Flotation process design based on energy input and distribution

Energy-saving ability and high flotation efficiency are two important factors in the flotation process. In this investigation, a new concept for the flotation process design based on energy input and distribution was proposed, low energy was inputted early to recover easy-to-float materials, whereas high energy was inputted late to recover difficult-to-float materials. The flotation tests were conducted in an XFD 0.75 L laboratory-scale flotation machine. A comparison of flotation performance using constant power input and gradually increased power input was investigated. The flotation results indicated that low ash content, high flotation efficiency index, and energy-saving ability could be obtained by increasing power input step by step in the flotation process. The flotation process design based on different shaft speeds (1500, 1500, 1800, 1800, and 2400 r/min in different flotation periods) and an energy consumption of 1720.8 J is suitable for flotation performance of the coal samples in this study. (C) 2013 Elsevier B.V. All rights reserved.

节能能力和高浮选效率是浮选过程中的两个重要因素。在本次研究中，提出了一种基于能量输入和分布的浮选工艺设计新概念，即早期输入低能量以回收易浮物质，而后期输入高能量以回收难浮物质。浮选试验是在一台XFD 0.75L实验室规模的浮选机中进行的。对使用恒定功率输入和逐渐增加功率输入的浮选性能进行了比较研究。浮选结果表明，在浮选过程中逐步增加功率输入可获得低灰分、高浮选效率指标和节能能力。基于不同轴转速（在不同浮选阶段分别为1500、1500、1800、1800和2400转/分钟）以及能耗为1720.8焦耳的浮选工艺设计适用于本研究中煤样的浮选性能。（C）2013爱思唯尔有限公司。版权所有。