This paper presents a simple new sensor for real-time monitoring of coal flotation. The sensor was developed based on measurement of the drag exerted by the overflowing froth onto a cantilever beam. The effectiveness of this sensor for flotation monitoring was demonstrated by an on-site trial in a coking coal flotation plant in Queensland, Australia. The trial was carried out using one of the full-scale column flotation cells in the plant for five days, with the froth depth being fixed at 1.0 m but frother dosage and aeration rate being varied over a wide range. The output of the drag sensor had a strong linear correlation with the clean coal yield (mass recovery), with the coefficient of determination being 0.97.

本文提出了一种用于实时监测煤浮选的简单新型传感器。该传感器是基于对溢出泡沫施加到悬臂梁上的阻力的测量而开发的。在澳大利亚昆士兰州一家炼焦煤浮选厂进行的现场试验证明了该传感器对浮选监测的有效性。试验是使用工厂中的一种大型柱式浮选机进行的，为期5天，泡沫深度固定为1.0 m，但起泡剂量和通气率在很宽的范围内变化。阻力传感器的输出与清洁煤产量（质量回收率）具有很强的线性相关性，确定系数为0.97。