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高炉生产随精料的发展和冶炼强度的提高,不少高炉炉身寿命日趋缩短,重要原因之一就是采用精料以后渣量减少,产生了碱金属在炉内循环富积而严重侵蚀砖衬的新问题。武钢高炉炉身寿命有的仅2～3年,为查明破损原因,对高炉进行了多次破损调查,调查结果表明:高炉的碱负荷为7～9kg/T·Fe;锌负荷为0.6kg/T·Fe,高炉砖衬中存在着严重的碱金属富积,最高碱含量达50.6%,凡是含钾、钠、锌,沉积炭高的砖衬,往往失去强度,破损严重,甚至呈疏松状。残存砖的岩相鉴定也表明,碱金属和锌与砖中莫来石生成新的化合物,同时有促进
Blast furnace production With the development of fine materials and smelting strength, many shortening the life of blast furnace shaft, one of the important reasons is the use of fine material to reduce the amount of slag, resulting in a cycle of accumulation of alkali metals in the furnace and a serious erosion brick lining New problem In order to find out the cause of the damage, blast furnaces were damaged several times, and the results showed that: the alkali load of blast furnace was 7 ~ 9kg / T · Fe; the load of zinc was 0.6kg / T · Fe, there is a serious alkali accumulation in the brick lining of the blast furnace, and the highest alkali content reaches 50.6%. Any brick lining containing potassium, sodium, zinc and high deposition carbon often loses its strength and damages even loose shape. Identification of lithofacies of remnant bricks also indicates that alkali metals and zinc generate new compounds with mullite in bricks, along with facilitation