the probability of the inner wall of the dust collector blocked due to the freezing sticking,which brings down the dust removal efficiency.

关 键 词：旋风除尘器 冻粘 除尘效率 聚四氟乙烯 

分 类 号：TD94[矿业工程—选矿]