| 摘要 |
In a basic steelmaking process wherein dolomite is charged as a slag-forming ingredient, the improvement wherein dolomite, prior to its charging, is intimately mixed with iron oxide in defined proportions, and formed into shaped bodies. In one preferred embodiment, the intimate mixture is prereacted, by heating, to convert the calcium oxide portion of the mixture into dicalcium ferrite with or without conversion of magnesium oxide to magnesio ferrite. Compositions for addition to a basic steelmaking furnace in the form of preformed bodies of an intimate mixture of dolomite and iron oxide or the stated ferrite or ferrites resulting from the aforesaid prereaction, are also provided.
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