2011
DOI: 10.25249/0375-7536.2011412220227
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Caracterização de cinzas sulfatadas de carvão visando utilização na indústria de cimento - reconstrução mineralógica do carvão de Candiota (Brasil)

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Cited by 3 publications
(2 citation statements)
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References 7 publications
(6 reference statements)
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“…diffraction pattern obtained for the CFA sample (Fig.4) shows crystallographic phases composed by anhydrite (CaSO4), hematite (Fe2O3), mullite (Al6Si2O13) and, in majority, by quartz (SiO2).The XRD peak positioned at 26.6° (2 theta) corresponds to quartz, showing a significant presence of this mineral in the CFA matrix. The XRD results are corroborated with the data presented in the work of Santana et al[20]. The pattern suggests the presence of a low concentration of impurities in CFA.…”
supporting
confidence: 88%
“…diffraction pattern obtained for the CFA sample (Fig.4) shows crystallographic phases composed by anhydrite (CaSO4), hematite (Fe2O3), mullite (Al6Si2O13) and, in majority, by quartz (SiO2).The XRD peak positioned at 26.6° (2 theta) corresponds to quartz, showing a significant presence of this mineral in the CFA matrix. The XRD results are corroborated with the data presented in the work of Santana et al[20]. The pattern suggests the presence of a low concentration of impurities in CFA.…”
supporting
confidence: 88%
“…Brazil is among the countries with the largest mineral coal reserves, and the largest national reserve is located in the southern region of the country. The Candiota region is regarded the most important coal mine in the country, accounting for about 40% of the national coal reserve [6][7][8], in this region there is one coal-fired power plant and two coal surface-mining operators [9,10]. Candiota coal is of low quality; consequently, the emission levels of atmospheric pollutants are higher than those from similar plants elsewhere [11,12].…”
Section: Introductionmentioning
confidence: 99%