针对攀钢提钒炼钢厂新投产的方圆坯连铸机浇铸铝镇静钢时发生水口堵塞、连浇炉数较低的问题，采取了提高钢水出钢终点w(［C］)、优化脱氧工艺、促进夹杂物上浮，加强脱钢水扩散脱氧等措施，工业应用表明：中间包钢液中w(［Ca］)/w(［Al］)控制在0.05～0.15，w(［Ca］)/w(［S］)控制在0.15左右，钢水可浇性得到有效改善，水口堵塞现象得以缓解，单中间包连浇炉数由小于等于5炉提高到8炉。
To solve the problems of nozzle clogging and low continuous casting numbers of the billet and round continuous casting machine in Vanadium Recovery and Steelmaking Plant of Pangang, the steelmaking process was optimized, such as raising the content of carbon in molten steel, optimizing the deoxidation process, promoting the inclusions floatation with effective measures, promoting diffusive deoxidation of molten steel. The industrial practice shows that w(［Ca］)/w(［Al］) in tundish molten steel can be controlled in the range of 0.05-0.15, and w(［Ca］)/w(［S］) can be controlled in 0.15 more or less as well. With these countermeasures, the pourability can be improved obviously. Furthermore, the problem of nozzle clogging can be solved basically, and it can continuously cast 8 heats from below 5 heats in single tundish.
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