Basic oxygen furnace (BOF) slag cooling: Laboratory characteristics and prediction calculations

Gautier, Mathieu; Poirier, Jacques; Bodénan, Françoise; Franceschini, Gilles; Véron, Emmanuel

doi:10.1016/j.minpro.2013.05.002

Cited by 67 publications

(59 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a result, a small number of simple oxides, with large grain sizes, are observed in slowly solidifying slags. 39) Additionally, the large supply of thermal energy allows for restructuring of solids into thermodynamically favorable mineralogies and geometries. As T U increases, the number of solid nuclei and the compositional variety of nucleating minerals increases.…”

Section: Solidificationmentioning

confidence: 99%

“…Due to this feedback, homogeneous solidification is only successfully applied to small slag volume such as the < 2 mm diameter particles produced in the rotary cup atomization method (RCA). 41) Examination of water-impinged slag indicates it is not truly amorphous, 39) but rather polycrystalline with grain sizes on the order of a few micrometers; nevertheless, the rapid cooling suppresses the transition of β-Ca 2 SiO 4 to γ-Ca 2 SiO 4 , making waterimpinged slags suitable for use as ggbs.…”

Section: Solidificationmentioning

confidence: 99%

“…Cooling time from solidus temperature to ambient temperature was set as seconds (quench), minutes (heat recovery), and hours (natural cooling). The mineralogical composition for steel slags was based on the work of Gautier et al 39) and extended to iron slags using assumptions based on the underlying physical mechanisms as discussed in this paper. The effects of quenching on micromorphology were based on previously published work.…”

Section: Slag-based Co 2 Mineralization Efficiencymentioning

confidence: 99%

See 2 more Smart Citations

Effect of Solidification and Cooling Methods on the Efficacy of Slag as a Feedstock for CO<sub>2</sub> Mineralization

Myers

Nakagaki

2018

ISIJ Int.

View full text Add to dashboard Cite

Iron and steel making (ISM) slag is often utilized to partially offset CO 2 emissions associated with metal production. Currently, the primary recycling method for slag is as β-Ca 2 SiO 4 utilized in the cement industry, termed ground granulated blast furnace slag (ggbs). However, the cement market is not large enough to exploit the entirety of ISM slag as ggbs, relegating a large quantity of slag to reuse pathways with minor impacts on CO 2 reduction. Recent years have seen an increase in research into mineralizing CO 2 using the Ca and Mg content of ISM slags as a feedstock. Unfortunately, it has not been widely recognized that the solidification and cooling processes of slag dramatically effects its efficacy as a CO 2 mineralizing feedstock via modification of mineralogy, crystallinity, grain size, and micromorphology. This paper clarifies the key properties determining mineralization effectiveness and elucidates how to control these properties during the solidification and cooling process. The effect of solidification and cooling method on net CO 2 reduction is shown to be strongly dependent on solidification and cooling method along with the CO 2 intensity of energy generation.

show abstract

Section: Solidificationmentioning

confidence: 99%

Section: Solidificationmentioning

confidence: 99%

Section: Slag-based Co 2 Mineralization Efficiencymentioning

confidence: 99%

See 1 more Smart Citation

Effect of Solidification and Cooling Methods on the Efficacy of Slag as a Feedstock for CO<sub>2</sub> Mineralization

Myers

Nakagaki

2018

ISIJ Int.

View full text Add to dashboard Cite

show abstract

“…As fases presentes na escória sofrem uma influência significativa das velocidade de resfriamento [3]. No cálculo da viscosidade para escórias de alta basicidade, é necessário saber a quantidade de fases sólidas presentes.…”

Section: Fases Sólidas E Quantidade De Fases Sólidasunclassified

“…Figura 4 -Fases presentes na escória de BOF com condições de resfriamento de área industrial [3]. baixo ponto de fusão atuam como ligantes para aderências das fases de alto ponto de fusão [6].…”

Section: Fases Sólidas E Quantidade De Fases Sólidasunclassified

Otimização Da Escória No Processo “Slag Splashing”em Bof

Auad¹,

Castro²

2017

Anais Do Seminário De Aciaria, Fundição E Metalurgia De Não-Ferrosos

View full text Add to dashboard Cite

ResumoEste trabalho tem por objetivo avaliar as considerações mais importantes para a práticas do slag splashing, com respeito a adequação da escória, buscando otimizar as condições de contorno a serem consideradas para o uso da técnica com eficiência para a proteção do revestimento refratário em BOF (Basic Oxygem Furnace). Palavras-chave: Slag Splashing; Proteção do revestimento refratário; BOF; Condicionamento de escória. IMPROVEMENT OF SLAG AT "SLAG SPLASHING" PROCEDURE AT BOF AbstractThis paper intend to evaluate the most importante considerations related with slag splashing procedure regarding slag conditioning, in order to optimize the boundary condition to be consider for basic oxygen furnace lining wear rate decrease.

show abstract