The present study illustrates the effect of physical (thermal) and chemical surface treatment on the separation of the coal-quartz synthetic mixture in a tribo-electrostatic separator. The work also reports the effect of applied voltage and splitter position on the tribo-electrostatic separation of surface treated and untreated samples. Different reagents used in chemical conditioning of the synthetic mixture are kerosene, acetic acid, acetone, ethanol, phenol, toluene, and aniline. The study establishes that both chemical and heat treatment improves the tribo-electrostatic separation efficiency of coal and quartz particles. The applied voltage and splitter position affect the product grade and yield of treated and untreated samples. The ash removal and combustible separation efficiency of the synthetic mixture improved after chemical conditioning of the synthetic mixture with ethanol, acetone, acetic acid, and aniline. However, aniline treatment has produced the best separation result. It is possible to achieve 9 and 14% ash clean coal with 40% yield each from 53% ash synthetic mixture at 15 kV applied voltage after aniline and heat treatment, respectively. The ash removal and combustible separation efficiency of the tribo-electrostatic separator for the aniline and heat-treated synthetic mixture are 96, 60% and 90, 70%; respectively.

本研究说明了在摩擦静电分离器中物理（热）和化学表面处理对煤-石英合成混合物分离的影响。该工作还报告了施加的电压和分离器位置对表面处理和未处理样品的摩擦静电分离的影响。用于合成混合物化学调节的不同试剂是煤油，乙酸，丙酮，乙醇，苯酚，甲苯和苯胺。研究表明，化学和热处理均可提高煤和石英颗粒的摩擦静电分离效率。施加的电压和分流器位置会影响处理和未处理样品的产品等级和产量。用乙醇，丙酮，乙酸和苯胺对合成混合物进行化学调节后，合成混合物的除灰和可燃分离效率得到改善。但是，苯胺处理产生了最好的分离效果。苯胺和热处理后，分别在15 kV施加电压下，由53％的灰分合成混合物可分别获得9％和14％的灰分洁净煤，且产率分别为40％。摩擦静电分离器对苯胺和热处理后的合成混合物的除灰和可燃分离效率分别为96％，60％和90％，70％。分别。苯胺和热处理后，分别在15 kV施加电压下，由53％的灰分合成混合物可分别获得9％和14％的灰分洁净煤，且产率分别为40％。摩擦静电分离器对苯胺和热处理后的合成混合物的除灰和可燃分离效率分别为96％，60％和90％，70％。分别。苯胺和热处理后，分别在15 kV施加电压下，由53％的灰分合成混合物可分别获得9％和14％的灰分洁净煤，且产率分别为40％。摩擦静电分离器对苯胺和热处理后的合成混合物的除灰和可燃分离效率分别为96％，60％和90％，70％。分别。