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所测定的硫酸根含量不同时阳极的电化学性能数据表明,本文研制的新涂层(Ir-RuPdTi)钛阳极对于放氯、放氧反应具有较高的电催化活性.这样在电积提取金属时可节省电能消耗,与石墨阳极相比,每生产1t镍可节省电能360kW·h.新涂层钛阳极放氯效率很高,达97.1%,而且不受硫酸根含量的影响,从而克服了SO离子浓度升高,石墨阳极析红过程受影响,放氯效率降低的缺点.
The measured data of the electrochemical performance of the anode with different sulfate content indicate that the new anode (Ir-RuPdTi) titanium anode prepared in this paper has high electrocatalytic activity for chlorine and oxygen evolution reaction. In this way, the energy consumption can be saved when electrowinning the metal, which saves 360kW · h of electric energy per ton of nickel produced compared with graphite anodes. The newly-coated titanium anode has a very high chlorine removal efficiency of 97.1% and is not affected by sulfate content, thus overcoming the problem of increased SO2 concentration, impaired graphite anode redistribution, and lower chlorine removal efficiency.