提高转炉出钢口寿命的生产实践

Production Practice of Improving the Service Life of Converter Taphole

摘要: 针对转炉出钢口寿命的影响因素，对出钢口座砖和袖砖改造，改进出钢口组装工艺，优化出钢口更换工艺，改善了出钢口套砖材质。另一方面，在使用过程中从改善炉渣氧化铁含量、挡渣工艺等措施降低过程侵蚀。在采取相关措施后，出钢口寿命由200炉提高到370炉，每年可减少更换出钢口23支/炉，减少误时2070 min/炉。

Abstract: Based on influencing factors on the life of the converter tap hole, the following measures are taken: the base brick and sleeve brick of the tap hole are reformed, the assembly process of the tap hole is improved, the replacement process of the tap hole is optimized and the material of the tap hole sleeve brick is improved. On the other hand the process erosion is reduced by improving the iron oxide content of the slag and the slag retaining process during application. As a result, the life of the tap hole is increased from 200 heats to 370 heats, and the replacement of 23 tap holes per furnace can be reduced each year, reducing the time delay of 2070 minutes per furnace.