煤用回收净化介质磁选机的应用现状及分析

Application present situation and analyses of heavy medium recovery and purification by permanent magnetic separator in coal preparation

本文通过我国重介质选煤工业中几种应用广泛的典型煤用湿式永磁磁选机的回收效净化效果和主要性能对比,考察了国内煤用湿式回收净化重介质永磁磁选机的应用技术现状,在此基础上指出了国内煤用湿式回收净化重介质磁选机在应用和研究方面存在构件使用寿命短、磁系设计创新不足及NdFeB磁体装配困难、关键技术参数对工艺变化的适应性弱、研究偏重应用等一些问题,并相应提出其今后会朝大型化、专用化、深层次、多角度发展的趋势。

Through comparisons of the performance and efficiency of several typical wet permanent magnetic separators which are widely used in China’s heavy medium coal preparation industry ,application status of heavy medium recovery and purification by domestic wet permanent magnetic separators was investigated in the article .Based on these analyses this article points out some application and research problems including short life span of components ,lack of magnetic system designing innovation and difficulties in assembling NdFeB magnet ,weak flexibility of the key technical parameters to process change , more emphasis on application .And trends of the future development toward large scale ,specificalization , depth ,multi angle are accordingly put forward .