首页|钒钛磁铁矿直接还原的研究与发展

钒钛磁铁矿直接还原的研究与发展

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钒钛磁铁矿是中国重要的特色资源,其高效清洁利用具有重要意义.由于钒钛磁铁矿结构复杂,铁钒钛等矿物紧密共生,导致其难冶炼、难利用.当前高炉-转炉工艺实现了铁和钒的利用,但钒资源回收利用率较低、环境污染较大、运行成本较高,且钛资源尚未获得利用.直接还原工艺可在提铁的同时富集钒、钛,被认为是实现铁钒钛综合利用的可行工艺.从还原机理、还原效率和还原结果等方面,分别对不同的固态还原剂和气态还原剂进行了对比,阐述了还原强化的效果与机理,介绍了还原-钠化-熔分耦合新工艺的探索和研究进展.基于低碳、节能、高效等理念,提出了将氢冶金技术应用于还原-钠化-熔分耦合工艺的设想,即氢还原-钠化-熔分耦合工艺,以及该工艺需要开展的研究内容.兼顾低碳、短流程、高效的氢还原-钠化-熔分耦合工艺发展前景可观.
Research and development for direct reduction of vanadium-bearing titanomagnetite
Vanadium-bearing titanomagnetite is an important characteristic resource in China,and its efficient and clean utilization is of great significance.Due to its complex structure and close symbiosis of iron,vanadium,titani-um and other minerals,it is difficult to smelt and utilize.At present,although iron and vanadium have been utilized by blast furnace-converter smelting vanadium-titanium magnetite,the recovery rate of vanadium resources is low,the environmental pollution is large,the operation cost is high,and the titanium resources have not been utilized.Direct reduction process can enrich vanadium and titanium while extracting iron,which is considered as a feasible process to realize comprehensive utilization of iron,vanadium and titanium.From the aspects of reduction mecha-nism,reduction efficiency and reduction result,different solid reducing agents and gaseous reducing agents are com-pared respectively,the effect and mechanism of reduction strengthening are expounded,the exploration and research progress of the new coupling process of reduction-sodiumziation-melting are introduced.Based on the concept of low carbon,energy conservation and high efficiency,the idea of applying hydrogen metallurgy technology to the reduc-tion-sodiumziation-melting coupling process is proposed,that is,the hydrogen reduction-sodiumziation-melting cou-pling process,and the research content needed to be carried out.The development prospect of hydrogen reduction-sodiumziation-melting coupling process with low carbon,short flow and high efficiency is promising.

vanadium-bearing titanomagnetitedirect reductionreducing agentshort flowhydrogen reduction

王新宇、赵海泉、齐渊洪、王锋

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钢铁研究总院有限公司先进钢铁流程及材料国家重点实验室,北京 100081

攀枝花学院钒钛学院,四川攀枝花 617000

钒钛磁铁矿 直接还原 还原剂 短流程 氢还原

2024

中国冶金
中国金属学会

中国冶金

CSTPCD北大核心
影响因子:0.907
ISSN:1006-9356
年,卷(期):2024.34(2)
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