国内铝电解废旧阴极回收利用研究及工业化现状

The recycling and industrial application of aluminumelectrolysis spent pot-lining in China

论述了国内铝电解废旧阴极的研究和工业化状况。目前大部分回收利用废旧阴极的方法还处于试验研究阶段,阻碍其工业化应用的主要原因是偏重环保因素而不重视经济效益。见诸报道的工业化方法为郑州轻金属研究院的"铝电解废旧阴极无害化技术研发及产业化应用"技术,已建成两家处理厂,年处理能力为1.8万t。调查表明,浮选法的工业化也已实现。小型浮选厂利用浮选法处理废旧阴极取得了经济效益且已形成一定规模,行业年处理量约为15万t,行业年盈利3 000～4 500万元。

The research on recycling aluminum-electrolysis spent pot-lining （SPL） and the industrial application in China was introduced. At present, most of the recycling ways, which particularly stressed on environmental protection and did not pay comparative attention to economic benefits, were still studied in laboratory rather than applied in industry. The only reported industrial application is ＂Researching on detoxifying SPL and the industrial application technology＂, which was invented by Zhengzhou Light Metal Research Institute. Two factories, which could totally treat 18 thousands tons SPL per year, have been established by this invention. Furthermore, the investigation by the author showed that recycling SPL by flotation had also been applied in industry. Small-scale froth factories, which profited from treating SPL by flotation, had form dimensions to some extend. The factories could deal with about 150 thousands tons of SPL every year and the annual profit is about 30 to 45 millions.