Calcium-containing ferrosilicon—FeSi(Ca)—does give much higher calcium yield than calcium disilicide during calcium treatment of steel under laboratory conditions, in line with industrial observations. Upon calcium treatment of both aluminum-killed and silicomanganese-killed steel, a new population of small calcium-rich inclusions forms. The results indicate that pre-existing (deoxidation) inclusions dissolve into the liquid steel after calcium addition, rather than directly reacting with the added calcium.

中文翻译：

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硅铁基钙处理铝镇静钢和硅锰钢

与工业观察结果一致，在实验室条件下对钢进行钙处理时，含钙硅铁 FeSi(Ca) 的钙产率确实比二硅化钙高得多。在对铝镇静钢和硅锰镇静钢进行钙处理后，会形成新的少量富含钙的夹杂物。结果表明，预先存在的（脱氧）夹杂物在添加钙后溶解到钢水中，而不是直接与添加的钙反应。