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| 1 | Amenability to dry processing of high ash thermal coal using a pneumatic table显示文摘High ash thermal coal from India was used to conduct the dry processing of fine coal using a pneumatic table to evolve a techno-economically novel technique. The fine as-received sample having 55.2% ash was subjected to washability studies at variant densities from 1.4 to 2.2 to assess the amenability to separation. The experiments were conducted using a central composite design for assessing the interactive effects of the variable parameters of a pneumatic table on the product yield and ash content. The performance of the pneumatic table was analyzed in terms of clean coal yield, recovery of combustibles,separation efficiency(E sp) and useful heat value of clean coal. The combustibles of clean coal obtained through a single stage operation at 35% and 38.7% ash were 40% and 63% respectively. However, the two stage processing was more effective in reducing the ash content in the clean coal. The rougher concentrate generated at higher ash level was subsequently processed in different conditions at 35% ash level, and 58% combustibles could be recovered. Hence, two stage processing increases the combustibles by 18 units and the useful heat value of clean coal increases from 1190 kcal/kg to 3750 kcal/kg. | Dey Shobhana Gangadhar B. Gopalkrishna S.J. | 2015 | International Journal of Mining Science and Technology2015，25，6： | 2 |
| 2 | 气固磁稳定流化床屈服应力的实验研究显示文摘气固磁稳定流化床是分选6~1mm细粒煤的有效手段,屈服应力对气固磁稳定流化床的稳定性和被分选颗粒的运动具有重要影响.采用拉板法,以0.074~0.045mm磁铁矿粉为加重质,对床层的屈服应力进行了研究.结果表明,磁稳定流化床的屈服应力是磁场强度、床层深度和表观气速的函数,分别随磁场强度及床层深度的增加而增大,随流化气速的增大而减小,磁场强度对屈服应力的影响最大,床层深度次之,表观气速影响最小.构建了3个因素对屈服应力的单因素作用模型及综合作用模型,为气固磁稳定流化床分选6~1mm细粒煤提供了理论基础. | 宋树磊 赵跃民 骆振福 唐利刚 | 2011 | 中国矿业大学学报2011，40，6： | 2 |
| 3 | Enrichment of carbon recovery of high ash coal fines using air fluidized vibratory deck separator显示文摘 | Laxmikanta Sahu Shobhana Dey | 2017 | International Journal of Coal Science & Technology2017，4，3： | 2 |
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