摘要:
针对某钢厂高炉低钛渣系的排碱能力进行试验,研究w(CaO)/w(SiO2)、w(MgO)、w(Al2O3)、w(TiO2)以及初始碱含量对炉渣排碱能力的影响。结果表明:随炉渣w(CaO)/w(SiO2)的提高,炉渣中w(MgO)和初始碱含量的增加,高炉渣的排碱能力都逐渐降低;随炉渣中w(Al2O3)的提高,炉渣的排碱能力逐渐增强;炉渣的排碱能力随w(TiO2)的增加有小幅度的降低。建议高炉生产应适当的降低炉渣w(CaO)/w(SiO2),炉渣的w(CaO)/w(SiO2)应保持在1.05到1.10左右;适当降低w(MgO),炉渣w(MgO)含量保持在7%~8%左右;适当增加w(Al2O3),降低w(TiO2);减少碱金属的入炉量,降低高炉碱负荷。
关键词:
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高炉 /
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高炉渣 /
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碱金属 /
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外矿 /
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排碱能力
Abstract:
According to the dealkalization capacity of blast furnace(BF) slag with low titanium content in an integrated iron and steel company were tested and analyzed, the effects of wCaO/wSiO2,wMgO,wAl2O3,wTiO2 and initial alkali content on dealkalization capacity of BF slag were studied.The results show that:with the increase of wCaO/wSiO2,wMgO and initial alkali content,the dealkalization capacity of BF slag decreases gradually.With the increase of wAl2O3,the dealkalization capacity of BF slag increa-ses.The dealkalization capacity increases slowly with the increase of wTiO2.wCaO/wSiO2 and wMgOshould be properly reduced in BF production,wCaO/wSiO2 and wMgOshould be kept at 1.05~1.10 and 7%~8%.wAl2O3can be appropriately increased,wTiO2can be decreased appropriately.The amount of alkali entering into the BF should be reduced,in order to reduce the degree of harmness to the BF.
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