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遷安磁選精礦粉燒結礦粉化機理的研究

  • 摘要: 本文對燒結礦粉化粉末中的礦物組成進行了試驗研究,證明了遷安精礦粉燒結礦中γ-2CaO·SiO2的形成是引起燒結礦粉化的根本原因。
    通過降低精礦粉中SiO2含量、CaO配加量、配加白云石、配加少量含磷灰石鐵礦粉和配加少量的含硼、鋇、鉻、釩及錳等礦物以及在低溫氧化氣氛中燒結試驗研究,均可得出減少或防止燒結礦中γ-C2S形成的效果。
    配加少量含磷灰石礦粉,防止燒結礦粉化曾作為主要措施應用于生產。
    降低精礦粉中SiO2的含量,以控制γ-C2S的形成從而咸輕或防止燒結礦粉化的試驗結果,近來在首鋼燒結廠生產中已實現。

     

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