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长期以来,电炉炼钢所用扩散脱氧剂以焦炭粉和硅铁粉为主,对于低硅低炭及有特殊要求的钢种,则采用硅钙粉、铝粉等脱氧剂。我们知道,焦炭粉、硅铁粉使用前的破碎、加工、烘烤等,工序繁复,粉尘硅毒较多,脱氧效果不理想,价格也不便宜;硅钙粉、铝粉脱氧效果好,但价格昂贵,限制了使用范围和规模。找寻、选择价格便宜、脱氧效果好、较少污染的扩散脱氧剂来代替传统的碳粉、硅铁粉,历来是炼钢工作者研究的课题。我们十分关心这方面的信息和动向。近年己有国外用碳化硅作脱氧剂的零星报道。86年6月末起,我们分别在电炉和氧气顶吹转炉进行用碳化硅代替硅铁粉、炭粉作脱氧剂和用碳化硅代替硅铁粉配制“炼钢增钒剂”的可行性试验与研究。到86年底,共试验26炉,(电炉20炉,转炉6炉)取得了初步的然而是令人欣慰的技术经济效果。从87年元月起,碳化硅的使用已纳入我厂技术操作规程,在电炉内全面推广应用,同时在转炉继续试验。
For a long time, the electric furnace steelmaking diffusion deoxidizer to coke powder and ferrosilicon powder-based, low carbon and low carbon and special requirements of steel, the use of calcium silicate powder, aluminum powder deoxidizer. We know that the coke powder, ferrosilicon powder before use crushing, processing, baking, complicated procedures, more dust silicon toxicity, deoxy effect is not satisfactory, the price is not cheap; calcium silicate, aluminum deoxidation effect is good, but Expensive, limiting the scope and scale of use. Find, choose cheap, good deoxidation effect, less pollution diffusion deoxidizer instead of the traditional toner, ferrosilicon powder, steel has always been the subject of research. We are very concerned about this information and trends. In recent years, foreign countries have used silicon oxide as a scavenger sporadic reports. From the end of June, 1986, we conducted the feasibility test and the feasibility test of “steel-making vanadium additive” by using silicon carbide instead of ferrosilicon powder, carbon powder as deoxidizer and silicon carbide powder instead of ferrosilicon in electric furnace and oxygen top-blown converter respectively. the study. By the end of 86, a total of 26 furnaces were tested (20 for electric furnaces and 6 for converter furnaces), but preliminary, but encouraging, technological and economic results were obtained. From January 1987 onwards, the use of silicon carbide has been incorporated into our factory’s technical operation rules, fully promoted and applied in the electric furnace, and the converter was continuously tested.