Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor

Copper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential oxygen carrier (OC), which can be applied in chemical looping technology. This research proposed to use the...

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Autores principales:	Yan Feng, Qianhui Yang, Zongliang Zuo, Siyi Luo, Dongdong Ren, Huan Lin
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	copper slag granulation oxygen carrier calcination redox General Works A
Acceso en línea:	https://doaj.org/article/fd2500147bae4f148a0306c2eae78663
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spelling	oai:doaj.org-article:fd2500147bae4f148a0306c2eae786632021-11-22T04:25:18ZStudy on Preparation of Oxygen Carrier Using Copper Slag as Precursor2296-598X10.3389/fenrg.2021.781914https://doaj.org/article/fd2500147bae4f148a0306c2eae786632021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenrg.2021.781914/fullhttps://doaj.org/toc/2296-598XCopper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential oxygen carrier (OC), which can be applied in chemical looping technology. This research proposed to use the granulated copper slag particles as precursor to produce oxygen carrier. Through this method, waste heat of the high-temperature slag can be fully recovered, eliminating the complicated copper slag pretreatment process. In this paper, the reactivity of granulated copper slag after redox calcination was studied by X-ray diffractometer (XRD) and Scanning Electron Microscope (SEM), the highest reactivity occurred at 1,000°C. In addition, the oxygen release and absorption performance of OC were tested in thermal-gravimetric (TG). According to theoretical calculations, the mass loss caused by oxygen release accounts for 70.57% of the total loss and the mass reached by 4.2% at 1,000°C in oxygen absorption experiment. The copper slag modified through calcining in redox condition was proved to be a promising oxygen carrier in chemical looping process. Furthermore, the performance research on OC also provided theoretical references for the operating paraments of OC circulating between air reactor and fuel reactor in practical chemical looping processes.Yan FengQianhui YangZongliang ZuoSiyi LuoDongdong RenHuan LinFrontiers Media S.A.articlecopper slaggranulationoxygen carriercalcinationredoxGeneral WorksAENFrontiers in Energy Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	copper slag granulation oxygen carrier calcination redox General Works A
spellingShingle	copper slag granulation oxygen carrier calcination redox General Works A Yan Feng Qianhui Yang Zongliang Zuo Siyi Luo Dongdong Ren Huan Lin Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
description	Copper slag, an important by-product of the copper smelting process, is mainly composed of 2FeO SiO2, Fe3O4, and SiO2. Due to the sufficient metal oxides, copper slag is regard as a potential oxygen carrier (OC), which can be applied in chemical looping technology. This research proposed to use the granulated copper slag particles as precursor to produce oxygen carrier. Through this method, waste heat of the high-temperature slag can be fully recovered, eliminating the complicated copper slag pretreatment process. In this paper, the reactivity of granulated copper slag after redox calcination was studied by X-ray diffractometer (XRD) and Scanning Electron Microscope (SEM), the highest reactivity occurred at 1,000°C. In addition, the oxygen release and absorption performance of OC were tested in thermal-gravimetric (TG). According to theoretical calculations, the mass loss caused by oxygen release accounts for 70.57% of the total loss and the mass reached by 4.2% at 1,000°C in oxygen absorption experiment. The copper slag modified through calcining in redox condition was proved to be a promising oxygen carrier in chemical looping process. Furthermore, the performance research on OC also provided theoretical references for the operating paraments of OC circulating between air reactor and fuel reactor in practical chemical looping processes.
format	article
author	Yan Feng Qianhui Yang Zongliang Zuo Siyi Luo Dongdong Ren Huan Lin
author_facet	Yan Feng Qianhui Yang Zongliang Zuo Siyi Luo Dongdong Ren Huan Lin
author_sort	Yan Feng
title	Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
title_short	Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
title_full	Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
title_fullStr	Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
title_full_unstemmed	Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor
title_sort	study on preparation of oxygen carrier using copper slag as precursor
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/fd2500147bae4f148a0306c2eae78663
work_keys_str_mv	AT yanfeng studyonpreparationofoxygencarrierusingcopperslagasprecursor AT qianhuiyang studyonpreparationofoxygencarrierusingcopperslagasprecursor AT zongliangzuo studyonpreparationofoxygencarrierusingcopperslagasprecursor AT siyiluo studyonpreparationofoxygencarrierusingcopperslagasprecursor AT dongdongren studyonpreparationofoxygencarrierusingcopperslagasprecursor AT huanlin studyonpreparationofoxygencarrierusingcopperslagasprecursor
_version_	1718418259896696832

Study on Preparation of Oxygen Carrier Using Copper Slag as Precursor

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