2020
DOI: 10.3390/min10040323
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Mineralogical and Chemical Characteristics of Coal Ashes from Two High-Sulfur Coal-Fired Power Plants in Wuhai, Inner Mongolia, China

Abstract: The mineralogical and chemical characteristics of the feed coals and coal combustion products (CCPs) from two power plants (Xilaifeng and Damo) that consume coals from the Wuda Coalfield, Inner Mongolia, were investigated, using XRD, SEM–EDS, XRF, and ICP-MS. The feed coals from Xilaifeng and Damo are both of high ash yield (52.93% and 48.36%, respectively), and medium and high total sulfur content (2.22% and 3.32%, respectively). The minerals in the feed coals are primarily composed of kaolinite, quartz, illi… Show more

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Cited by 14 publications
(15 citation statements)
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References 75 publications
(78 reference statements)
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“…Similar dependence of the Li enrichment in fly ash on the ash content of the feed coals has been shown for feed coal-fly ash comparisons from India (Bhangare et al, 2011) and China (Dai et al, 2014;J. Li et al, 2012;Wang et al, 2019;Wei & Song, 2020), suggesting almost complete partitioning of the Li in the combusted coal into the resulting fly ash.…”
Section: Air-borne Emissions From Coal Combustion and Retention Of Lithium In Coal Combustion Residualssupporting
confidence: 70%
“…Similar dependence of the Li enrichment in fly ash on the ash content of the feed coals has been shown for feed coal-fly ash comparisons from India (Bhangare et al, 2011) and China (Dai et al, 2014;J. Li et al, 2012;Wang et al, 2019;Wei & Song, 2020), suggesting almost complete partitioning of the Li in the combusted coal into the resulting fly ash.…”
Section: Air-borne Emissions From Coal Combustion and Retention Of Lithium In Coal Combustion Residualssupporting
confidence: 70%
“…The slag also consists of nonmagnetic particles (see Table S1). The values of the content of the elements (Co, Ni, Cu, Zn, As, Ag, Cd, Sb, Pb) in the fly ash and in the slag generally do not differ from the content in the fly ash and the slag hitherto measured in other power stations in Poland [106,107], the north-east of Spain [108], India [16], Turkey [21,109], and China [25,110] (Table 2). The content of Co, Ni, Cu, Zn, Ag, and Pb in the fly ash and the Co content in the slag are the highest (similarly to the feed coal) in the combustion residues from PS-a, and the lowest in the residues from PS-b.…”
Section: General Petrographic and Geochemical Characteristics Of The Subject Of The Researchmentioning
confidence: 76%
“…Class F generally requires an addition of air entrainer, which is not required by the class C fly ash. When it comes to the application, class F is used in high SO 4 3− exposure conditions, has high fly ash content concrete mixes and is explored for the structural and HP concretes. Whereas class C fly ash is not suitable for high sulfate conditions, limited to low fly ash content concrete mixes are mainly used for the residential construction.…”
Section: Elemental Properties Of Fly Ashmentioning
confidence: 99%
“…It can be further converted to nanoalumina powders by several chemical methods, such as thermal decomposition [96], co-precipitation. The major fractions of fly ash are silica that can be extracted by both chemical (NaOH or KOH treatment) and microbial (bacterial and fungal) approaches [4]. Silica is extracted from the fly ash in the form of sodium silicate using chemical methods.…”
Section: Fly Ash As a Source Of Ferrous Alumina And Silicamentioning
confidence: 99%