Assessing the quality of metallurgical coke by Raman spectroscopy

Rantitsch, Gerd; Bhattacharyya, Anrin; Schenk, Johannes; Lünsdorf, Nils Keno

doi:10.1016/j.coal.2014.05.005

Cited by 51 publications

(33 citation statements)

References 34 publications

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“…Bulk density of products -four tar contents were used, samples 1-4, 0 wt%; 5-8, 5 wt%; 9-12, 10 wt%; 13-16, 15 wt%. In each set the first sample (1,5,9,13) was carbonized at 900°C for 2 h, the second (2,6,10,14) at 950°C for 2 h, the third (3,7,11,15) at 900°C for 5 h and the fourth (4,8,12,16) at 950°C for 5 h. was considerably higher, the pore volume of a BF coke per unit mass was higher than that of the VBC products. The helium density of products from coal and briquettes was similar when no tar was added, but that of the coal derived products tended to be higher when tar was added.…”

Section: Carbonisation Conditionsmentioning

confidence: 98%

“…Reactivity of products -four tar contents were used, samples 1-4, 0 wt%; 5-8, 5 wt%; 9-12, 10 wt%; 13-16, 15 wt%. In each set the first sample (1,5,9,13) was carbonized at 900°C for 2 h, the second (2, 6, 10, 14) at 950°C for 2 h, the third (3,7,11,15) at 900°C for 5 h and the fourth (4,8,12,16) at 950°C for 5 h. Fig. 7.…”

Section: Carbonisation Conditionsmentioning

confidence: 99%

“…It is similar in structure and form to many brittle types of foam such as are found in ceramics and glasses [3]. It is produced in large, fused, strong pieces with a much lower reactivity (Coke Reactivity Index, CRI [4] of 18-40% [5,6]) than conventional brown coal chars and is therefore suitable to be used in a blast furnace to produce iron from iron ore. Reactivity and strength are the most important parameters that characterize the quality of the coke [7,8] and its behavior in a blast furnace [1].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An attempt to produce blast furnace coke from Victorian brown coal

Mollah

Jackson

Marshall

et al. 2015

Fuel

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Section: Carbonisation Conditionsmentioning

confidence: 98%

Section: Carbonisation Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An attempt to produce blast furnace coke from Victorian brown coal

Mollah

Jackson

Marshall

et al. 2015

Fuel

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“…Raman spectroscopy evaluates the organization degree of the carbonaceous constituents of coke [1], being a promising material property to optimize the use of this material in the blast furnace (e.g. [2]).…”

Section: Introductionmentioning

confidence: 99%

“…Among others, this property is an important factor influencing the Coke Reactivity Index (CRI) and Coke Strength after Reaction (CSR) values, used by steelmakers to maintain their blast furnace coke quality. Former work [1,3] demonstrates that a spectral parameter may be used in the future to predict confidently the coke quality by applying an effective and non-destructive method. Raman Spectroscopy was applied in experimental studies to examine the transformation of coal to coke [3] and to explore the transformation of coke within the blast furnace [1].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution of Blast Furnace Coke During Experimental Heating —The IFORS Approach

Rantitsch

Bhattacharyya

Schenk

2019

Berg Huettenmaenn Monatsh

Self Cite

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Blast furnace coke has been experimentally heated between 850°C and 1100°C by varying the gas composition and the alkali content of the raw coke. Raman spectroscopy and "Iterative Fitting of Raman Spectra" (IFORS) evaluates the microstructural change of coke during the experiments. The obtained results indicate a significant microstructural variation within a bulk sample. This variation controls significantly the coke quality as estimated from standard experiments (23.9 < CRI > 38.3). A bulk sample with a CRI value <30 is composed dominantly of lumps showing a relatively low structural ordering. During experimental heating, the structural ordering of such lumps increases. A bulk sample with a CRI value >30 is composed dominantly of lumps showing a relatively high structural ordering. During experimental heating, the structural state of such lumps remains unchanged unless a strong reaction is induced by adding alkaline elements. It is supposed that, under laboratory conditions, thermal and chemical energy, affecting a microstructurally low-ordered coke, first reorganizes the structural state of the individual coke lumps, retarding the onset of the Boudouard reaction.

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Promotion impact of different strontium doping on Ni‐9La+Zr catalyst for dry reforming of methane

Ibrahim,

Al‐Fatesh,

Alwadai

et al. 2023

Energy Science & Engineering

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The potential dry reforming of methane technology allows for the synthesis of syngas from methane and carbon dioxide. Numerous investigations have been conducted on developing catalysts with exceptional activity and stability. Carbon deposition causes severe deactivation in typical nickel‐based catalysts, which is one of the most prevalent and important problems. In this study, methane was dry‐reformed over 5 wt.% Ni+xSr‐9La+Zr (x = 0–4 wt.%) catalysts for 7.5 h at 700°C and ambient pressure in a tubular fixed‐bed reactor. According to the weight percent of Sr loading, the features of the material's texture, morphology, and catalysis were investigated. N2‐physisorption, H2‐temperature programmed reduction, X‐ray diffraction, Raman, and TEM were used to evaluate the physicochemical characteristics of the catalysts. N2‐physisorption research revealed that changing the weight percentage loading of the Sr promoter had little effect on the textural qualities. The overall number of reducible NiO‐interacting species over the catalyst surface increased with increasing Sr loading. The 5Ni+2Sr‐9La+Zr catalyst exhibited the optimum CH4 and CO2 conversions of 62.9%–65.9% and 69.1%–70.3%, respectively, and the lowest deactivation factor of 4.7.

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Assessing the quality of metallurgical coke by Raman spectroscopy

Cited by 51 publications

References 34 publications

An attempt to produce blast furnace coke from Victorian brown coal

An attempt to produce blast furnace coke from Victorian brown coal

Microstructural Evolution of Blast Furnace Coke During Experimental Heating —The IFORS Approach

Promotion impact of different strontium doping on Ni‐9La+Zr catalyst for dry reforming of methane

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