Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover
Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories....
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Wu, Yingjiang [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2019 |
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| Anmerkung: |
© The Minerals, Metals & Materials Society and ASM International 2019 |
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| Übergeordnetes Werk: |
Enthalten in: Metallurgical and materials transactions / B - Springer US, 1994, 50(2019), 2 vom: 03. Jan., Seite 808-815 |
|---|---|
| Übergeordnetes Werk: |
volume:50 ; year:2019 ; number:2 ; day:03 ; month:01 ; pages:808-815 |
| Links: |
|---|
| DOI / URN: |
10.1007/s11663-018-1498-y |
|---|
| Katalog-ID: |
OLC2059791677 |
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| 245 | 1 | 0 | |a Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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| 520 | |a Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. | ||
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10.1007/s11663-018-1498-y doi (DE-627)OLC2059791677 (DE-He213)s11663-018-1498-y-p DE-627 ger DE-627 rakwb eng 620 660 VZ Wu, Yingjiang verfasserin aut Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society and ASM International 2019 Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. Song, Shengqiang aut Xue, Zhengliang aut Nath, Mithun aut Enthalten in Metallurgical and materials transactions / B Springer US, 1994 50(2019), 2 vom: 03. Jan., Seite 808-815 (DE-627)182203832 (DE-600)1186125-3 (DE-576)038889196 1073-5615 nnns volume:50 year:2019 number:2 day:03 month:01 pages:808-815 https://doi.org/10.1007/s11663-018-1498-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4319 AR 50 2019 2 03 01 808-815 |
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10.1007/s11663-018-1498-y doi (DE-627)OLC2059791677 (DE-He213)s11663-018-1498-y-p DE-627 ger DE-627 rakwb eng 620 660 VZ Wu, Yingjiang verfasserin aut Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society and ASM International 2019 Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. Song, Shengqiang aut Xue, Zhengliang aut Nath, Mithun aut Enthalten in Metallurgical and materials transactions / B Springer US, 1994 50(2019), 2 vom: 03. Jan., Seite 808-815 (DE-627)182203832 (DE-600)1186125-3 (DE-576)038889196 1073-5615 nnns volume:50 year:2019 number:2 day:03 month:01 pages:808-815 https://doi.org/10.1007/s11663-018-1498-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4319 AR 50 2019 2 03 01 808-815 |
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10.1007/s11663-018-1498-y doi (DE-627)OLC2059791677 (DE-He213)s11663-018-1498-y-p DE-627 ger DE-627 rakwb eng 620 660 VZ Wu, Yingjiang verfasserin aut Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society and ASM International 2019 Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. Song, Shengqiang aut Xue, Zhengliang aut Nath, Mithun aut Enthalten in Metallurgical and materials transactions / B Springer US, 1994 50(2019), 2 vom: 03. Jan., Seite 808-815 (DE-627)182203832 (DE-600)1186125-3 (DE-576)038889196 1073-5615 nnns volume:50 year:2019 number:2 day:03 month:01 pages:808-815 https://doi.org/10.1007/s11663-018-1498-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4319 AR 50 2019 2 03 01 808-815 |
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10.1007/s11663-018-1498-y doi (DE-627)OLC2059791677 (DE-He213)s11663-018-1498-y-p DE-627 ger DE-627 rakwb eng 620 660 VZ Wu, Yingjiang verfasserin aut Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society and ASM International 2019 Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. Song, Shengqiang aut Xue, Zhengliang aut Nath, Mithun aut Enthalten in Metallurgical and materials transactions / B Springer US, 1994 50(2019), 2 vom: 03. Jan., Seite 808-815 (DE-627)182203832 (DE-600)1186125-3 (DE-576)038889196 1073-5615 nnns volume:50 year:2019 number:2 day:03 month:01 pages:808-815 https://doi.org/10.1007/s11663-018-1498-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4319 AR 50 2019 2 03 01 808-815 |
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10.1007/s11663-018-1498-y doi (DE-627)OLC2059791677 (DE-He213)s11663-018-1498-y-p DE-627 ger DE-627 rakwb eng 620 660 VZ Wu, Yingjiang verfasserin aut Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover 2019 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society and ASM International 2019 Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. Song, Shengqiang aut Xue, Zhengliang aut Nath, Mithun aut Enthalten in Metallurgical and materials transactions / B Springer US, 1994 50(2019), 2 vom: 03. Jan., Seite 808-815 (DE-627)182203832 (DE-600)1186125-3 (DE-576)038889196 1073-5615 nnns volume:50 year:2019 number:2 day:03 month:01 pages:808-815 https://doi.org/10.1007/s11663-018-1498-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_4319 AR 50 2019 2 03 01 808-815 |
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620 660 VZ Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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Wu, Yingjiang |
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Wu, Yingjiang Song, Shengqiang Xue, Zhengliang Nath, Mithun |
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formation mechanisms and leachability of hexavalent chromium in $ cr_{2} $$ o_{3} $-containing refractory castables of electric arc furnace cover |
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Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. © The Minerals, Metals & Materials Society and ASM International 2019 |
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Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. © The Minerals, Metals & Materials Society and ASM International 2019 |
| abstract_unstemmed |
Abstract Cr (III)-containing refractories are widely used as electric-arc furnace cover because of their excellent corrosion resistance properties. However, the formation of hexavalent chromium [Cr(VI)] remains a matter of concern during the service and subsequent disposal of the spent refractories. Moreover, the Cr(VI) formation mechanism and total amount of Cr(VI) generated are not clearly understood. In this study, samples from different parts of a spent electric arc furnace cover were collected from a local integrated steel plant. The phase composition, microstructure, formation and leachability of Cr(VI) were investigated using X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, and TRGS 613 leaching test (Technische Regeln für Gefahrstoffe-TRGS 613-October 2002)/multiple leaching tests. A Cr(VI)-containing phase namely $ CaCrO_{4} $ existed in the sample at a medium temperature range, while another Cr(VI)-containing phase namely hauyne ($ Ca_{4} $$ Al_{6} $$ CrO_{16} $) and a Cr(III)-containing phase ($ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution) formed in the high temperature region. Concentrations of Cr(VI) in the leachates (as in the TRGS 613 procedure) exceeded the European permissible limit. During the leaching tests in an acid condition, Cr(VI) was reduced by $ Fe^{2+} $, which was primarily derived from the dissolution of FeO in the samples, while more Cr(VI) leached out with distilled water. Formation of an $ Al_{2} $$ O_{3} $–$ Cr_{2} $$ O_{3} $ solid solution can inhibit Cr(VI) generation. © The Minerals, Metals & Materials Society and ASM International 2019 |
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Formation Mechanisms and Leachability of Hexavalent Chromium in $ Cr_{2} $$ O_{3} $-Containing Refractory Castables of Electric Arc Furnace Cover |
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