The used deficiency of the bell , valve, fire duct and application of carbonized tungsten are introduced in this paper, effectiveness and benefits are analyzed in the first iron mill of Jinan Iron and Steel Group Co. .

• 为此分析了济钢第一炼铁厂高炉料钟、放散阀、火管的使用弊端及碳化钨技术的应用,并对使用效果和效益作了分析。