A1_2O_3 and Na_2O as the available components in the red mud solution could be recovered, but no longer recycled into the alumina process, thereby optimized the sintering process of alumina production.

• 赤泥洗液中的有效成分Al_2O_3、Na_2O得以回收利用,不再返回氧化铝的生产流程作无效循环,从而优化了烧结法氧化铝的生产工艺路线。