What is the role of FeV80?
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What is the role of ferrovanadium?
Ferroalloys composed of vanadium and iron are mainly used as alloy additives in steelmaking, and high-vanadium ferrovanadium is also used as an additive for non-ferrous metal alloys. Commonly used ferrovanadium contains 40%, 60% and 80% vanadium. The main raw material for the production of ferrovanadium in my country is vanadium-titanium magnetite. After vanadium-containing pig iron is enriched by beneficiation, it is refined in a blast furnace, and vanadium slag is extracted during the atomizing furnace or converter blowing process. After crushing, sodium salt (soda ash, anhydrous sodium sulfate) is added to the vanadium slag for sodium oxide roasting to make vanadium soluble sodium metavanadate (NaVO3). After leaching and purification, ammonium sulfate is added to precipitate ammonium polyvanadate [(NH4)2V6O16], and then deaminated and melted to form flaky Vanadium pentoxide. The required components are V2O597-99%, P＜0.05%, S＜0.05%, Na2O+K2O＜1.5%. In addition, Vanadium pentoxide can be directly extracted from vanadium-containing iron concentrate or vanadium-containing carbonaceous shale through chemical treatment.
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