High-chromium vanadium-titanium magnetite (HVTM) is a critical polymetallic ore resource, and its large-scale utilization is considered feasible by smelting flux pellets in blast furnaces. This study investigated the softening-melting properties of pure HVTM pellets (100% HVTM pellets) and HVTM with 30% conventional iron pellets (70% HVTM pellets) with different basicity (R). The results indicated that the softening-melting properties of 100% HVTM pellets deteriorated when R increased from 0.2 to 1.8, and the properties of 70% HVTM pellets first deteriorated and then improved. Moreover, 100% HVTM pellets exhibited superior softening-melting properties for R<1.0, while 70% HVTM flux pellets were better at R>1.6. The gas permeability of 100% and 70% HVTM pellets decreased with increasing basicity, although the permeability of 70% HVTM pellets was higher. Notably, the key components of acid slag are Mg-bearing anosorite and pyroxene, whereas those of basic slag are perovskite and melilite. With the increase of basicity, the content of chromium in dropping iron decreased and that of vanadium increased.

高铬钒钛磁铁矿（HVTM）是一种重要的多金属矿资源，通过高炉冶炼熔剂球团的方式实现大规模利用是可行的。本研究研究了纯 HVTM 球团矿（100% HVTM 球团矿）和具有不同碱度（R）的 30% 传统铁球团矿（70% HVTM 球团矿）的 HVTM 的软熔性能。结果表明，当R从0.2增加到1.8时，100%HVTM颗粒的软熔性能恶化，而70%HVTM颗粒的性能先恶化后改善。此外，100% HVTM 颗粒在 R<1.0 时表现出优异的软熔性能，而 70% HVTM 焊剂颗粒在 R>1.6 时表现出更好的性能。100%和70% HVTM颗粒的透气性随着碱度的增加而降低，尽管70% HVTM颗粒的透气性较高。值得注意的是，酸性渣的主要成分是含镁钙长石和辉石，而碱性渣的主要成分是钙钛矿和黄长石。随着碱度的增加，滴铁中铬含量减少，钒含量增加。