充气量和循环量对浮选柱气含率的影响研究 .pdfVIP

学兔兔 201 1年第2期 煤 炭 工 程 充气量和循环量对浮选柱气含率的 影响研究 王红新 ，夏文成 ，杨建国 ，王浩为 ，张泽琳 (1．上海大屯能源股份有限公司，江苏 徐州 221611； 2．中国矿业大学煤炭加工与高效清洁利用教育部重点实验室，江苏徐州 221116) 摘 要：浮选柱气含率的大小是影响浮选柱精矿回收能力和实际分选效果的重要参数之一。 文章探讨了充气量和循环量对浮选柱平均气含率和轴向气含率的影响。结果表明：在相同循环量 情况下，浮选柱内平均气含率随充气量增加而增加；在相同充气量情况下，浮选柱平均气含率随 循环量增加而减小；在较小循环量和较小充气量的情况下，轴向气含率呈现底部大于顶部；在较 大循环量和较大充气量的情况下，轴向气含率呈现底部小于顶部。 关键词：浮选柱；循环量；充气量；平均气含率；轴向气含率 中图分类号：TD942 文献标识码：A 文章编号：1671—0959(2011)02-0085-03 Study on aeration quantity and circulation quantity affected to gas content rate of floatation column WANG Hong—xin ，XIA Wen—cheng ，YANG Jian—guo ，WANG Hao—wei ，ZHANG Ze—lin (1．Shanghai Datun Energy Company Ltd．，Xuzhou 22161 1，China； 2．Ministry of Education$Key Lab of Coal Processing and nigh Efficient and Clean Utilization，China University of Mining mid Technology，Xuzhou，221116，China) Abstract：The gas content rate of the floatation column would be one of the key parameters affected to the concentrate recovery capacity and the actual separation effect of the floatation column．The paper discussed the aeration quantity and the circulation quantity affected to the average gas content rate and the axial gas content rate of the floatation column．The results showed that under the condition of the same circulation quantity，the average gas content of the floatation column would be increased with the aeration quantity increased．Under the same aeration quantity，the average gas content of the floatation column would be reduced with the circulation quantity increased．Under the lOW circulation quantity and the low