硅钙合金混合加料法生产过程中炉底上涨问题的研究  

THE PROCESS OF α-SiC GROWTH AT THE BOTTOM OF FERRO-SILICON-CALCIUM FURNACE WITH MIXED CHARGING METHOD

作　　者：郭映波[1] 储少军[1] 王玉刚[1] 戴建华[1] 李忠思 

机构地区：[1]北京科技大学冶金学院,北京中国100083 [2]黑龙江穆棱冶金化工有限责任公司,穆棱市中国157500

出　　处：《铁合金》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)

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.

关 键 词：硅钙合金 混合加料法 炉底上涨 矿热炉 o-碳化硅 碳热还原 物理配碳 

分 类 号：TF823[冶金工程—有色金属冶金]