The Discrepancy between Coal Ash from Muffle, Circulating Fluidized Bed (CFB), and Pulverized Coal (PC) Furnaces, with a Focus on the Recovery of Iron and Rare Earth Elements
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
The Discrepancy between Coal Ash from Muffle, Circulating Fluidized Bed (CFB), and Pulverized Coal (PC) Furnaces, with a Focus on the Recovery of Iron and Rare Earth Elements
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| Автор |
Pan, J.
Long, X. Zhang, L. Shoppert, A. Valeev, D. Zhou, C. Liu, X. |
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| Тематика |
CIRCULATING FLUIDIZED BED FURNACE
COAL ASH MAGNETIC SEPARATION MODE OF OCCURRENCE PULVERIZED COAL FURNACE RARE EARTH ELEMENTS RECOVERY COAL COAL COMBUSTION COAL DEPOSITS FLUIDIZED BED COMBUSTION FLUIDIZED BED PROCESS FLUIDIZED BEDS IRON MAGNETIC SEPARATION MAGNETITE METAL RECOVERY RARE EARTH ELEMENTS RARE EARTHS ASH SAMPLES CIRCULATING FLUIDIZED BED CIRCULATING FLUIDIZED BED FURNACE COMBUSTION FURNACES COMBUSTION PRO-CESS MODES OF OCCURRENCES PROPERTY PULVERIZED COAL FURNACE PULVERIZED COALS RARE-EARTHS COAL ASH |
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| Описание |
Coal ash (CA) is not only one of the most solid wastes from combustion, easily resulting in a series of concerns, but it is also an artificial deposit with considerable metals, such as iron and rare earth. The variation in the coal ash characteristics due to the origins, combustion process, and even storage environment has been hindering the metal utilization from coal ash. In this study, three ash sample from lab muffle, circulating fluidized bed (CFB), and pulverized coal (PC) furnace was derived for the discrepancy study from the combustion furnace, including properties, iron, and rare earth recovery. The origins of the coal feed samples have more of an effect on their properties than combustion furnaces. Magnetic separation is suitable for coal ash from PC because of the magnetite product, and the iron content is 58% in the Mag-1 fraction, with a yield of 3%. The particles in CA from CFB appear irregular and fragmental, while those from PC appear spherical with a smooth surface. The results of sequential chemical extraction and observation both indicated that the aluminosilicate phase plays an essential role in rare earth occurrences. Rare earth in CA from muffling and CFB is facilely leached, with a recovery of approximately 50%, which is higher than that from PC ash. This paper aims to offer a reference to easily understand the difference in metal recovery from coal ash. © 2022 by the authors.
National Natural Science Foundation of China, NSFC, (51974309, 52204292, 92062109) Russian Academy of Sciences, РАН, (FMUS-2019-24) China Postdoctoral Science Foundation, (2022M723393) National Postdoctoral Program for Innovative Talents, (BX2021362) National Key Research and Development Program of China, NKRDPC, (2021YFC2902601) Funding text 1: This work was supported by the National Natural Science Foundation of China (No. 92062109, 52204292, and 51974309), the National Key R&D Program of China (No. 2021YFC2902601), National Postdoctoral Program for Innovative Talents (No. BX2021362), and China Postdoctoral Science Foundation (2022M723393). Funding text 2: We are very grateful to all the editors and reviewers who have helped us improve and publish this paper. Dmitry Valeev thanks the Project of the State Assignment (Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences, No. FMUS-2019-24). |
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| Дата |
2024-04-08T11:06:07Z
2024-04-08T11:06:07Z 2022 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Pan, J, Long, X, Zhang, L, Shoppert, A, Valeev, D, Zhou, C & Liu, X 2022, 'The Discrepancy between Coal Ash from Muffle, Circulating Fluidized Bed (CFB), and Pulverized Coal (PC) Furnaces, with a Focus on the Recovery of Iron and Rare Earth Elements', Materials, Том. 15, № 23, 8494. https://doi.org/10.3390/ma15238494
Pan, J., Long, X., Zhang, L., Shoppert, A., Valeev, D., Zhou, C., & Liu, X. (2022). The Discrepancy between Coal Ash from Muffle, Circulating Fluidized Bed (CFB), and Pulverized Coal (PC) Furnaces, with a Focus on the Recovery of Iron and Rare Earth Elements. Materials, 15(23), [8494]. https://doi.org/10.3390/ma15238494 1996-1944 Final All Open Access; Gold Open Access; Green Open Access https://www.mdpi.com/1996-1944/15/23/8494/pdf?version=1669706782 https://www.mdpi.com/1996-1944/15/23/8494/pdf?version=1669706782 http://elar.urfu.ru/handle/10995/131278 10.3390/ma15238494 85143789812 000896186400001 |
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| Язык |
en
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| Права |
Open access (info:eu-repo/semantics/openAccess)
cc-by https://creativecommons.org/licenses/by/4.0/ |
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| Формат |
application/pdf
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| Издатель |
MDPI
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| Источник |
Materials
Materials |
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