【摘要】 以钒钛磁铁矿炼铁原料为基础,系统研究了烧结矿中Mg O质量分数对高炉冶炼钒钛磁铁矿综合炉料软熔滴落性能和V,Cr在渣铁中迁移规律的影响,并进行了理论分析.研究表明,随着烧结矿中Mg O质量分数的提高,综合炉料的软化区间t40-t4变宽;熔化区间tD-tS稍有收窄,软熔带变薄且位置略微下移;熔滴性能总特征值S先减小后增大,综合炉料透气性先变好后恶化,在Mg O质量分数为2.98%~3.40%时透气性最好;滴落率逐渐变小;V,Cr在滴落铁中的收得率略有降低;因此,烧结矿中Mg O质量分数在3.40%左右为宜,此时高炉渣中Mg O质量分数约为12%.更多还原

【Abstract】 Effects of Mg O content in sinter on softening-dripping behavior of vanadium-titanium magnetite composite burden and the migration patterns of V,Cr in slag-iron were studied. The results showed that with the increasing of Mg O in sinter,the softening range t40- t4 tends to be wider,the melting range tD- tSis narrowed slightly. The cohesive zone tends to be narrowand its location is shifted down but not obvious. Softening-dripping characteristics S decreases at first then increases,the permeability tends to be better then worse,when the content of Mg O is between2. 98% and 3. 40%,the permeability is the best. The dripping ratio tends to be declining; when Mg O is increased,it is not conducive to the reduction of V,Cr. The optimal content of Mg O in the sinter is around 3. 40% and the content of Mg O in BF slag is about 12%.更多还原