ISSN 2594-357X
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A new pig iron making process using iron-bearing dust containing coal as reducing agent has been studied. The pellets were heated rapidly in nitrogen at furnace temperature between 1,350°C and 1,400°C.Then the pellets were token out from the furnace and cooled to the room temperature after cooling to 700°C in the furnace. The result shows that the pellets spontaneously disperse when pellets basicity is more than 1.8. The best inner C/O mole ratio and basicity for iron and slag separating completely is 1.1and 2.0 respectively. Under the condition, iron yield was more than 95%, iron nuggets within 5-20mm was more than 80% and desulphurization rate was more than 85% when the reduction temperature is more than 1,350°C.
A new pig iron making process using iron-bearing dust containing coal as reducing agent has been studied. The pellets were heated rapidly in nitrogen at furnace temperature between 1,350°C and 1,400°C.Then the pellets were token out from the furnace and cooled to the room temperature after cooling to 700°C in the furnace. The result shows that the pellets spontaneously disperse when pellets basicity is more than 1.8. The best inner C/O mole ratio and basicity for iron and slag separating completely is 1.1and 2.0 respectively. Under the condition, iron yield was more than 95%, iron nuggets within 5-20mm was more than 80% and desulphurization rate was more than 85% when the reduction temperature is more than 1,350°C.
Palavras-chave
Iron-bearing dust; Pellets; Self-reduction; Iron nuggets.
Iron-bearing dust; Pellets; Self-reduction; Iron nuggets.
Como citar
Ju-yan, Li;
Em, Tang;
Qiang, Zhou;
Xiao-wei, Wang;
Zheng-liang., Xue.
RESEARCH ON SELF-REDUCTION OF IRON-BEARING
DUST FOR IRON NUGGETS
,
p. 244-252.
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-22087
