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为深化高炉冶炼理论,提高炼铁生产技术,近年来,国内外进行了高炉解剖研究,取得了炉内状况的丰富资料(炉料分布及下降情况,炉内温度分布与炉料的还原、软化、熔融及滴落状态)。同时也获得了高炉各部位侵蚀后真实的操作炉型,进而认识了碱金属(K_2O+Na_2O)对炉衬材料的侵蚀和对高炉操作的危害。本文从回旋区的解剖,碱金属侵蚀机理、风口区域的侵蚀与风口位移出发,提出斜风口和风口斜装对高炉冶炼的作用,从而要求改革传统的风口水平安装,建议新建或大修大高炉时,将风口由水平安装改为往下倾斜5°安装,可减少风口损坏,增铁节焦。
In order to deepen the theory of blast furnace smelting and improve the production technology of iron smelting, in recent years, blast furnace anatomy research has been carried out at home and abroad, and abundant data have been obtained (distribution and reduction of charge, furnace temperature distribution and reduction, softening and melting of charge And drip state). At the same time, it also obtained the real operating furnace after erosion of various parts of the blast furnace, and then realized the erosion of the lining material and the harm to blast furnace operation by alkali metal (K 2 O + Na 2 O). In this paper, the anatomization of the cyclotron, the mechanism of alkali metal erosion, the erosion of the tuyere area and the displacement of the tuyere are put forward. The function of inclined tuyere and tuyere to smelt the blast furnace is put forward, so that the traditional tuyere should be reformed horizontally. , The tuyere from horizontal installation to tilt down 5 ° installation, can reduce the tuyere damage, increase iron section coke.