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前言平炉冶炼稀土钢,多年来一直存在着水口结瘤、汤道堵塞问题。这几乎是冶炼稀土钢的通病。水口结瘤或汤道堵塞,使注型浇不上来,造成钢水及钢锭报废。这是推广稀土在钢中应用生产工艺上的难题。鞍钢过去对稀土钢的研究,作过大量的试验工作,对于水口结瘤也进行过分析。但至今尚未弄清机理,制订出可行的生产工艺。在研究过去工作的基础上,经过分析认为:炉后用铝终脱氧,当铝加入钢包之后,随之加入稀土,铝的脱氧将被稀土元素所取代,用于终脱氧的铝达不到脱氧效果,而稀土元素参加了脱氧。致使
Preface Hearth furnace smelting rare earth steel, over the years there has been a nozzle nodules, soup Road blockage problem. This is almost common problem of smelting rare earth steel. Nodular water or soup Road blockage, so that injection can not pour, resulting in molten steel and steel scrap. This is to promote the application of rare earth in steel production process problems. Anshan Iron and Steel in the past on rare earth steel, made a lot of experimental work, for the nozzle nodules have also been analyzed. However, the mechanism has not yet been clarified and a feasible production process has been formulated. Based on the study of the past work, the analysis shows that after the furnace is finished with aluminum, the final deoxidation of aluminum will be replaced by the rare earth elements after the aluminum is added into the ladle, Effect, while rare earth elements participated in the deoxygenation. Cause