Results show that the micro-inclusions in steel both in the refining process and after calcium treatment include La which is the tracer in ladle slag.
结果表明，精炼过程和钙处理后的钢中显微夹杂物均含有钢包渣示踪元素镧；中间包钢样中的显微夹杂物同时含有镧和中间包示踪元素铈；
Results show that the microinclusions in steel both in the refining process and after calcium treatment include La which is the tracer in ladle slag.
结果表明，精炼过程和钙处理后的钢中显微夹杂物均含有钢包渣示踪元素镧；
Some process measure were improved to increase carbon content of finished product, and ladle treatment was enhanced, it obviously improved steel's intension.
通过改进工艺措施提高成品碳的含量，加强炉后处理，使强度得到明显地改善。
Compared with pour-over treatment process in an open ladle, nodularizing in the Tundish covered ladle has following advantages:(a) reaction fumes and glare could be reduced obviously;
与用敞口包冲入法比较，用带盖包进行球化处理的好处是：①反应镁光和烟尘大幅度减少；
Compared with pour-over treatment process in an open ladle, nodularizing in the Tundish covered ladle has following advantages:(a) reaction fumes and glare could be reduced obviously;
与用敞口包冲入法比较，用带盖包进行球化处理的好处是：①反应镁光和烟尘大幅度减少；
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