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根据有关添加剂对铜电积影响的文献介绍,确定了连续检测电解精炼添加剂的实施方案并设计了一个检测器。建立的一套试验装置可在大型试验规模上模拟工业电解车间的生产。试验中,考虑了在电解槽以及检测器内的温度、面积与体积比、氧化还原电位、流体动力学条件等因素。这套系统可实现抑制剂的连续添加.检测器包括设在管道槽内的连续移动的钢片,在钢片上沉积物厚度恒定时可进行超电压测量.尽管在一定浓度范围内可以获得良好的灵敏性,但是,由于无控参数所引起的测量值漂移太大,使这套系统至今不能用于自动控制.若氯化物离子浓度和氧化还原电位能被控制,获得较好的结果是可能的.
According to the literature about the effect of additives on copper electrowinning, the implementation of continuous detection of the electrorefining additives was confirmed and a detector was designed. A test set-up was set up to simulate the production of industrial electrolyzers on a large scale. In the experiment, factors such as temperature, area-to-volume ratio, redox potential, hydrodynamic conditions and the like in the cell and the detector were taken into consideration. This system allows for the continuous addition of inhibitors. The detector consists of a continuously moving plate of steel located in the duct, allowing overvoltage measurements when the thickness of the deposit on the plate is constant. Although good sensitivity can be obtained over a range of concentrations, the system has so far not been able to be used for automatic control due to the drift of measured values caused by uncontrolled parameters. If the chloride ion concentration and the redox potential can be controlled, it is possible to obtain better results.