Seminar Details

Seminar Title
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Processing Ferroalloys from Lean Ore and Fines using Thermal Plasma.
Seminar Type
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Defence Seminar
Department
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Metallurgical and Materials Engineering
Speaker Type
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Student
Speaker Name
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Mr. Sumant Kumar Samal (Roll no: 514MM1001)
Date  &  Time
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08 Apr 2021  04:00 PM
Venue
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Online platform (Google Meet)
Contact
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Prof S C Mishra and Dr. B Mishra
Abstract
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The production of ferroalloys is dominated by the Submerged Arc smelting route and is limited to lumpy ores or agglomerates. In the present work, extended arc plasma is employed for production of different ferroalloys viz. ferrochrome, ferromanganese and ferrotitanium from lean ore and fines generated during mining, crushing and beneficiation. The chromium and silicon content in ferrochrome alloy is about 68% and less than 0.5%, with overall metallic recovery rates exceeding 95%. The generated melilite slag can also be used in cement production after granulation. Alumina rich ferruginous type manganese ores are adjusted to the MgO-Al2O3-CaO-SiO2 and CaO-SiO2-Al2O3 slag systems, and observed that the increase in basicity ratios improve recovery rates. Further, to produce ferrotitanium, combined carbothermic, aluminothermic, and silicothermic reduction approaches are made in stages and varying compositions. The direct use of ore fines and wastes avoiding agglomeration is cost-effective over lumpy high-grade ore minerals. The beneficiation of lean ores with subsequent change in slag chemistry fit into the requirement of thermal plasma.