-
公开(公告)号:US4059673A
公开(公告)日:1977-11-22
申请号:US567007
申请日:1975-04-10
CPC分类号: C01F7/60
摘要: Removal of iron from aluminous material such as bauxite is effected by treatment with a gas mixture comprising sulphur dioxide and carbon monoxide in a first step, followed by chlorination in a second step whereby ferric chloride is produced and removed by volatilization. Aluminium chloride of low iron content may be obtained from the purified aluminous material by chlorination.
摘要翻译: 通过在第一步骤中用包含二氧化硫和一氧化碳的气体混合物处理,然后在第二步骤中进行氯化,由此通过挥发产生氯化铁并除去铁铝,从而从铝质材料如铝土矿中除去铁。 可以通过氯化从纯化的铝土材料获得低铁含量的氯化铝。