氧化铝生产过程中溶出工艺流程的改进研究  

Study on the improvement of dissolution process in alumina production

作　　者：张琪 ZHANG Qi(Longkou Donghai alumina company,Yantai 264000,China)

机构地区：[1]龙口东海氧化铝公司

出　　处：《世界有色金属》2020年第1期149-149,151,共2页World Nonferrous Metals

摘　　要：有色金属铝是目前消耗量最大的金属原材料,且每年的消耗量在持续的增加。制备以及获取金属铝材料的主要方法是从氧土矿石中提取氧化铝,以此将氧化铝转换为原材料金属铝。通过对原有的氧化铝溶出工艺进行探究,找出工艺流程中的问题,并从加强矿源规范管理、提高硅量指标、避免有机物对碳酸钠结晶变性的影响、避免过多碳酸钠、硫酸钠的积累、建立应急机制等方面对其进行改进,提高氧化铝的生产质量和效率,从而减少能源的浪费以及对环境的污染。Aluminum nonferrous metal is the largest consumption of metal raw materials,and the annual consumption continues to increase.The main method to prepare and obtain aluminum metal materials is to extract alumina from oxyearth ore,so as to convert alumina into raw material aluminum metal.Through the exploration of the original alumina dissolution process,the problems in the process flow are found out,and the production quality and efficiency of alumina are improved by strengthening the standard management of ore source,improving the silicon content index,avoiding the influence of organic matter on the crystallization and denaturation of sodium carbonate,avoiding the accumulation of excessive sodium carbonate and sodium sulfate,and establishing emergency mechanism,so as to reduce the energy consumption.Waste and pollution of the environment.

关 键 词：氧化铝 生产过程 溶出工艺 

分 类 号：TF821[冶金工程—有色金属冶金]