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碱金属对高炉操作的危害问题,近年来引起国内外炼铁工作者高度重视.为防止碱害,探索高碱金属原料的高炉操作和如何去除原料中碱金属已经成为炼铁科研和生产的重大课题.国外许多国家严格限制碱金属入炉.一般规定入炉原料碱金属含量低于2～3公斤/吨铁.最多不超过5公斤/吨铁.国内高炉目前对碱金属没有明确的限量.不少地区的矿石(特别是鲕状赤铁矿)含碱金属高,宣钢、昆钢、包钢、新疆等地高炉都感到碱害严重.
Alkali metal blast furnace operation hazards, in recent years caused by domestic and foreign ironworks workers attach great importance to prevent alkali damage, to explore the operation of high alkali metal blast furnace and how to remove the raw material alkali metal has become a major iron smelting research and production Problems. Many foreign countries strictly limit the alkali metal into the furnace .General provisions of raw materials into the furnace alkali content of less than 2 to 3 kg / ton of iron. Up to not more than 5 kg / ton of iron. Domestic blast furnace alkali there is no definite limit. Many areas of ore (especially oolitic hematite) with high alkali metal, declared steel, Kunming Iron and Steel, Baotou, Xinjiang and other places blast furnaces are felt alkali damage.