21世纪高效干法选煤技术的发展

Development of High Effective Dry Coal Beneficiation Technology in 21st Century

详细讨论了洁净煤分选技术的意义和现状、各种干法分选方法的特点以及空气重介质流化床选煤技术的优越性 .空气重介质流化床选煤技术具有分选精度高、投资少、环境污染小、分选密度调节范围宽等特点 .在该技术发展的基础上 ,在小于 6 mm细粒级振动流化床、三产品双密度层流化床、大于 5 0 mm大块煤深床型流化床以及小于 1 mm微粉煤摩擦电选技术等方面也取得了可喜的进展 .在 2 1世纪的洁净煤技术发展中 ,3 0 0到 0

The significance and present situation of clean coal technology (CCT) were discussed. Characteristics of different dry coal beneficiation methods and advantages of air dense medium fluidized bed (ADMFB) were introduced. The ADMFB technique is of high precision, low investment, wide range of density, and no environment pollution. It has made an encouraging progress in the beneficiation methods of fine coal (less than 6 mm) vibrated fluidized bed, three-product-and-double-density fluidized bed, large sized coal (more than 50 mm) deep fluidized bed, and triboelectric cleaning for mini-size (less than 1 mm) coal. For the 21st century, the research on a high effective dry beneficiation of coal with a wide range of size (300 mm to 0 mm) is very important.