摘要
为了预测分级浮选精煤最高的产率,根据等λ原则的预测方法,运用最小二乘法拟合煤泥的浮物累计曲线、边界灰分曲线计算模型,采用正交试验对计算结果进行煤泥分级浮选试验验证,结果表明:当+0.25mm浮选精煤灰分为13.74%,-0.25mm浮选精煤灰分为12.55%时,浮选精煤总产率最高,总灰分为12.95%,与计算结果基本一致;当+0.25mm浮选精煤灰分为14.70%,-0.25mm浮选精煤灰分为13.47%时,浮选精煤总产率最高,与计算结果也基本一致;等λ原则适用于煤泥分级浮选,可以获取最高浮选精煤产率。
In order to predict the maximum yield of clean coal in classified flotation,the prediction method based on the equalλprinciple was adopted,and the cumulative floats curve and boundary ash curve of coal slime were fitted by the least squares method.Then,the orthogonal test was used to verify the calculation results of classified flotation of coal slime.The results showed that,when the ash contents of+0.25 mm and-0.25 mm flotation clean coal were 13.74% and 12.55%,the total yield of flotation clean coal was the highest,and the total ash content was 12.95%,which was basically consistent with the calculation results.When the ash contents of+0.25 mm and-0.25 mm flotation clean coal were 14.70% and 13.47%,the total yield of flotation clean coal was the highest,which was basically consistent with the calculation results too.The equalλprinciple was applicable to classification flotation of coal slime,and the maximum yield of flotation clean coal can be obtained.
作者
陈鹏
白新伟
石开仪
潘东
王成勇
CHEN Peng;BAI Xinwei;SHI Kaiyi;PAN Dong;WANG Chengyong(School of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui,Guizhou 553004,China)
出处
《矿业研究与开发》
CAS
北大核心
2020年第5期139-143,共5页
Mining Research and Development
基金
国家自然科学基金资助项目(51504134)
矿物加工工程重点支持学科项目(黔学位合字[2016]24号)
贵州省教育厅基金项目(黔教合KY字[2017]263号,270号)
贵州省煤炭绿色发展协同创新中心项目(黔教合协同创新字[2016]02)
六盘水师范学院硕士点培育项目(LPSSYSSDPY201702).
关键词
煤泥
分级浮选
最高产率
等λ原则
正交试验
Coal slime
Classified flotation
Maximum yield
The equalλprinciple
Orthogonal experiment
