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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

6º Simpósio Brasileiro de Minério de Ferro — Vol. 01 , num. 6 (2005)

Title

SENSITIVITY TO MINERAL COMPOSITION AND REACTIVITY IN PELLET INDURATION – A MODELLING APPROACH USING SIRO-INDUR

SENSITIVITY TO MINERAL COMPOSITION AND REACTIVITY IN PELLET INDURATION – A MODELLING APPROACH USING SIRO-INDUR

Authorship

FIRTH, AR; SAUNDERS, DB; TRANG, SCT; THURLBY, JA

AR Firth
FIRTH, AR

I am this author

DB Saunders
SAUNDERS, DB

I am this author

SCT Trang
TRANG, SCT

I am this author

JA Thurlby
THURLBY, JA

I am this author

DOI

10.5151/2594-357x-6MinFe - 135-144

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Abstract

SIRO-Indur, a mathematical process model of iron ore induration developed by CSIRO Minerals, has been used to evaluate the effect of goethite on a fictional straight-grate induration furnace processing hematite pellets. Changes in goethite content and dehydration kinetics were evaluated, as was the inclusion of a dehydration zone. Increases in the amount of goethite increased the fuel requirement for induration and high goethite levels of 20% or more suggested that spalling could be a problem. Lowering the dehydration temperature of the goethite resulted in it dehydrating during down-draft drying, lowering the pellet temperatures in that zone and reducing the risk of spalling. The inclusion of a dehydration zone in the induration furnace improved furnace performance provided additional primary cooling air was supplied.

 

SIRO-Indur, a mathematical process model of iron ore induration developed by CSIRO Minerals, has been used to evaluate the effect of goethite on a fictional straight-grate induration furnace processing hematite pellets. Changes in goethite content and dehydration kinetics were evaluated, as was the inclusion of a dehydration zone. Increases in the amount of goethite increased the fuel requirement for induration and high goethite levels of 20% or more suggested that spalling could be a problem. Lowering the dehydration temperature of the goethite resulted in it dehydrating during down-draft drying, lowering the pellet temperatures in that zone and reducing the risk of spalling. The inclusion of a dehydration zone in the induration furnace improved furnace performance provided additional primary cooling air was supplied.

Keywords

Iron ore pellets, Mathematical modelling, Goethite, Induration.

Iron ore pellets, Mathematical modelling, Goethite, Induration.

How to cite

Firth, AR; Saunders, DB; Trang, SCT; Thurlby, JA. SENSITIVITY TO MINERAL COMPOSITION AND REACTIVITY IN PELLET INDURATION – A MODELLING APPROACH USING SIRO-INDUR, p. 135-144. In: 6º Simpósio Brasileiro de Minério de Ferro, None, 2005.
ISSN: 2594-357X, DOI 10.5151/2594-357x-6MinFe - 135-144