论述了我国现有1000～2500米~3大型高炉的技术薄弱环节及其现代化改造的方针、标准、内容和效果。高炉大修时完成以改善料柱透气性和降低燃料比为重点的技术改造,是经济有效地挖潜途径;它将促进现有高炉达到三个0.5的先进水平(利用系数0.5米~3/吨·日,燃料比0.5吨/吨铁,生铁含硅0.5％),并为新建巨型高炉进行技术储备。 Discusses China’s existing 1000 ~ 2500 m ~ 3 large blast furnace technical weak links and modernization of the guidelines, standards, content and results. Blast furnace overhaul completed to improve the column permeability and reduce fuel ratio as the focus of technological innovation, is a cost-effective way to tap the potential; it will promote the existing blast furnace to achieve three 0.5 advanced level (utilization factor of 0.5 m 3 / t Day, the fuel ratio of 0.5 tons / ton of iron, 0.5% of pig iron containing silicon), and the technical reserves for the new giant blast furnace.