钒钛矿PLCsmelt工艺冶炼技术

PLCSMELT PROCESS SMELTING TECHNOLOGY FOR VANADIUM TITANIUM MAGNETITE

钒钛磁铁矿的成分和结构复杂,是世界公认的难选冶矿种。与普通铁精矿相比,钒钛磁铁矿的品位偏低,有价组元分散于各矿相中,采矿和选冶都具有较大的难度,钒钛矿资源的有效利用是钢铁行业的关注问题之一。基于此,依据攀西钒钛磁铁矿特性,提出了PLCsmelt炼铁新工艺。首先介绍了PLCsmelt炼铁工艺流程,以气基竖炉-电炉工艺为参照,从工艺流程、成本、资源利用率、碳排放和能耗等方面对两种工艺进行了分析对比,并与高炉工艺进行了碳排放及能耗对比。研究表明,PLCsmelt的工艺成本、钒资源回收率、碳排放及能耗分别为1943.1元/t、75.9%、1009.6 kgCO_(2)/tHM及370.9 kgce/tHM,各参数较高炉及气基竖炉-电炉工艺均有明显优势,证明PLCsmelt炼铁新工艺更有利于钒钛磁铁矿资源综合高效利用。同时对PLCsmelt工艺技术的发展前景进行了展望,也对该技术存在的问题及未来研究的方向进行了讨论。

Vanadium titanium magnetite has a complex composition and structure,and is widely recognized as a difficult to select and metallurgical mineral in the world.Compared with ordinary iron concentrates,vanadium titanium magnetite has a lower grade and valuable components are dispersed in various mineral phases,making mining and beneficiation more difficult.The effective utilization of vanadium titanium ore resources is one of the concerns in the steel industry.Based on this,according to the characteristics of Panxi vanadium titanium magnetite,a new PLCsmelt ironmaking process was proposed.Firstly,the PLCsmelt ironmaking process was introduced,taking the gas based vertical furnace electric furnace process as a reference.The two processes were analyzed and compared in terms of process flow,cost,resource utilization,carbon emissions,and energy consumption,and compared with the blast furnace process in terms of carbon emissions and energy consumption.Research has shown that the process cost,vanadium resource recovery rate,carbon emissions,and energy consumption of PLCsmelt are 1943.1 yuan/t,75.9%,1009.6 kgCO_(2)/tHM,and 370.9 kgce/tHM,respectively.These parameters have significant advantages over blast furnace and gas based vertical furnace electric furnace processes,proving that the new ironmaking process of PLCsmelt is more conducive to the comprehensive and efficient utilization of vanadium titanium magnetite resources.At the same time,the development prospects of PLCsmelt process technology were discussed,as well as the existing problems and future research directions of this technology.