Recovery of Vanadium from Esfahan Steel Company Steel Slag; Optimizing of Roasting and Leaching Parameters

Publish Year: 1385
نوع سند: مقاله ژورنالی
زبان: English
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JR_ISSIRAN-3-2_003

تاریخ نمایه سازی: 6 آبان 1402

Abstract:

In this Study, vanadium recovery from the steelmaking converter slag was studied. Salt roasting-basic leaching is the process which was applied to separate and extract vanadium from steel making slag. Ground slag was roasted after mixing with determined quantities of sodium carbonate. The effect of time and temperature of roasting and sodium carbonate content were studied. The optimum temperature, time and sodium carbonate content in the roasting process were found to be ۱۰۰۰oC, ۴۵ min and ۱۰%, respectively. Temperature, time, leachant concentration and particle size were optimized for leaching process. It was determined that sodium carbonate is the major leaching agent in comparison with sodium hydroxide. The most suitable conditions for leaching process was found to be ۸۰oC, ۶۰ min, sodium carbonate to sodium hydroxide mass ratio of ۴۰-۵۰:۱۰ and particle size between ۱۰۰ and ۱۲۰ mesh. More than ۸۰% of vanadium was recovered under optimum conditions.

Authors

A. Mahdavian

Department of Materials Engineering, Isfahan University of Technology, Isfahan,۸۴۱۵۶۸۳۱۱۱, Iran

A. Shafyei

Department of Materials Engineering, Isfahan University of Technology, Isfahan,۸۴۱۵۶۸۳۱۱۱, Iran

E. Keshavarz Alamdari

Department of Mining, Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

D. Haghshenas

Department of Mining, Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

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