Production of bauxite and aluminium chloride of low iron content
    1.
    发明授权
    Production of bauxite and aluminium chloride of low iron content 失效
    生产低铁含量的铝土矿和氯化铝

    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。