Chemical and mineralogical characterization of highly and less reactive coal from Northern Natal and Venda-Pafuri coalfields in South Africa

Kataka, M. O.; Matiane, A.R.; Odhiambo, Beneah D. O.

doi:10.1016/j.jafrearsci.2017.10.019

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…The studies on the spontaneous combustion of coal have a long history. This research problem has been addressed, among others, by: (Berkowitz and Schein 1951;Bhattacharyya 1972;Falcon 1986;Singh 2013;Thomas and Fariborz 2000;Kataka et al 2018). The self-heating of coal leading to spontaneous combustion poses a serious threat during its mining, transport and storage (Misra and Singh 1994).…”

Section: Changes In the Spontaneous Combustion Tendency Of Humic Coal...mentioning

confidence: 99%

Gospodarka Surowcami Mineralnymi - Mineral Resources Management

Bielowicz

2020

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Section: Changes In the Spontaneous Combustion Tendency Of Humic Coal...mentioning

confidence: 99%

Gospodarka Surowcami Mineralnymi - Mineral Resources Management

Bielowicz

2020

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“…The question of critical raw materials in coal has been discussed by Dai et al [17,18], Lefticariu et al [19], Lin et al [20], Seredin and Dai [21], and Tang et al [22]. The content of critical raw materials in coal ashes was analyzed by, among others, Bielowicz et al [23], Dai et al [24], Franus et al [25], Kataka et al [26], Kolker et al [27], and Valentim et al [28]. Based on the literature data on the content of critical elements in coal and its ashes, it can be unequivocally stated that further studies are required.…”

Section: Introductionmentioning

confidence: 99%

Ash Characteristics and Selected Critical Elements (Ga, Sc, V) in Coal and Ash in Polish Deposits

Bielowicz

2020

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The chemical composition of coal ash and the content of the critical elements Ga, Sc, and V in coal and ash are examined herein. In this study, lignite and bituminous coal from Polish deposits were used. The coals were subjected to ultimate and proximate analysis; the petrographic composition was determined based on maceral groups. The chemical composition of ash and the content of critical elements were determined using ICP-MS. The obtained results were correlated and Pearson’s linear correlation coefficient was determined. Based on the correlation analysis, the relationship between the chemical composition of ash and the proximate and ultimate analyses was demonstrated. The content of selected critical elements in the tested deposits was lower than the Clarke value in coal. However, in some deposits these contents are much higher in coal ashes. The higher levels of Ga, V, and Sc in the ash are associated with Al2O3. Therefore, it can be stated that ashes can be a potential source of some raw materials. The highest concentrations of critical elements in coal and ash were recorded in the Lublin Coal Basin. Supra-Clarke contents of Ga, V, and Sc were recorded in the Bogdanka coal mine.

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