To sum up the effect of chlorion corrosion on the process equipments and index in Bayer process alumina production,and analyse the main reasons of equipments unefficient caused by chlorion corrosion.

综述拜耳法产氧化铝过程中氯工艺指标及产设备腐蚀，分析了有氯存在时造成设备腐蚀失效主要原因。