金属学报  1978, Vol. 14 Issue (1): 1-16

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氧气侧吹转炉炼钢的粘渣操作——关于炉渣和炉内气氛对炉衬保护作用的讨论

殷瑞钰;吴石麟;刘仁刚

唐山钢铁公司钢铁研究所;唐山钢铁公司钢铁研究所;唐山钢铁公司钢铁研究所

VISCOUS SLAG OPERATION FOR STEEL-MAKING IN OXYGEN SIDE-BLOWN CONVERTERS

Yin Rui-yu Wu Shi-lin Liu Ren-gang (Research Institute of Tangshan Iron and Steel Company)

殷瑞钰;吴石麟;刘仁刚. 氧气侧吹转炉炼钢的粘渣操作——关于炉渣和炉内气氛对炉衬保护作用的讨论[J]. 金属学报, 1978, 14(1): 1-16.
, , . VISCOUS SLAG OPERATION FOR STEEL-MAKING IN OXYGEN SIDE-BLOWN CONVERTERS[J]. Acta Metall Sin, 1978, 14(1): 1-16.

摘要 参考文献 相关文章 Metrics 全文: PDF(1203 KB)   摘要: 氧气侧吹转炉的特点之一是金属-炉渣界面处搅拌作用特别强烈,它促进了粘渣操作的使用。 对比并分析了氧气侧吹转炉不同类型的终点炉渣,发现一些粘稠的炉渣基本上不侵蚀普通焦油白云石炉衬,在某种情况下还可以在炉衬砖上融接上长,控制处理得当,就有保护炉衬的作用。实践证明:采用粘渣操作有利于转炉炉龄的大幅度提高。 讨论了氧气侧吹转炉冶炼间隙时期中炉内气氛的性质及其与炉渣的作用情况,从热力学角度上可以证明一些炉气对渣中FeO具有还原能力。 在我们的情况下,当炉役平均终渣的∑(FeO)≤12％时,往往形成炉渣在炉衬表面融接上长,其原因主要是该种高熔点的终渣中FeO等低熔点组元被炉内气氛还原,使炉渣熔化温度进一步升高,由液态转变为固态所致。这类上长物的矿物组成主要是3CaO·SiO_2,2CaO·SiO_2;其中2CaO·Fe_2O_3等含铁矿物甚少。 Abstract：The very vigorous agitation at the interface on molten metal and slag in oxygen side-blown steel-making converters is a special feature which promotes the application of viscous slag operation.An investigation of end-point blow slags in the above-said converter has shown that many different types of viscous slags were corroded a little to the tarred dolomite lining bricks, and in certain cases the fused slags appear to stick and to creep upwards along the brick-lining forming a protection against erosion during operation. Thus, the application of viscous slag operation would appear to be prolonging the life of converter lining in steel-making.The nature of converter atmosphere at the time interval between the blowing periods and its interaction with slag have been investigated, as certain atmospheres are capable of reducing FeO in slag on thermodynamical considerations.In such case, it has been observed that when the total FeO of mean end-point blow slags was less than 12％, such slags in their usually fused condition to stick and to creep upwards along lining bricks. The slags crept upwards were chiefly composed of 3CaO·SiO_2 and 2CaO·SiO_2, with rather low 2CaO·Fe_2O_3 and other ferrous minerals content. It would appear that the "∑FeO" in the original endpoint blow slag of higher melting-temperature in its course of creeping upwards were progressively reduced by the converter atmosphere with the result of forming solid phases of higher melting-temperature such as 3CaO·SiO_2 and 2CaO·SiO_2. 收稿日期: 1978-01-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 殷瑞钰 吴石麟 刘仁刚 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1978/V14/I1/1 [1] Gerhard Derge, Open Hearth Proc., 56(1973) , 350． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed