Useful Material Ferro Vanadium

The process flow of ferro vanadium mainly includes raw material preparation, feeding, smelting, tapping, refining, casting, quality inspection and tail gas treatmentRaw material preparation: including the preparation of high-grade vanadium slag, vanadium content of more than 10%; Choose high-quality reducing agents, such as coke, with a fixed carbon content of more than 80%; As well as appropriate amounts of slag making agents, such as lime and fluorite, for adjusting the composition and properties of the slagFeeding: Add vanadium slag, reducing agent and slag making agent to the closed electric furnace according to a certain proportion, pay attention to control the feeding speed to avoid charge overflow.

1.Smelting: Start the electric furnace, gradually increase the current to fully melt the charge, control the temperature of the electric furnace between 1500-1600 °C to ensure the smooth progress of the reduction reaction, and regularly stir the charge to make the composition and temperature uniform.Tapping: When the ferro vanadium content in the furnace reaches about 20%, open the taphole, pour the vanadium iron into the molten iron ladle, pay attention to control the iron tapping speed, and avoid the overflow of the molten iron. Refining: Transfer the molten vanadium iron to the refining furnace, add an appropriate amount of deoxidizer and alloying elements, such as silicon, manganese, etc., control the temperature of the refining furnace between 1400-1500 °C, stir evenly, and adjust the refining room according to the composition and temperature of the molten vanadium. Casting: Cast the refined molten vanadium iron into the mold to make iron vanadium blocks or iron vanadium ingots, pay attention to control the casting speed and temperature, and avoid defects such as cold separation and shrinkage holes.Quality inspection: chemical composition analysis and physical property testing of cast iron vanadium blocks or iron vanadium ingots to ensure that they meet relevant standards. Tail gas treatment: The tail gas generated in the smelting process is purified by the dust collector and discharged after reaching the standard; The slag is magnetically separated to recover valuable metals.Through this series of steps, it is possible to produce ferrovanadium products that meet the requirements.

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