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

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.