保尔沃特锌大板电积工艺的技术和主要设备

Paul Wurth Zn LARCATH Technology and Equipment

中国是个产锌大国,2009年锌产量已达435万t。但工厂规模小,电积工艺几乎都是传统的小板电积(阴极面积1.3-1.6 m2),存在厂房占地大、槽数量多、人工剥锌劳动强度非常大、导致阴极受损、生产成本高等缺点。大阴极板(阴极面积2.6m2以上)技术克服了小板技术的缺点,具有厂房占地少、生产成本低、产品质量好、自动化水平高、节省劳力、易于改善操作环境等诸多优点。该项技术已在西方矿冶公司得到了很好的应用,锌产能超过400多万t,是一项值得中国同行重视并大力推广的技术。

China is the biggest Zn producer in the world with total Zn production of 4.35 million tons in 2009.But almost all the Zn production come from small Zn plants with the traditional Zn electro-winning process by small size cathode technology（Cathode size range between 1.3-1.6 m2） and manual operation for cathode stripping.The disadvantages are obvious such as land required much bigger,cells number much more,manual operation for cathodes stripping-very intensive labor required,and may cause serious damage of cathode electrodes,higher OPEX.In order to improve and avoid such shortcomings,the Large Cathode（LARCATH,Cathode Size is above 2.6m2） Technology has been developed and concluded with the following merits-smaller land,lower CAPEX,lower OPEX,higher quality of Zn（SHG）,less man power,easier and better ventilation etc.The LARCATH technology has been well applied in western mining metal companies in the last few decades with total Zn productivity over 3 million tons.This technology is drawing more attentions in China and should be highly promoted to future application in the Zn Industry.