直接还原处理钒钛矿资源的几种典型工艺评述  

COMPARISON OF SEVERAL TYPICAL PROCESSES FOR DEALING WITH VANADIUM TITANIUM MAGNETITE RESOURCES

作　　者：秦洁[1] 刘功国[1] 李占军[1] 齐建玲[1] 

机构地区：[1]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000

出　　处：《矿冶》2014年第4期79-82,91,共5页Mining And Metallurgy

摘　　要：对新西兰钢铁公司、南非海威尔德钢钒公司、中国攀钢资源综合利用中试线分别采用的钒钛矿处理工艺进行了详细阐述。新西兰钢铁公司和海威尔德采用回转窑直接还原—电炉熔炼—含钒铁水提钒工艺,只能提取钒钛矿中的铁和钒,钛进入熔分渣,TiO2品位低,提取困难。攀钢采用转底炉直接还原—熔分电炉深还原—提钒工艺,熔分过程不调渣,含钛炉渣品位较高,稳定在45%以上,可利用传统的硫酸法提钛,实现了钒钛磁铁矿铁、钒、钛的回收利用。介绍直接还原处理钒钛矿的工艺方法,对钒钛矿资源以及类似的多金属共生矿的开发利用有借鉴作用。Processes of dealing with vanadium titanium magnetite iron ore in three enterprises, namely New Zealand Steel, Highveld Steel ＆ Vanadium Corp Ltd in South Africa and Panzhihua Iron and Steel Corporation in China are reviewed. The New Zealand Steel and Highveld corporation adopt rotary kiln direct reduction--EAF smelting--extracting vanadium from vanadium bearing hot metal process, however, this process just recover the ele- ments of Fe and V in the iron ore but the element Ti goes to the slag of EAF which is difficult to be extracted be- cause of the low grade of the TiO2. Panzhihua Iron and Steel Corporation applies the rotary hearth furnace （RHF） direct reduction--EAF deep reduction--vanadium extraction process and there is no other materials except DRI and reductant entering the EAF, so the TiO2 content in the slag reaches above 45% which is higher than that of the oth- er corporations and the Ti element could be extracted by the traditional sulfuric acid method. The process provided by Panzhihua steel can recover Fe, V and Ti in the vanadium titanium magnetite and opens up a new way for the ore utilization. This article introduces the direct reduction processes to recover valuable elements from the vanadium titanium ore, providing references for the utilization of the vanadium titanium ores as well as other similar composite ore resources.

关 键 词：钒钛矿 直接还原 熔分 提钒 电弧炉 

分 类 号：TF059[冶金工程—冶金物理化学]