ISSN 2594-357X
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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.
Palavras-chave
High phosphorus oolitic hematite; Rotary hearth furnace; Iron nugget; Dephosphorization.
High phosphorus oolitic hematite; Rotary hearth furnace; Iron nugget; Dephosphorization.
Como citar
Han, Hongliang;
Duan., Dongping.
DEPHOSPHORIZATION TECHNOLOGY OF HIGH
PHOSPHORUS OOLITIC HEMATITE BY ROTARY HEARTH
FURNACE IRON NUGGET PROCESS
,
p. 1577-1585.
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-22262
