美国生产的钢材中 ,为防止锈蚀 ,有 1 5 %镀了锌层。然而镀锌钢材报废后 ,在再生过程中去除锌层时会排出有害烟尘。美国一家金属再生公司研究出一种清除废钢材镀锌层的新技术———电化学加工法。该方法使用一个大型容器 ,内装高温的强腐蚀性氢氧化钠溶液 ,将废钢材放入该容器 In the steel produced in the United States, 15% of zinc is plated to prevent rusting. However, after the zinc-coated steel is scrapped, harmful fumes can be discharged when the zinc layer is removed during the regeneration process. A metal recycling company in the United States has developed a new technology for removing galvanized steel scrap - electrochemical processing. The method uses a large container, built with high temperature corrosive sodium hydroxide solution, the waste steel into the container