I was just testing myself to see if I could find an answer, I am in no way positive of this. This is what I came up with though. Maybe you can make sense of it.

. 文摘:以高钛型钒钛磁铁矿为主要原料的攀钢高炉，在解决了泡沫渣、粘渣、铁水粘罐、铁损高、脱硫能力低等重要技术难题后，通过优化高炉操作及炉料结构，开发一系列强化冶炼的新技术，取得了大型高炉在采用难冶炼的特殊矿、入炉品位低的情况下达到高利用系数的经验，获得了巨大的经济效益，并建立了高炉冶炼钒钛磁铁矿的系统理论。
Abstract: Having been solved several critical problems,such as slag foaming,viscous slag,hot metal pit adhesion,high metal loss and low desulphurization rate, Pangang has developed a new package of operation intensification technology by optimization of blast furnace operation and burden structures with good economic results.A systematical theory of vanadium and titanium magnetite smelting in blast furnace has been established.

http://gt.tf.t.f2us.com/A-gt200001012.html

A great importance of silco reduction and iron increasing of furnace burden to the improvement of iron making's economic results is analysed. At present, to seek their maximum economic profits, quite a few of iron and steel enterprises hope to import high quality foreign iron ore and reduce gradually the occupatance ratio of domestically produced iron concentrates. In China, the desired iron content of furnace burden is getting higher and higher(even up to 50%～60%). In such a situation, if the domestic ...
分析了提高高炉入炉品位、降低SiO2 含量对提高炼铁效益的巨大影响。论述了目前不少钢铁企业为了获取高炉炼铁的最大效益 ,都愿意多“吃”优质进口铁矿石 ,逐步减少国内铁矿山自产铁精矿的使用比例。在我国高炉炉料铁含量快速提高 (已达到 5 6%～ 60 % )的形势下 ,国内铁矿山如果不采取积极措施改变铁品位较低、SiO2 杂质高的状态 ,提高自产铁精矿质量 ,必将在激烈的市场竞争中处于劣势 ,市场份额会越来越少 ,如此发展下去 ,将直接影响我国现有铁矿山的持续发展 ,也会影响到金属铁矿山 2 0多万职工的生活、社会稳定及炼铁效益。讨论了在此情况下 ,我国铁矿山选矿工业应如何发展 ,提出了发展方向、对策及今后应注意的若干问题
http://dict.cnki.net/NoteKnowNodeCount.aspx?filename=KYGC200...

Under the condition of XINGGANG′s sintering production,the sintering production line test of increasing the imported iron ore proportion was conducted The result shows that the sinter quality, BF burden grade and iron making technico economic indices were improved when the imported iron ore proportion was increased to 45%
针对邢钢原料条件 ,进行了提高进口矿配比烧结的工业试验。结果表明 ,进口矿配比提高到 45 %时 ,烧结矿质量指标、高炉综合入炉品位及炼铁技术经济指标均得到改善。