摘要
为了考察振幅对复合式干选机分选效果的影响,以25～0 mm粒级南非煤样为研究对象,应用复合式干法分选模型机系统,在其他参数不变的情况下,在振幅为2.6、2.8、3.0、3.2、3.4 mm条件下进行了分选试验。试验结果表明,精煤产率随着振幅的变大而减小,而尾煤产率则相反;振幅的变化对分选产品灰分有较大影响,综合绝对降灰量、降灰比和指标K值三项指标,以振幅为3.0 mm时分选效果最优。
In order to study the effect of amplitude on separation law of compound dry separator,using the compound dry separator model separating the coal sample with the size fraction from 25 mm-0 mm taken from South Africa.The separation tests were done under amplitudes of 2.6,2.8,3.0,3.2 and 3.4 mm and at same time the other separation parameters were not changed.The test result shows that the clean coal yield decreased with increase of amplitude,but the tailings yield was just the reverse.The change of amplitude also has big effect on ash content of clean coal,so combined with the three index of absolute value of ash reduction,ratio of ash reduction and K value,the best separation result obtained under the amplitude of 3.0 mm.
出处
《选煤技术》
CAS
2012年第5期6-9,共4页
Coal Preparation Technology
关键词
复合式干选机
分选效果
复合式干法分选模型机
振幅
精煤产率
产品灰分
compound dry separator
amplitude
separation result
compoud dry separator model
clean coal yield
prodct ash content
