Abstract：Effects of ore-coke mixed charging on softening-dripping behavior of vanadium-titanium magnetite composite burdens and migration patterns of V and Cr elements in slag-iron were studied systemically and theoretically to improve the level of smelting vanadium-titanium magnetite in blast furnace. The proportion of sinter and pellet was constant. The results show that, ore-coke mixed charging ratio has significant effects on the softening and dripping parameters including softening zone, melting zone dripping ratio and permeability. With the increase of ore-coke mixed charging ratio, the softening range [t40－t4] tends to be a little wider; the melting range [tD－tS] is greatly narrowed; the cohesive zone tends to narrow and its location is shaft down; softening-dripping characteristics tends to decrease significantly, gas permeability becomes better and the dripping ratio tends to increasing then decreasing; the recovery ratio of V and Cr in initial iron tends to increasing then decreasing. Thus, a certain ratio of ore-coke mixed charging is helpful to improve the softening-dripping behavior of vanadium-titanium magnetite composite burdens for smelting in blast furnace. The optimal ore-coke mixed charging ratio is 25%.
收稿日期: 2014-01-21
出版日期: 2015-01-12
引用本文:
陈立杰， 柳政根， 付小佼， 于洪翔， 唐 珏， 储满生. 矿焦混装对钒钛矿综合炉料软熔滴落的影响[J]. 钢铁, 2015, 50(1): 5-10.
CHEN Li-jie, LIU Zheng-gen, FU Xiao-jiao, YU Hong-xiang, TANG Jue, CHU Man-sheng. Effects of ore-coke mixed charging on softening-dripping behavior of vanadium-titanium magnetite composite burdens. Iron and Steel, 2015, 50(1): 5-10.
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