Direct reduction of low grade chromite overburden for recovery of metals

Autor:	Vilas Tathavadkar, R Sen, C B Rao, Gajanan Kapure
Rok vydání:	2011
Předmět:	Mechanical Engineering Metallurgy Metals and Alloys Cycle time Metal Overburden Flux (metallurgy) Volume (thermodynamics) Mechanics of Materials visual_art Bench scale Materials Chemistry visual_art.visual_art_medium Environmental science Chromite
Zdroj:	Ironmaking & Steelmaking. 38:590-596
ISSN:	1743-2812 0301-9233
DOI:	10.1179/1743281211y.0000000028
Popis:	The management of huge volumes of overburden at chromite mines is a concern, and there is a need to make effective use of this material. Therefore, direct reduction of low grade chromite overburden from the Sukinda chromite mines was studied at high temperatures to recover Fe, Cr and Ni. The effect of process parameters, such as temperature, time, reductant and flux, on the recovery of these metals was studied. The bench scale results obtained were then used in laboratory rotary hearth furnace reduction experiments, where it was found that a cycle time of 25 min is required for maximum recovery of metal. It was observed that ∼90% of Fe and >90% of Ni were recovered and thus have the potential to reduce the volume of waste at chromite mines.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9f50b660a939117388dd2603d36c8f30 https://doi.org/10.1179/1743281211y.0000000028 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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