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首页> 外文期刊>Transactions of the Indian Institute of Metals >Wear and Dissolution of MgO-C Refractory Lining in Belly and Top Cone Regions of BOF Vessel
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Wear and Dissolution of MgO-C Refractory Lining in Belly and Top Cone Regions of BOF Vessel

机译：BOF容器腹部和顶部锥形区域MgO-C耐火衬里的磨损和解散

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摘要

The MgO-carbon bricks of varying carbon concentration are used as refractory lining material in BOF. Laser profiling of the lining is done at regular intervals to keep track of refractory wear in different parts of vessels. The main factors which affect the kinetics of dissolution of graphite flakes lying between the MgO grains in the belly region are attack by CO2 in gas and FeO in slag, and temperature. FeO can easily penetrate the MgO grains along grain boundaries and reach those places where graphite flakes are present. Kinetic models of refractory wear are analyzed on the basis of data obtained from actual laser profile measurements. The bricks salvaged from the top cone region at the end of the campaign have been subjected to scanning electron microscope (SEM) and electron probe micro analyzer (EPMA) investigations. The possible cause of wear in top cone region is also the oxidation of carbon in the brick by CO2 gas and direct attack by FeO thrown from the jet impact region.
机译：不同碳浓度的MgO-碳砖用作BOF中的耐火衬里材料。 衬里的激光剖面是定期进行的，以跟踪不同部件的耐火磨损。 影响腹部MgO颗粒之间的石墨薄片溶解动力学的主要因素是通过CO 2在炉渣中的CO2攻击，以及温度。 Feo可以轻松地沿着晶界渗透MgO颗粒，并到达存在石墨片的那些地方。 基于从实际激光型材测量获得的数据分析耐火磨损的动力学模型。 在活动结束时从顶部锥形区域挽救的砖已经受到扫描电子显微镜（SEM）和电子探针微分析仪（EPMA）调查。 顶部锥形区域的可能原因也是CO 2气体通过CO2气体氧化砖中的碳氧化，并通过FEO从喷射冲击区域抛出的直接攻击。

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