电解锰用钛基修饰阳极Ti/SnO_2/MnO_2的制备与性能研究  

Preparation of Titanium-substrate Modified Ti /SnO_2/MnO_2 Anode Plate for Electrolytic Manganese Metal and Its Performance Study

作　　者：杨文翠[1] 彭文杰[1] 李新海[1] 郭华军[1] 王志兴[1] 胡启阳[1] 

机构地区：[1]中南大学冶金科学与工程学院

出　　处：《矿冶工程》2014年第3期90-93,96,共5页Mining and Metallurgical Engineering

基　　金：湖南省科技计划重大专项(2011FJ1005)

摘　　要：采用Ti板作为基体,采用涂敷及热分解方法在其表面制备SnO2中间层和MnO2催化涂层,通过测试极化曲线分析其催化活性。采用活化后的Ti/SnO2/MnO2板作为电解锰的阳极板,以增大电流效率和降低能耗。结果表明Ti/SnO2/MnO2作为电解锰阳极板时的阳极电位和槽电压相对于铅板作为电解锰阳极板的阳极电位和槽电压都有明显的降低;阴极板上得到光滑的银白色锰层,阳极溶液中得到粉末状MnO2,可以用于制备锰酸锂;阴极电流效率从79.92%增大到88.80%,高于工业生产中的阴极电流效率,同时单位能耗从6946 kW·h/t降低到6079 kW·h/t,低于电解锰厂的单位能耗。Ti/SnO2/MnO2钛基修饰阳极是一种具有较好应用潜力的同槽电解锰和二氧化锰的阳极板。With Ti plate as substrate, SnO~ interlayer and MnO2 catalytic layer were prepared on its surface by using coating and thermal decomposition method, and the catalytic activity of the activated Ti/SnO2/MnO2 electrode was also analyzed with the polarization curve. Then the activated Ti/SnO2/MnO2 plate was taken as anode plate for electrolytic manganese for increasing current efficiency and reducing energy consumption in the test. Results indicated that there was a remarkable decrease in the anode potential and cell voltage with Ti/SnOE/MnO2 instead of lead plate as anode plate for electrolytic manganese. Furthermore, there was a layer of smooth silver Mn covering on the cathode plate and MnO2 powder obtained in the anode solution which can be used for preparation of lithium manganate. The cathodic current efficiency also increased from 79.92% to 88.8%, higher than that in industrial production, while per-unit energy consumption reduced from 6 946 kW · h/t to 6 079 kW · h/t, lower than that in electrolytic manganese plants. It is concluded that the titanium-substrate modified Ti/SnO2/MnO2 anode plate has a good application prospect for manganese and manganese dioxide being electrolyzed together in the same cell.

关 键 词：阳极 槽电压 极化曲线 阳极电位 电流效率 单位能耗 

分 类 号：TM912.9[电气工程—电力电子与电力传动]