Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle
The purpose of this work was to investigate the deterioration mechanism of an optimized Al2O3–MgO refractory castable during industrial trials. After structural optimization, the average corrosion rate of every cycle deceased to 0.29 mm/cycle from 0.46 mm/cycle. Corroded microstructure of the optimi...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Open Ceramics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539523001396 |
| _version_ | 1797390412189532160 |
|---|---|
| author | Junfeng Chen Yu Zhang Guangping Liu Guoping Wei Yi Zhao Wen Yan Nan Li |
| author_facet | Junfeng Chen Yu Zhang Guangping Liu Guoping Wei Yi Zhao Wen Yan Nan Li |
| author_sort | Junfeng Chen |
| collection | DOAJ |
| description | The purpose of this work was to investigate the deterioration mechanism of an optimized Al2O3–MgO refractory castable during industrial trials. After structural optimization, the average corrosion rate of every cycle deceased to 0.29 mm/cycle from 0.46 mm/cycle. Corroded microstructure of the optimized Al2O3–MgAl2O4 refractory castable after server 195 cycles was explored. It was indicated that the structural optimization led to an approximate 36% improvement in corrosion resistance than that of comparison one. An adhered slag layer comprising of (Fe, Mg)Al2O4 spinel was observed on the refractory's surface. Iron beans and iron/manganese oxides mainly occurred in the reaction layer, and several penetrating cracks occurred at the corroded interface which would cause potential structural spalling for refractory lining. Based on the observed microstructural characteristics, a corrosion mechanism of refractory lining in a commercial ladle was proposed. |
| first_indexed | 2024-03-08T23:10:18Z |
| format | Article |
| id | doaj.art-4f8c38ecb4db457b86a50baa83864d6b |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-03-08T23:10:18Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-4f8c38ecb4db457b86a50baa83864d6b2023-12-15T07:26:16ZengElsevierOpen Ceramics2666-53952023-12-0116100467Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladleJunfeng Chen0Yu Zhang1Guangping Liu2Guoping Wei3Yi Zhao4Wen Yan5Nan Li6The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China; Corresponding author.The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China; Corresponding author.Zhejiang Zili Holdings Co. Ltd, Shaoxing, Zhejiang, ChinaZhejiang Zili Holdings Co. Ltd, Shaoxing, Zhejiang, ChinaZhejiang Zili Holdings Co. Ltd, Shaoxing, Zhejiang, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, China; Corresponding author.The purpose of this work was to investigate the deterioration mechanism of an optimized Al2O3–MgO refractory castable during industrial trials. After structural optimization, the average corrosion rate of every cycle deceased to 0.29 mm/cycle from 0.46 mm/cycle. Corroded microstructure of the optimized Al2O3–MgAl2O4 refractory castable after server 195 cycles was explored. It was indicated that the structural optimization led to an approximate 36% improvement in corrosion resistance than that of comparison one. An adhered slag layer comprising of (Fe, Mg)Al2O4 spinel was observed on the refractory's surface. Iron beans and iron/manganese oxides mainly occurred in the reaction layer, and several penetrating cracks occurred at the corroded interface which would cause potential structural spalling for refractory lining. Based on the observed microstructural characteristics, a corrosion mechanism of refractory lining in a commercial ladle was proposed.http://www.sciencedirect.com/science/article/pii/S2666539523001396Al2O3–MgO refractoryRH refining ladleCorroded microstructureDegeneration mechanism |
| spellingShingle | Junfeng Chen Yu Zhang Guangping Liu Guoping Wei Yi Zhao Wen Yan Nan Li Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle Open Ceramics Al2O3–MgO refractory RH refining ladle Corroded microstructure Degeneration mechanism |
| title | Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle |
| title_full | Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle |
| title_fullStr | Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle |
| title_full_unstemmed | Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle |
| title_short | Deterioration mechanism of Al2O3–MgO refractory castable in RH refining ladle |
| title_sort | deterioration mechanism of al2o3 mgo refractory castable in rh refining ladle |
| topic | Al2O3–MgO refractory RH refining ladle Corroded microstructure Degeneration mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2666539523001396 |
| work_keys_str_mv | AT junfengchen deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT yuzhang deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT guangpingliu deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT guopingwei deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT yizhao deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT wenyan deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle AT nanli deteriorationmechanismofal2o3mgorefractorycastableinrhrefiningladle |