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On Chlorine Ion Behaviors in Oxide Aluminum Productive Process
Author(s): 
Pages: 20-21,25
Year: Issue:  3
Journal: GANSU METALLURGY

Keyword:  氧化铝氯离子铝酸钠溶液积累;
Abstract: 在混联法氧化铝生产流程中,原燃物料中的含氯杂质,最终大部分以Cl-形式进入到铝酸钠溶液中,排氯主要在烧结法部分进行.文章论述了流程中Cl-的循环积累,不仅引起设备产生点蚀、缝隙腐蚀等局部腐蚀,而且将对分解工序和蒸发工序产生不良影响,指出控制或减少进入流程中的含氯杂质是解决问题的根本.建议生产上调整固碱和液碱的补碱比例,从源头上减少进入流程中的氯离子含量.
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