Title

RESEARCH ON SELF-REDUCTION OF IRON-BEARING DUST FOR IRON NUGGETS

RESEARCH ON SELF-REDUCTION OF IRON-BEARING DUST FOR IRON NUGGETS

Authorship

Ju-yan, Li; Em, Tang; Qiang, Zhou; Xiao-wei, Wang; Zheng-liang., Xue

Ju-yan, Li

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Em, Tang

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Qiang, Zhou

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Xiao-wei, Wang

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Zheng-liang., Xue

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DOI

10.5151/2594-357X-22087

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Abstract

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.

Keywords

Iron-bearing dust; Pellets; Self-reduction; Iron nuggets.

Iron-bearing dust; Pellets; Self-reduction; Iron nuggets.