The invention belongs to the technical field of iron and steel metallurgy, and discloses a channel type induction heating single tube RH refining device and method, which is used to heat the liquid steel in the vacuum chamber and reduce the temperature drop of the liquid steel in the single tube RH refining production. The device includes ladle, vacuum chamber, impregnating tube, iron core, coil, water-cooled or air-cooled device; the top of impregnating tube is connected with vacuum chamber, and the bottom of impregnating tube is inserted into the bottom of non-contact ladle below the liquid level of ladle steel; the upper middle of impregnating tube is opened along the radial direction; the iron core is a closed ring structure, passing through the channel and coil center in turn, the coil axis is perpendicular to the axis of impregnating tube, and the coil is connected with the bottom of Water-cooled or air-cooled devices are connected. The molten steel circulates in vacuum chamber, impregnating tube and ladle, and the heat can be transferred to the molten steel of single RH pipe with the molten steel flow, which makes the heating more uniform and efficient, and the heating efficiency reaches more than 90%. The nodulation of the vacuum chamber caused by the introduction of nozzles into the side wall of the vacuum chamber is avoided and the service life of the equipment is prolonged.
【技术实现步骤摘要】
一种通道式感应加热单管RH精炼装置及方法
本专利技术属于钢铁冶金
,具体涉及一种通道式感应加热单管RH精炼装置及工艺方法。
技术介绍
为满足优质钢材的冶炼要求,炉外精炼成为了现代钢铁生产中的重要工序之一,而RH真空精炼技术因具备生产能力大、精炼效果好、处理周期短等优点,在钢厂中得到了广泛的应用。经半个多世纪的发展,RH真空精炼装置由单一脱气设备逐渐扩展到集脱气、脱碳、脱氧、脱硫、温度补偿、成分控制、改变夹杂物形态于一体的多功能精炼装置,尤其在生产超低碳钢方面表现出了显著的优越性。如今,随着社会的发展,对高品质钢的需求逐渐增大,因此,如何提高RH精炼效率、延长使用寿命,成为了一个越来越重要的问题。单管RH精炼装置(单嘴RH,单管RH,单嘴精炼炉)是在保留传统RH原有冶金功能基础之上,将上升管和下降管合并成一个大内径的浸渍管,并将上升管侧吹氩改成由钢包底部偏心吹氩驱动钢液循环流动。转炉或电炉冶炼得到的钢液转移至钢包中,经钢包车运送至单管RH真空室的下方。开始精炼时,浸渍管插入钢液中,同时依靠真空室抽真空以及氩气的驱动,使钢液经浸渍管上升一定高度进入真空室并回流至 ...
【技术保护点】
1.一种通道式感应加热单管RH精炼装置,其特征在于,包括钢包、真空室、浸渍管、铁芯、线圈、水冷或空冷装置;浸渍管的顶端与真空室连通,底端插入至钢包钢液液面以下未接触钢包底面;浸渍管上部中间沿径向开设通道;铁芯为闭合环状结构,依次穿过通道和线圈中心,线圈轴线与浸渍管轴线垂直,线圈与水冷或空冷装置相连。
【技术特征摘要】
1.一种通道式感应加热单管RH精炼装置,其特征在于,包括钢包、真空室、浸渍管、铁芯、线圈、水冷或空冷装置;浸渍管的顶端与真空室连通,底端插入至钢包钢液液面以下未接触钢包底面;浸渍管上部中间沿径向开设通道;铁芯为闭合环状结构,依次穿过通道和线圈中心,线圈轴线与浸渍管轴线垂直,线圈与水冷或空冷装置相连。2.权利要求1所述的通道式感应加热单管RH精炼装置,其特征在于,所述通道沿真空室中间径向开设。3.根据权利要求1或2所述的通道式感应加热单管RH精炼装置,其特征在于,所述通道为圆柱形或下部楔形结构。4.根据权利要求1或2所述的通道式感应加热单管RH精炼装置,其特征在于,通道口相接的钢壳上,沿浸渍管外壳径向圆周设有一周的切缝。5.根据权利要求3所述的通道式感应加热单管RH精炼装置,其特征在于,通道口相接的钢壳上,沿浸渍管外壳径向圆周设有一周的切缝。6.根据权利要求1或2或5所述的通道式感应加热单管RH精炼装置,其特征在于,所述铁芯的材质为高导磁率的软磁材料,且铁芯与通道之间的空隙由耐火材料填充固定。7.根据权利要求3所述的通道式感应...
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