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中文摘要：
为了提高微粉煤摩擦电选脱硫降灰的效果,采用表面改性的方法对微粉煤进行预处理,并使用旋转摩擦电选机对其分选。试验结果表明,当改性剂选用煤油、改性剂用量为10169 g/t以及改性时间为5s时,微粉煤旋转摩擦电选效果最佳,可燃体回收率、脱灰率以及脱硫率分别为44.16%、80.96%和73.36%,表面改性后精煤产率提高了约5%、精煤灰分降低了约3%、精煤硫分降低了约0.4%。分析对比改性前后电选效果认为,表面改性能显著强化微粉煤旋转摩擦静电分选的脱硫降灰效果。
英文摘要：
The authors preprocessed fine coal by using surface modification method and used rotation friction electricity separation in order to improve effects of fine coal friction electrostatic separation desulfurization and ash reduction. The test results showed that when the modifier was kerosene with 10169g/t dosage and 5s modification time, the effects of fine coal rotary friction e- lectric separation were best; combustible recovery, deashing and desulphurization values were 44.16% 、80.96 %、、70.36%; after surface modification, the clean coal productivity increased 5%, clean ash decreased 3% and the sulphur content of clean coal decreased 0.4%. According to com- parative analyzing electrostatic separation before and after surface modification, surface modifica- tion performance can significantly enhance the desulfurization and deashing effects of fine coal with rotary friction electric separation.
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