钢包釉对钢中总氧含量及夹杂的影响研究  

Influence of Ladle Glazes on Total Oxygen Content and Inclusions of Steel

作　　者：贺恒星 韩兵强[1] 李楠[1] 

机构地区：[1]武汉科技大学、省部共建耐火材料与冶金国家重点实验室,武汉430081

出　　处：《硅酸盐通报》2014年第7期1769-1773,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家973计划预研项目(2012CB722702)

摘　　要：炼钢过程中出钢后钢渣附着在钢包工作衬壁上,形成钢包釉,对钢-耐火材料的反应产生重要影响,是钢中夹杂的主要来源之一,同时对钢中总氧含量也产生影响。本文通过设计不同钙硅比的钢包釉层,研究其对钢中总氧含量及夹杂物的影响。研究发现:铝镁质耐火材料与钢水直接接触时,耐火材料组分溶解进钢水中形成夹杂,增加了钢中的夹杂和总氧含量;耐火材料表面覆盖釉层时,耐火材料与钢水通过界面层间接反应,减少了钢中的夹杂和总氧含量。其中钙硅比高的界面层,钢中总氧含量低,夹杂的数量也少,但是夹杂的尺寸较大。Ladle glaze is one of the main source of inclusions in steel. In the process of steelmaking, ladle glaze becomes the interlayer between molten steel and refractory, which has a considerable influence on reaction between molten steel and refractories and the total oxygen content. Influences of different CaO/ SiO2 molar ratio of steel-aluminum magnesia refractories interface layers on total oxygen content and inclusions of steel are researched. The results show that when alumina magnesia refractory materials contact with molten steel directly, constituents of refractory dissolve into molten steel and form new inclusions, increasing the amount of inclusions and the total oxygen content in steel. When alumina magnesia refractories contact with molten steel indirectly designed interface layer on refractory surface will decrease the amount of inclusions and total oxygen content. The CaO/SiO2 molar ratio of interlavers influences the total oxygen content and the amount of inclusions. When the CaO/SiO2 molar ratio of interlaver is high, the total oxygen content and the number of inclusions in steel is low, but larger size inclusions are observed.

关 键 词：钢包釉 总氧含量 夹杂 钙硅比 

分 类 号：TU54[建筑科学—建筑技术科学]