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鞍钢转炉原一直采用单一材质砌筑炉衬,因局部损坏造成停炉,导致炉衬寿命在500～700次间波动。镁碳砖在转炉易损部位上试用成功,使易损部位蚀损速度减为0.26～0.4mm/炉,若有相应的配套砖,其炉龄可以稳定在800～1000次。本文叙述了镁碳砖的生产工艺和在转炉上试用的情况,并提出了在使用目前生产的镁碳砖条件下,限制炉龄提高的因素是配套砖。因此,今后必须生产出高强度抗冲击的镁碳砖或二步锻烧镁质白云石烧成砖,实行综合砌筑,以获得更好的效益。
Anshan Iron and Steel converter has been the use of a single material masonry lining, due to local damage caused by shutdown, resulting in furnace lining life fluctuates between 500 to 700 times. Magnesia carbon bricks in the vulnerable parts of the converter trial success, the vulnerable parts of the erosion rate reduced to 0.26 ~ 0.4mm / furnace, if the corresponding supporting brick, the furnace can be stabilized at 800 to 1000 times. This paper describes the production process of magnesia-carbon brick and the trial on the converter, and puts forward that the factor that limits the furnace-age improvement under the current production of magnesia-carbon brick is the matching brick. Therefore, the future must produce high-strength impact-resistant magnesia brick or two-step calcined magnesia dolomite fired brick, the implementation of integrated masonry, in order to get better benefits.