屯兰选煤厂HMDA-6滚筒磁选机滚筒端盖改造实践

Application of the HMDA-6 drum magnetic separator after remoulding of its end cover at Tunlan Coal Preparation Plant

针对HMDA-6滚筒磁选机运行中滚筒端盖频繁磨损使其内部磁极损坏的问题,在对其结构组成、工作原理、技术参数分析的基础上,结合现场实际情况和应用经验,在滚筒端盖处涂抹小颗粒的耐磨颗粒胶涂层,以降低滚筒端盖的磨损程度。生产实践表明:在对滚筒端盖改造后,其未出现被磨烂的情况,更换次数明显减少,防护效果明显提高,职工劳动强度降低,设备运行正常,并产生了一定的经济效益。

For avoiding the damage of the internal magnetic poles of the HMDA-6 drum magnetic separator in operation due to frequent wearing out of the separator＇s end cover,work is made on the renovation of the end cover based on the result of an analysis of the structural design,working principle and technical parameters of the separator,as well as the specific working condition and the experience gained in separator operation. The remoulding work involves the application of fine-grained wear-resistant gelled coating onto the end cover since the adoption of the method,no phenomenon of wear and tear of the end cover has been observed,significantly reducing,as a result the cover replacement work. Because of the better protection performance of the end cover,reduced labour intensity and trouble-free operation of the magnetic separator,a favourable economic result has been achieved.