Quality of Some Nigerian Coals as Blending Stock in Metallurgical Coke Production

Nasirudeen, MB; Jauro, Aliyu

doi:10.4236/jmmce.2011.101007

Cited by 7 publications

(13 citation statements)

References 6 publications

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“…The TPCs determined were ignition temperature (T onset ), midpoint temperature (T mid ), maximum peak decomposition temperature (T max ), burnout or offset temperature (T off ), mass loss and residual mass (R M , %). (Nasirudeen and Jauro 2011). In contrast, the ash yield of Garin Maiganga coal is significantly lower than most Polish or American coals (Nasirudeen and Jauro 2011).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 92%

“…The VM of the analyzed coal samples (Except for the Enugu and Imiegba coals) is considerably higher than other Nigerian coals, such as Onyeama (35 wt%), Ogwashi (27.8 wt%), Ezimo (32 wt%), Inyi (30 wt%), and Ogboyoga (30.4 wt%) (Ogala et al 2012;Sambo 2009;Sonibare et al 2010). Moreover, the VM of the analyzed coal samples except that of Enugu and Imiegba coals is significantly higher than South African coal (dry basis= 5.6 wt% and wet basis=6.3 wt%) (Akinyemi et al 2012) and Polish coals (32.61 wt%) (Nasirudeen and Jauro 2011). Conversely, the VM of the studied coals is significantly lower than Hemrin coal seam (60.58 wt%) (Kettanah and Eble 2017).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 96%

“…(Nasirudeen and Jauro 2011). In contrast, the ash yield of Garin Maiganga coal is significantly lower than most Polish or American coals (Nasirudeen and Jauro 2011). The moisture contents of analyzed coals are considerably higher than the South African coal, but lower in ash yield than the South African coal (dry basis=94.43 wt % and wet basis=93.67 wt%) (Akinyemi et al 2012).…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

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Petrology, physicochemical and thermal analyses of selected cretaceous coals from the Benue Trough Basin in Nigeria

Akinyemi

Adebayo

Nyakuma

et al. 2020

Int J Coal Sci Technol

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Abundant coal resources that were previously neglected due to a crude oil boom need revitalisation and integration into the national electricity mix to address the energy demands of the Nigerian population. Selected coal samples from the Benue Trough sedimentary basin in Nigeria were examined by various techniques, including proximate and ultimate analyses, organic petrography, Fourier transform infrared ray spectroscopy, and thermogravimetric analysis. Based on vitrinite reflectance, the Lafia-Obi (OLB), Garin Maiganga (GMG), Imiegba (IMG), and Okaba (OKB) coals are classified as subbituminous, while the Lamja1 (LMJ1), Lamja2 (LMJ2) and Chikila (CHK) coals are high volatile B bituminous. The Enugu (ENG) coal is on the boundary between subbituminous and high volatile C bituminous. Organic petrographic results indicate vitrinite and fusinite contents steadily increase from the Lower Benue Trough coals to the Upper Benue Trough coals, while semifusinite and total mineral contents follow a reverse pattern. Thermal decomposition occurred in three stages, i.e., drying, devolatilization, and coke formation above 700°C; and the coal reactivity follows the following order, ENG [IMG[IGH[CHK[LMJ[OKB[GMG[LFB. The higher temperatures (above 900°C) are required to decompose the coals for efficient energy recovery. The LMJ1, LMJ2, OLB, CHK, GMG, and OKB coals can be exploited for electricity power generation. However, the Imeagha and Enugu coals are best suitable for both cement and power generation.

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Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 92%

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 96%

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

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Petrology, physicochemical and thermal analyses of selected cretaceous coals from the Benue Trough Basin in Nigeria

Akinyemi

Adebayo

Nyakuma

et al. 2020

Int J Coal Sci Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…The correlation study of elements in coal samples indicated that C has strong negative correlation with O, Fe, Na , S, Si and strong positive correlation with Al and Ca (r >= 0.80 ; p < 0.01) as shown in Table 5. The carbon content of a coal is essential for making mass of coke (Nasirudeen and Jauro, 2011).…”

Section: Elemental Characteristics Of Coalmentioning

confidence: 99%

Monitoring of arsenic fate with proximate parameters and elemental composition of coal from Thar coalfield, Pakistan

Ali

Kazi

Baig

et al. 2015

Journal of Geochemical Exploration

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“…The cupolas use foundry coke as source of fuel. There are different types of coke which includes metallurgical coke, foundry coke, formed coke, coke for electric furnaces and coke for resistor in graphitization furnaces [1][2][3][4][5][6]. All coke is made from coal but not all coals can be used to make coke.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Spent Prebaked Aluminium Carbon Anode as a Source of Fuel for Foundrymen

Andrews¹,

Gikunoo²,

Kyei-Fram³

et al. 2012

JMMCE

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Small scale foundries in Ghana are in search of a suitable coke for their foundry operations since there is no coal mine in Ghana. Two grades of spent prebaked aluminium carbon anodes (herein referred to as grade P and grade K), which are remnants from the aluminium electrolysis at Volta Aluminum Company (VALCO), an aluminium smelting company in Ghana, have been characterized to assess their quality and use as foundry coke. Proximate analysis and X-ray diffraction techniques have been used for their quality assessments. Coke grade P had lower moisture content, volatile matter and ash content compared to grade K. In both grades, sulphur and phosphorus contents were within requirements of a quality foundry coke. However, the volatile matter and ash contents of both grades were not satisfactory. Fixed carbon contents in both grades were below that of a quality foundry coke. Carbon structure of coke found in both grades is crystalline in nature. The crystalline width, Lc, was calculated to be 4.05 Å and 5.12 Å for grade K and P, respectively.

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Quality of Some Nigerian Coals as Blending Stock in Metallurgical Coke Production

Abstract: Two Nigerian coals, Lafia-Obi and Chikila were blended in the mass

Cited by 7 publications

References 6 publications

Petrology, physicochemical and thermal analyses of selected cretaceous coals from the Benue Trough Basin in Nigeria

Petrology, physicochemical and thermal analyses of selected cretaceous coals from the Benue Trough Basin in Nigeria

Monitoring of arsenic fate with proximate parameters and elemental composition of coal from Thar coalfield, Pakistan

Characterization of Spent Prebaked Aluminium Carbon Anode as a Source of Fuel for Foundrymen

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