A methodology to quantify the physico-chemical phenomena during induration of a single magnetite pellet

Nurni, ViswanathanCentre of Excellence in Steel Technology, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay (författare)

Induration of magnetite pellet involves three important phenomena, namely oxidation, sintering and associate heat transfer; these phenomena are interdependent on determining the final quality of the pellet. In order to study the sintering a novel optical dilatometric method was used. These studies were performed separately for magnetite and completely oxidized magnetite. Further, the sintering phenomena was modeled taking cues from powder metallurgy literature. In order to study the oxidation kinetics, TGA analysis were conducted both at powder and pellet scales at sufficiently low enough temperatures so that sintering effects are minimized. Interesting results that has not been reported earlier have been observed and these results could be explained using available gas-solid reactions models both at powder and pellet scales. Once the sintering and oxidation models were validated independently, they were integrated along with heat transfer model to realize a comprehensive induration model. These efforts have resulted in a Single Magnetite Pellet Induration Model (SPIM) which in principle can be used for optimizing raw material mix as well as the process parameters at the reactor scale.

TEKNIK OCH TEKNOLOGIER Materialteknik Metallurgi och metalliska material hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Metallurgy and Metallic Materials hsv//eng
Magnetite Pellet Induration
Sintering – Oxidation Kinetics
Heat Transfer
Optical Dilatometer
Single Pellet Modeling
Process Metallurgy
Processmetallurgi

Kumar, TK Sandeep,1986-Luleå tekniska universitet,Mineralteknik och metallurgi(Swepub:ltu)kamsan (författare)
Ahmed, HeshamLuleå tekniska universitet,Mineralteknik och metallurgi(Swepub:ltu)hesahm (författare)
Andersson, C.LKAB (författare)
Björkman, BoLuleå tekniska universitet,Mineralteknik och metallurgi(Swepub:ltu)bobj (författare)
Centre of Excellence in Steel Technology, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology BombayMineralteknik och metallurgi (creator_code:org_t)

Av författaren/redakt...: Nurni, Viswanath ...; Kumar, TK Sandee ...; Ahmed, Hesham; Andersson, C.; Björkman, Bo

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Metallurgi och m ...

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