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Corex是一种使用非炼焦煤及纯氧代替焦炭和空气的熔融还原炼铁新工艺。与高炉工艺相比,Corex风口区域的温度更高,风口的使用寿命是一项重大挑战。在JSW公司,更换烧坏的风口所造成的休风几乎占工厂休风时间的15%。详细分析了风口破损及生产操作参数对破损的影响,以了解破损机理和根源。所有形式的风口破损不可能用一种普遍的原因来解释,但主要的原因集中在:入炉煤粉(<6.3mm)过多、煤的平均粒度偏小、渣铁倒灌、关闭风口、结瘤脱落及滑料等。
Corex is a new smelting reduction process that uses non-coking coal and pure oxygen instead of coke and air. The Corex tuyere area has a higher temperature and the tuyere life is a significant challenge compared to the blast furnace process. At JSW, the break caused by the replacement of a burnt outlet accounted for almost 15% of the factory break time. The influence of the damage of the tuyere and the operating parameters on the damage is analyzed in detail in order to understand the mechanism of the damage and the causes of the damage. All kinds of tuyere damage can not be explained by a common reason, but the main reasons are: too much coal powder (<6.3mm), too small coal average grain size, back slag, shut tuyere, knot Tumor off and slippery and so on.