铝电解生产阳极碳渣处置资源化利用技术分析研究

Analysis and Research on resource utilization technology of anode carbon slag disposal in aluminum electrolysis production

铝电解生产中碳阳极,作为强大直流导电消耗性介质体,被称为电解槽的“心脏”,在电解生产920℃-960℃高温熔融强腐蚀的Na3AlF6体系中,环境和质量等多种原因导致碳渣的产生。2018年我国电解铝产能3648.5万吨,占全球比重的占比56.7%。电解铝企业每生产和铸造1吨铝,大约产生5-20Kg碳渣。电解铝行业每年需处置碳渣约3.6万吨[1]。

the carbon anode,as a strong direct current conductive consumable medium,is called the"heart"of the electrolytic cell.In the production of Na3AlF6 system with 920℃-960℃high temperature melting and strong corrosion,the environment and quality and many other reasons lead to the production of carbon slag.In 2018,China's electrolytic aluminum production capacity was 36.485 million tons,accounting for 56.7% of the global proportion.For each ton of aluminum produced and cast by electrolytic aluminum enterprises,about 5-20kg of carbon slag is produced.The electrolytic aluminum industry needs to dispose about 36000 tons of carbon slag every year.