湿法冶金中钛基二氧化锰阳极的研究

STUDY ON THE TITANIUM-BASE MANGANESE DIOXIDE ANODE IN HYDROMETALLURGY

研究了钛基二氧化锰阳极涂层的工艺条件．并对有关物理化学性能进行了测试．在钛基体和二氧化锰涂层之间涂覆Ｓｎ－Ｓｂ中间涂层能有效地降低槽电压和防止钛基体的钝化，解决了湿法冶金中应用该种阳极存在的难题．所研制的阳极在硫酸盐水溶液的电解过程中，具有优良的电化性能和耐腐蚀性能，降低能耗，提高了产品的纯度．这种阳极可望在锌、铜、镉、锰、镓、铟、钻、镍等金属的电积过程中得到应用．

Technological conditions for Ti-base MnO2 anodic coating has been studied and the relevant physicochemical properties have beed measured and tested. The Sn-Sb mid-coating coated between the Ti substrate and MnO2 coating can effectively decrease the cell voltage and prevent the Ti substrate from passivation, so that the dilemma of applying this kind of anode in hydrometallurgy can be solved. In the electrolysis process of sulfate water solution, the developed anode possesses excellent electrochemical properties and corrosion resistance i the energy consumption can be reduced and the purity of the product can be enhanced. This anode is expected to be applied in the electrodeposition process for metals such as Zn, Cu, Cd, Mn, Ga, In, Co, Ni, etc..