煤泥浮选过程能量输入优化

为探究浮选过程与能量输入的关系,设计了在不同浮选时段（0.5,0.5,1.0,1.0,2.0 min）驱动电机转速为1 500,1 800,2 100,2 400,2 700 r/min的情况下,进行逐步增加输入功率的浮选过程优化试验,并通过能量测试系统对浮选功耗进行测定。结果表明：在浮选初始阶段,转速越大,浮选速率越快,精煤可燃体回收率越高,精煤累积灰分也越高;在低能量输入的情况下精煤质量相对较高,但精煤可燃体回收率相对较低;在不同能量输入的浮选过程中,驱动电机转速按浮选时段设计为1 500,1 500,1 500,1 500,2 400 r/min时,其精煤累计灰分最低,且可燃体回收率较高...

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Bibliographic Details
Published in煤炭学报 Vol. 37; no. 8; pp. 1378 - 1384
Main Author 李延锋 张晓博 桂夏辉 赵闻达 吴朝龙 谢彦君
Format Journal Article
LanguageChinese
Published 2012
Subjects
功率
浮选过程
煤泥
能量输入
转速
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Summary:为探究浮选过程与能量输入的关系,设计了在不同浮选时段（0.5,0.5,1.0,1.0,2.0 min）驱动电机转速为1 500,1 800,2 100,2 400,2 700 r/min的情况下,进行逐步增加输入功率的浮选过程优化试验,并通过能量测试系统对浮选功耗进行测定。结果表明：在浮选初始阶段,转速越大,浮选速率越快,精煤可燃体回收率越高,精煤累积灰分也越高;在低能量输入的情况下精煤质量相对较高,但精煤可燃体回收率相对较低;在不同能量输入的浮选过程中,驱动电机转速按浮选时段设计为1 500,1 500,1 500,1 500,2 400 r/min时,其精煤累计灰分最低,且可燃体回收率较高;在总能量输入相同或相似的情况下,浮选前期阶段采用低能量输入,后期阶段采用高能量输入,有利于保证精煤质量以及提高精煤回收率。
Bibliography:LI Yan-feng, ZHANG Xiao-bo, GUI Xia-hui, ZHAO Wen-da ,WU Chao-long, XIE Yan-jun （School of Chemical Engineering,China University of Mining and Technology ,Xuzhou 221116,China）
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ISSN:0253-9993