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描述了采用浮选柱代替传统浮选机降低铁精矿中硅含量的情况，论述了浮选柱的优点，对浮选柱和传统浮选机的投资费用进行了比较，并介绍了几种浮选回路的配置。
Describes the use of flotation column instead of the traditional flotation machine to reduce the silicon content of iron concentrate, discusses the advantages of flotation column, the flotation column and the traditional flotation machine investment costs were compared and introduced several Flotation circuit configuration.