The Max Economic Profit Analysis of Sintering and refining of Vanadic and Titanic Ore and Common Ore in Chengde I & S Co. ; Analysis of vanadium distribution regularity in Panzhihua Vanadium-titanium Magnetite Mine

承钢 钒钛矿和普通矿分烧分炼最大经济效益的研究浅析攀枝花钒钛 磁铁矿钒的分布规律