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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars


ISSN 2594-357X

Title

DEPHOSPHORIZATION TECHNOLOGY OF HIGH PHOSPHORUS OOLITIC HEMATITE BY ROTARY HEARTH FURNACE IRON NUGGET PROCESS

DEPHOSPHORIZATION TECHNOLOGY OF HIGH PHOSPHORUS OOLITIC HEMATITE BY ROTARY HEARTH FURNACE IRON NUGGET PROCESS

Authorship

DOI

10.5151/2594-357X-22262

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Abstract

In this study, physical, chemical and microscopic characteristics of high phosphorus oolitic hematite were investigated firstly. Based on which, the reduction mechanism of high phosphorus hematite was discussed. And the experiments of high phosphorus hematite used in rotary hearth furnace iron nugget processes were studied. The results showed that high temperature, low basicity and high carbon content is conducive for the reduction of apatite, but not conducive to the removal of phosphorus. Through optimization of process parameters, dephosphorization rate of high phosphorus hematite is up to 85% by iron nugget process. This study can provide theoretical and technical basis on economical and rational use of high phosphorus oolitic hematite.

 

In this study, physical, chemical and microscopic characteristics of high phosphorus oolitic hematite were investigated firstly. Based on which, the reduction mechanism of high phosphorus hematite was discussed. And the experiments of high phosphorus hematite used in rotary hearth furnace iron nugget processes were studied. The results showed that high temperature, low basicity and high carbon content is conducive for the reduction of apatite, but not conducive to the removal of phosphorus. Through optimization of process parameters, dephosphorization rate of high phosphorus hematite is up to 85% by iron nugget process. This study can provide theoretical and technical basis on economical and rational use of high phosphorus oolitic hematite.

Keywords

High phosphorus oolitic hematite; Rotary hearth furnace; Iron nugget; Dephosphorization.

High phosphorus oolitic hematite; Rotary hearth furnace; Iron nugget; Dephosphorization.

How to cite

Han, Hongliang; Duan., Dongping. DEPHOSPHORIZATION TECHNOLOGY OF HIGH PHOSPHORUS OOLITIC HEMATITE BY ROTARY HEARTH FURNACE IRON NUGGET PROCESS, p. 1577-1585. In: 42nd ABM Ironmaking Seminar / 13rd ABM Iron Ore Symposium / 6th International Congress on the Science and Technology of Ironmaking, Rio de Jabeiro, 2012.
ISSN: 2594-357X, DOI 10.5151/2594-357X-22262