Electrokinetic dewatering has been shown to be a promising technology; however, one of thechallenges in its practical application is the corrosion of anodes. Recently, dimensionally stable anodes(DSAs) were developed that are virtually corrosion free. This paper investigates the feasibility of usingtitanium anodes with iridium oxide coating (IrO2/Ta2O5) in the electrokinetic dewatering of minetailings slurries. Characterization of the tailings is presented, followed by the results of electrokineticdewatering, including the gradually increased and decreased voltages applied during the treatment,polarity reversal, and surcharge pressure applied to tailings. The results show that electrokinetictreatment using DSAs can significantly dewater tailings with low density and minimize electrodecorrosion. The electroosmotic permeability measured for the combination of voltages and surcharge-9 2 -8 2 pressures ranges from 6.39 10 m /sV to 5.30 10 m /sV. The results also show that theeffectiveness and efficiency of the electrokinetic dewatering of tailings can be improved by firstapplying a high voltage and then reducing it gradually during treatment.
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机译：电动脱水已被证明是一种有前途的技术。然而，在实际应用中的挑战之一是阳极的腐蚀。最近，开发了尺寸稳定的阳极（DSA），它几乎没有腐蚀。本文研究了在带尾矿浆液的电动脱水中使用带有氧化铱涂层的钛阳极（IrO2 / Ta2O5）的可行性。介绍了尾矿的特性，然后进行了电动脱水的结果，包括在处理过程中逐渐增加和减少的电压，极性反转和施加到尾矿上的附加压力。结果表明，使用DSA进行的电动处理可以显着脱水低密度的尾矿，并使电腐蚀最小化。针对电压和附加电荷9 2 -8 2的组合测得的电渗渗透率范围为6.39 10 m / sV至5.30 10 m / sV。结果还表明，通过在处理过程中先施加高电压然后逐渐降低电压，可以提高尾矿电动脱水的有效性和效率。
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