摘要
通过3.2 MVA硅钙矿热炉炉体的解剖与取样检测,初步探明混合加料法生产硅钙合金过程中炉内碳化硅的形貌变化和生成规律。参与硅钙合金生成反应的中间产物α-SiC未完全消耗,在炉内逐步积累,构成了炉缸内堆积物的主体,造成炉底上涨。确定炉内合理的硅钙矿热炉电气参数和调整炉料结构——“物理配碳”,是延长混合加料法硅钙合金生产周期的重要技术措施。
Based on the sample detection of different partion in the ferro-silicon-calcium submerged arc furnace cooled after one production cycle about two weeks, the hearth SiC shape and quantity changes in the reaction period were given by SEM photographs. For the selected case, hearth SiC is removed as easily as it is built up, there are no restrictions on the amount of hearth SiC that is available for reaction. Experience shows, however, that hearth SiC is deposited (during a long period), the geometry of furnace hearth will change. The cavity will grow more and more narrow, the hearth bottom will elevate higher, and the furnace recovery will be gradually ruined. The main technique measures to limit hearth SiC deposition are essentially the optimum of furnace electric specification and the modification of charge structure design.
出处
《铁合金》
北大核心
2003年第1期1-7,共7页
Ferro-alloys
基金
国家自然科学基金项目(批准号 50274013)
