ISSN 2594-357X
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Blast furnace performance depends primarily on the performance characteristics of input/ raw materials viz. iron ore, coal, fluxes etc in the furnace. Iron ore quality is increasingly deteriorating with respect to high alumina-silica ratio, occasionally alumina in iron ore becomes even higher than 20%. It causes the blast furnace operations to maintain high heat levels (>1530 C) to ensure good hearth drainage performances and consequently improving the blast furnace stability and productivity. Besides, high alumina affects the slag viscosity; it adversely affects the blast furnace operation both in terms of enhanced energy consumption and CO2 emission. It is, therefore, inevitable to carry out a systematic research work to optimize blast furnace slag chemistry at high alumina contents. BF slags systems generally comprising Al2O3, SiO2, CaO, FenO, MgO, MnO etc. possess network structure. It greatly influences the rheological characteristics of the slag system. In this work the effect of alumina on the slag rheology and its flow characteristics is presented in the paper. The paper also presents a rheological model of blast furnace slag system containing high alumina.
Blast furnace performance depends primarily on the performance characteristics of input/ raw materials viz. iron ore, coal, fluxes etc in the furnace. Iron ore quality is increasingly deteriorating with respect to high alumina-silica ratio, occasionally alumina in iron ore becomes even higher than 20%. It causes the blast furnace operations to maintain high heat levels (>1530 C) to ensure good hearth drainage performances and consequently improving the blast furnace stability and productivity. Besides, high alumina affects the slag viscosity; it adversely affects the blast furnace operation both in terms of enhanced energy consumption and CO2 emission. It is, therefore, inevitable to carry out a systematic research work to optimize blast furnace slag chemistry at high alumina contents. BF slags systems generally comprising Al2O3, SiO2, CaO, FenO, MgO, MnO etc. possess network structure. It greatly influences the rheological characteristics of the slag system. In this work the effect of alumina on the slag rheology and its flow characteristics is presented in the paper. The paper also presents a rheological model of blast furnace slag system containing high alumina.
Palavras-chave
Blast furnace (BF), High alumina Slag, Flow behaviour, Network structure, Rheological model.
Blast furnace (BF), High alumina Slag, Flow behaviour, Network structure, Rheological model.
Como citar
Mukherjee, Kakali;
Prakash., Swatantra.
MODELLING OF HIGH ALUMINA BLAST FURNACE SLAG
RHEOLOGY
,
p. 881-892.
In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking,
Rio de Jabeiro,
2012.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-22169
