Título

TITANIUM GOIÁS - DECADES OF EXPERIENCE IN MARKETING OF ILMENITE FOR BLAST FURNACES IN BRAZIL

TITANIUM GOIÁS - DECADES OF EXPERIENCE IN MARKETING OF ILMENITE FOR BLAST FURNACES IN BRAZIL

Autoria

Pereira, Jorge Luiz Gonçalves; Campanholo, Basílio Antônio; Silva, Marcus Brandão de Lima e; Silva, Armênio de Lima e; Silva., Rogério Brandão de Lima e

DOI

10.5151/2594-357X-22139

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Resumo

Since the late 90’s, most of the large blast furnaces of steel plants in Brazil, following the global trend, surpassed 2.3 t/day.m3 of productivity. The intensive use of oxygen enrichment of the blast for use of auxiliary fuels injections in the tuyeres helps to achieve unimagined productivity. Even in the 90's, AK Steel, U.S., reaches in his Blast Furnace No. 3, the astonishing pace of 4.0 t/24 hours.m3 (work volume) of productivity, showing that it can operate continuously blast furnaces with productivity up 3.0 t/day.m3. However, experience has shown that these results relates to the cost too expensive wear of the walls of the crucible (hearth) and its consequences in the short and medium term (loss of revenue and increased cost of production). This paper aims to show that it is possible to operate continuously and efficiently blast furnaces with high productivity, without the crucible becomes a limiting factor of the process, even after have already suffered considerable wear. To this end, the long experience of Titanium Goiás with marketing titanium magnetite (ilmenite) for large blast furnaces are presented as evidence of the effectiveness of titanium exclusively in charge of the blast furnace, as a protective agent of the crucible.

 

Since the late 90’s, most of the large blast furnaces of steel plants in Brazil, following the global trend, surpassed 2.3 t/day.m3 of productivity. The intensive use of oxygen enrichment of the blast for use of auxiliary fuels injections in the tuyeres helps to achieve unimagined productivity. Even in the 90's, AK Steel, U.S., reaches in his Blast Furnace No. 3, the astonishing pace of 4.0 t/24 hours.m3 (work volume) of productivity, showing that it can operate continuously blast furnaces with productivity up 3.0 t/day.m3. However, experience has shown that these results relates to the cost too expensive wear of the walls of the crucible (hearth) and its consequences in the short and medium term (loss of revenue and increased cost of production). This paper aims to show that it is possible to operate continuously and efficiently blast furnaces with high productivity, without the crucible becomes a limiting factor of the process, even after have already suffered considerable wear. To this end, the long experience of Titanium Goiás with marketing titanium magnetite (ilmenite) for large blast furnaces are presented as evidence of the effectiveness of titanium exclusively in charge of the blast furnace, as a protective agent of the crucible.

Palavras-chave

Titanium; Ilmenite; Titanium magnetite; Crucible (hearth); Blast furnace.

Titanium; Ilmenite; Titanium magnetite; Crucible (hearth); Blast furnace.