Investigation of the simultaneous injection of charcoal and coal into the blast furnace raceway by the 3D multiphase model

Jose Adilson de Castro, Hiroshi Nogami, Jun Ichiro Yagi, Cyro Takano, Marcelo Breda Mourão, Alexandre Jose da Silva

Research output: Contribution to conferencePaperpeer-review

4 Citations (Scopus)

Abstract

In this paper the multiphase transient multi-dimensional mathematical model of the blast furnace is applied to analyze the coke based blast furnace process operating with simultaneous injection of pulverized coal and charcoal. Simultaneous injection of pulverized charcoal and coal has an advantage of increasing combustion efficiency in the raceway and, in addition, allows the use of coal brands with higher sulfur content. Therefore, these technologies attract increasing attention for reducing the hot metal cost. Three cases of coke based operations were analyzed: a) with pulverized coal injection at 200kg/thm, b) with pulverized charcoal injection at 200kg/thm and c) with pulverized coal 200kg/thm and charcoal injection at 50kg/thm. Simulation results suggested that higher amount of pulverized coal could be obtained if the oxygen of the blast is enriched. These results also reveled that the coke rate can be decreased to around 210 kg/thm keeping smooth operation.

Original languageEnglish
Pages165-168
Number of pages4
Publication statusPublished - 2006 Dec 1
Event4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006 - Osaka, Japan
Duration: 2006 Nov 262006 Nov 30

Other

Other4th International Congress on the Science and Technology of Ironmaking, ICSTI 2006
CountryJapan
CityOsaka
Period06/11/2606/11/30

ASJC Scopus subject areas

  • Metals and Alloys

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