大、中型转炉高效吹氧技术研究.pdfVIP

第十五届全国炼钢学术会议文集 大、中型转炉高效吹氧技术研究 杨文远 1、蒋晓放2 、王明林1、邹节忠3、宁爱民4 (1、钢铁研究总院，2 、宝山钢铁股份有限公司，3、萍乡钢铁公司，4 、海鑫钢铁公司) 摘 要：转炉高效吹氧技术包括提高转炉供氧强度和优化造渣操作。宝钢 1 炼钢 300 吨转炉供氧强度达到 3.83Nm3/t.min，太钢、涟源、萍乡等中型转炉的供氧强度达到4.0~4.4Nm3/t.min。采用此项技术可提高转 炉钢产量8~15%。钢铁研究总院已经开发多孔交错布置喷头设计、制作及供氧、造渣的全部技术，可以满足 国内转炉高效吹氧技术转让的需要。 关键词：氧气转炉、供氧强度、吹氧时间、脱磷效率 Study of high efficient blowing technique on large and medium converters Yang Wenyuan1, Jiang Xiaofang2, Wang Minglin1, Zou Jiezhong3, Ning Aimin4 1. Central Iron and Steel Research Institute, 2.BaoSteel Group Corp., 3. Ping Xiang Iron and Steel Group Corp., 4. Hai Xin Iron and Steel Group Corp. ABSTRACT: The high efficient blowing technique includes increasing oxygen supply intensity and optimizing slag forming. The oxygen supply intensity on 300t converters of No1 steelmaking shop at Bao Steel reaches 3.83 Nm3/t.min, and at Taiyuan Steel, Lianyuan Steel, Pinxiang Steel and other steel plants, the oxygen supply intensity on medium converters is in the range of 4.0-4.4 Nm3/t.min. The productivity of converter can be increased by 8-15% with adoption this technique. The whole technique, including design and manufacture of lance nozzle with reasonable pacnolontenue of outlets, technique of oxygen supply and slag forming, has been developed by CISRI to meet the need of technique transfer. KEY WORDS: converter, oxygen supply intensity, oxygen blowing time, efficient of dephosphorization 1．前言 提高转炉炼钢的吹氧量几乎可以按比例地增加转炉钢产量。近年来我国大、中型转炉的数量有了明显 增加，80~300 吨的大、中型转炉共有 159 座，总公称容量 20820 万吨，占转炉总吨位的 64.56% 。提高大、 中型转炉供氧强度对于增加钢产量、淘汰落后的小转炉和改善经济效益都很重要。钢铁研究总院已与国内 21 个钢厂进行了转炉高效吹氧技术开发，供氧强度 3.8~4.65Nm3/t.min ，采用高效吹氧的转炉可提高钢产量 8~15%。宝钢一炼钢300 吨大型转炉供氧强度