铁精矿中碱金属含量,当超过一定限度之后,对高炉生产会带来许多危害。近几年国内外考查和研究表明,碱金属(K_2O、Na_2O)会引起球团膨胀、炉壁结瘤、腐蚀炉衬、降低炉子寿命等弊病。因此,加拿大、美国、瑞典等国家不断深入开展此项工作的研究,国内对此问题也逐渐引起重视,并把碱金属含量列为衡量铁精 Alkali metal content in iron concentrates, when over a certain limit, will bring a lot of hazards to blast furnace production. In recent years, domestic and foreign examinations and studies have shown that alkali metal (K_2O, Na_2O) will cause the pellet expansion, furnace wall nodulation, corrosion lining, reduce furnace life and other ills. Therefore, Canada, the United States, Sweden and other countries continue to conduct in-depth study of this work, the domestic issues have gradually attracted attention, and the alkali metal content as a measure of iron