| 摘要 |
A method of forming and refining molten silicon-bearing steel by addition of a calcium-containing silicon additive. Determine if the amount of calciu m in the calcium-containing silicon additive is more or less than the amount of calcium desired in the finished steel. If it is more than the amount of calcium desired in the finished steel, add the amount of calcium-containing silicon additive corresponding to the excess calcium early in the refining t o combine with sulfur and other impurities in refining, and add the calcium- containing silicon additive containing the total amount of calcium desired i n the finished steel after the desulfurization of the molten steel and befor e casting. If the amount of calcium in the calcium-containing silicon additi ve does not provide the total amount of calcium desired in the finished stee l, adding an additional amount of calcium after desulfurization of the molte n steel and before casting to the molten steel during refining.
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