精炼钢包铝镁系耐火材料轻量化及其渣蚀行为研究

发布时间：2018-04-26 18:38

  本文选题：精炼钢包 + 轻量化耐火材料　； 参考：《中国材料进展》2017年06期

【摘要】：耐火材料轻量化是其重要发展方向之一,研发合适的多孔骨料取代致密材料且确保服役安全与寿命是一条重要途径。大型工业炉工作衬处于高温苛刻环境,其渣蚀致损是关键,不仅与钢渣运动有关,也受材料微结构的影响,仅凭单一实验手段难以探明。以精炼钢包铝镁系耐火材料为对象,研制了性能指标参数优异的轻量微孔刚玉骨料及其轻量铝镁系耐火材料,无论是静态还是动态渣蚀实验,轻量铝镁系耐火材料均表现出不亚于普通铝镁系耐火材料的抗渣性能。同时,根据自制多孔骨料性能参数,采用随机骨料-基质二元结构模型描述耐火材料微结构差异,构建其渣蚀过程的温度、流动、反应等多场耦合数学模型,利用数值模拟方法,探索不同条件下精炼钢包轻量化耐火材料的渣蚀特性,明确了多孔骨料的关键参数及轻量化铝镁系耐火材料的抗渣蚀机理,可为设计和开发长寿轻量化耐火材料提供理论指导,能促进精炼钢包等高温窑炉的节能降耗。
[Abstract]:Lightweight refractories are one of the important development directions. It is an important way to develop suitable porous aggregates to replace dense materials and ensure service safety and life. The working lining of large industrial furnace is in a harsh environment at high temperature, and its slag corrosion is the key. It is not only related to the movement of steel slag, but also affected by the microstructure of the material. It is difficult to find out by a single experimental method. A lightweight corundum aggregate with excellent performance parameters and its lightweight aluminum-magnesium refractories were developed for refining ladle aluminum-magnesium refractories, both static and dynamic slag corrosion experiments were carried out. The slag resistance of lightweight alumino-magnesium refractories is no less than that of ordinary aluminum-magnesium refractories. At the same time, according to the performance parameters of self-made porous aggregate, the stochastic aggregate matrix binary structure model is used to describe the microstructure difference of refractories, and the coupled mathematical models of temperature, flow, reaction and so on in the process of slag corrosion are constructed. By means of numerical simulation, the slag corrosion characteristics of lightweight refractory in refining ladle under different conditions were explored. The key parameters of porous aggregate and the mechanism of slag corrosion resistance of lightweight aluminum-magnesium refractories were determined. It can provide theoretical guidance for the design and development of lightweight refractories for long life and promote energy saving and consumption reduction in high temperature furnaces such as refining ladles.
【作者单位】： 武汉科技大学省部共建耐火材料与冶金国家重点实验室;
【基金】：国家自然科学基金资助项目(51474165,51204126)
【分类号】：TF341;TQ175.1
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本文编号：1807175