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泡沫厚度和界面位置是影响浮选柱精矿品位和回收率的重要控制变量。测定界面的方法,一般是沿浮选柱的一个点或几个点上测出液体的静压力。用这种方法所测出的界面可能有相当大的误差。这主要是由于泡沫区和捕集区的计算密度不同所致。现已研制出一种轻便型电导探测装置。用此装置穿过界面测量电导以确定界面位置。在界面位置,可看出电导有很大的变化。这主要是由于在泡沫区和捕集区中气体所占比例不同。用电导探测装置所测出的界面精确度可达到±5cm。电导探测装置可用于浮选柱工作时在线校准其界面测定系统。本文描述了这种装置在试验型浮选柱(直径0.91m)中的使用结果。
Foam thickness and interface location are important control variables affecting flotation column concentrate grade and recovery. Determination of the interface method, usually along the flotation column at a point or a few points measured on the liquid static pressure. The interface measured by this method can have considerable errors. This is mainly due to the difference in calculated density between the foam zone and the catchment zone. Has now developed a portable conductivity detection device. The device is used to measure the conductance across the interface to determine the interface location. The location of the interface shows a large change in conductance. This is mainly due to the different proportions of gases in the froth and catchment areas. With conductivity detection device measured interface accuracy up to ± 5cm. Conductivity detection devices can be used to calibrate their interface measurement system on-line for flotation column operation. This article describes the use of this device in a pilot flotation column (diameter 0.91 m).