摘要
利用含铝矿物,采用两段流程,在较低酸耗条件下可制取Al_2O_3含量>10%碱式氯化铝.适宜的工艺条件为:灼烧温度700～750℃,灼烧时间30～50分钟,加酸摩尔比3.4～3.6,一段反应时间1.5小时,二段反应时间3小时.
Using bauxite, basic aluminum chlorides in which content of Al_2O_3 is 10% or more than 10% may bc producted in two stage reaction process. The need of hydrochloric acid is less. The suitable operation conditions are calcination temperature at 700～750℃, Calcination time at 30～50 minutes, mole ratio of acid and Al_2O_3 at 3.4～3.6、the first stage reaction time at 1.5 hours and the second stage reaction time at 3 hours.
