Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths
Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Yurkov, A. A. [verfasserIn] |
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| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2008 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media, Inc. 2008 |
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| Übergeordnetes Werk: |
Enthalten in: Refractories and industrial ceramics - Springer US, 1996, 49(2008), 2 vom: März, Seite 90-98 |
|---|---|
| Übergeordnetes Werk: |
volume:49 ; year:2008 ; number:2 ; month:03 ; pages:90-98 |
| Links: |
|---|
| DOI / URN: |
10.1007/s11148-008-9033-3 |
|---|
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OLC2071579585 |
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| 520 | |a Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. | ||
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10.1007/s11148-008-9033-3 doi (DE-627)OLC2071579585 (DE-He213)s11148-008-9033-3-p DE-627 ger DE-627 rakwb eng 670 VZ Yurkov, A. A. verfasserin aut Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2008 Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. Cryolite Premature Shutdown Aluminum Plant Electrolytic Bath Liquidus Isotherm Khramenko, S. A. aut Borisov, V. I. aut Enthalten in Refractories and industrial ceramics Springer US, 1996 49(2008), 2 vom: März, Seite 90-98 (DE-627)216727669 (DE-600)1341032-5 (DE-576)055479030 1083-4877 nnns volume:49 year:2008 number:2 month:03 pages:90-98 https://doi.org/10.1007/s11148-008-9033-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 AR 49 2008 2 03 90-98 |
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10.1007/s11148-008-9033-3 doi (DE-627)OLC2071579585 (DE-He213)s11148-008-9033-3-p DE-627 ger DE-627 rakwb eng 670 VZ Yurkov, A. A. verfasserin aut Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2008 Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. Cryolite Premature Shutdown Aluminum Plant Electrolytic Bath Liquidus Isotherm Khramenko, S. A. aut Borisov, V. I. aut Enthalten in Refractories and industrial ceramics Springer US, 1996 49(2008), 2 vom: März, Seite 90-98 (DE-627)216727669 (DE-600)1341032-5 (DE-576)055479030 1083-4877 nnns volume:49 year:2008 number:2 month:03 pages:90-98 https://doi.org/10.1007/s11148-008-9033-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 AR 49 2008 2 03 90-98 |
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10.1007/s11148-008-9033-3 doi (DE-627)OLC2071579585 (DE-He213)s11148-008-9033-3-p DE-627 ger DE-627 rakwb eng 670 VZ Yurkov, A. A. verfasserin aut Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2008 Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. Cryolite Premature Shutdown Aluminum Plant Electrolytic Bath Liquidus Isotherm Khramenko, S. A. aut Borisov, V. I. aut Enthalten in Refractories and industrial ceramics Springer US, 1996 49(2008), 2 vom: März, Seite 90-98 (DE-627)216727669 (DE-600)1341032-5 (DE-576)055479030 1083-4877 nnns volume:49 year:2008 number:2 month:03 pages:90-98 https://doi.org/10.1007/s11148-008-9033-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 AR 49 2008 2 03 90-98 |
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10.1007/s11148-008-9033-3 doi (DE-627)OLC2071579585 (DE-He213)s11148-008-9033-3-p DE-627 ger DE-627 rakwb eng 670 VZ Yurkov, A. A. verfasserin aut Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2008 Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. Cryolite Premature Shutdown Aluminum Plant Electrolytic Bath Liquidus Isotherm Khramenko, S. A. aut Borisov, V. I. aut Enthalten in Refractories and industrial ceramics Springer US, 1996 49(2008), 2 vom: März, Seite 90-98 (DE-627)216727669 (DE-600)1341032-5 (DE-576)055479030 1083-4877 nnns volume:49 year:2008 number:2 month:03 pages:90-98 https://doi.org/10.1007/s11148-008-9033-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 AR 49 2008 2 03 90-98 |
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10.1007/s11148-008-9033-3 doi (DE-627)OLC2071579585 (DE-He213)s11148-008-9033-3-p DE-627 ger DE-627 rakwb eng 670 VZ Yurkov, A. A. verfasserin aut Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths 2008 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2008 Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. Cryolite Premature Shutdown Aluminum Plant Electrolytic Bath Liquidus Isotherm Khramenko, S. A. aut Borisov, V. I. aut Enthalten in Refractories and industrial ceramics Springer US, 1996 49(2008), 2 vom: März, Seite 90-98 (DE-627)216727669 (DE-600)1341032-5 (DE-576)055479030 1083-4877 nnns volume:49 year:2008 number:2 month:03 pages:90-98 https://doi.org/10.1007/s11148-008-9033-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 AR 49 2008 2 03 90-98 |
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effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths |
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Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths |
| abstract |
Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. © Springer Science+Business Media, Inc. 2008 |
| abstractGer |
Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. © Springer Science+Business Media, Inc. 2008 |
| abstract_unstemmed |
Abstract Premature shutdown of electrolytic baths after a short service life leads to an increase in the cost of aluminum and serious economic losses. The most important element governing the service life of an electrolytic bath is the hearth that is lined with refractory hearth blocks. Presence of one concealed crack, that is exposed in the start-up period, may lead to failure of the whole electrolyzer in the first year of service. There are many producers and users of hearth blocks, and there are many specifications for cathode hearth blocks, although the requirements for them are selected in a very empirical way without considering actual service conditions. Scientifically based requirements for the material of hearth blocks is still in the formation stage. In 2004 in four aluminum enterprises under major repair hearth blocks were used from nine different producers that made it possible during evaluation of the statistics for shutting down young baths to determine the effect of the structure and properties of hearth blocks on the service life of electrolyzers and to formulate requirements for hearth block material. The contribution of permeable porous cathode carbon blocks on premature shutdown of electrolyzers by a mechanism of hearth uplift due to formation of a lens of electrolyte and refractory reaction products is demonstrated. Critical gas permeability and the maximum size of permeable pores in refractory hearth units are determined. Applicability of the first and second Hasselman criteria for the heat resistance of hearth block materials is demonstrated for predicting shutdown of young baths by a crack development mechanism in blocks due to thermomechanical stresses. © Springer Science+Business Media, Inc. 2008 |
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| title_short |
Effect of the structure and properties of hearth carbon blocks on premature shutdown of electrolytic baths |
| url |
https://doi.org/10.1007/s11148-008-9033-3 |
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| author2 |
Khramenko, S. A. Borisov, V. I. |
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Khramenko, S. A. Borisov, V. I. |
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| doi_str |
10.1007/s11148-008-9033-3 |
| up_date |
2024-07-04T03:46:32.180Z |
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