Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles
The bulk density of the anodes affects the energy consumption and associated carbon emissions of the calcined anodes over the course of the Hall-Héroult process. The bulk density of the anode mainly depends on the compaction density of calcined coke particles. In this paper, the vibro-compacting pro...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/abafcc |
| _version_ | 1797746244093739008 |
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| author | Wenyuan Hou Hesong Li Mao Li Benjun Cheng |
| author_facet | Wenyuan Hou Hesong Li Mao Li Benjun Cheng |
| author_sort | Wenyuan Hou |
| collection | DOAJ |
| description | The bulk density of the anodes affects the energy consumption and associated carbon emissions of the calcined anodes over the course of the Hall-Héroult process. The bulk density of the anode mainly depends on the compaction density of calcined coke particles. In this paper, the vibro-compacting process of calcined coke particles is simulated using discrete element method. The particle behavior during vibro-compacting process and the inter-particle contact information with different ratios of particle size grading are investigated. The effects of different ratios of particle size grading on the compaction density and microstructure are studied. The critical average diameter which can distinguish whether the compaction density meets standard requirement is first proposed and obtained. The triangular coordinate graphical is introduced to optimize the ratio of particle size grading which is different from conventional method. The results show that the larger the proportion of coarse particle and medium particle, the more large voids between particles, and the increase of fine particle can effectively fill the inter-particle gap. The critical average diameter of calcined coke particles is 2.26 mm, and average diameter less than 2.26 mm can meet the standard requirement. The optimal ratio of particle size grading is 46% for coarse particle, 12% for medium particle and 42% for fine particle. |
| first_indexed | 2024-03-12T15:35:04Z |
| format | Article |
| id | doaj.art-22d6508e9bca4bdd800bdd09d9f065f9 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:35:04Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-22d6508e9bca4bdd800bdd09d9f065f92023-08-09T16:15:30ZengIOP PublishingMaterials Research Express2053-15912020-01-017808560510.1088/2053-1591/abafccEffects and optimization of ratio of particle size grading on compaction density of calcined coke particlesWenyuan Hou0https://orcid.org/0000-0002-5362-6678Hesong Li1Mao Li2Benjun Cheng3School of Energy Science and Engineering, Central South University , Changsha 410083, People’s Republic of ChinaSchool of Energy Science and Engineering, Central South University , Changsha 410083, People’s Republic of ChinaSchool of Energy Science and Engineering, Central South University , Changsha 410083, People’s Republic of ChinaSchool of Energy Science and Engineering, Central South University , Changsha 410083, People’s Republic of ChinaThe bulk density of the anodes affects the energy consumption and associated carbon emissions of the calcined anodes over the course of the Hall-Héroult process. The bulk density of the anode mainly depends on the compaction density of calcined coke particles. In this paper, the vibro-compacting process of calcined coke particles is simulated using discrete element method. The particle behavior during vibro-compacting process and the inter-particle contact information with different ratios of particle size grading are investigated. The effects of different ratios of particle size grading on the compaction density and microstructure are studied. The critical average diameter which can distinguish whether the compaction density meets standard requirement is first proposed and obtained. The triangular coordinate graphical is introduced to optimize the ratio of particle size grading which is different from conventional method. The results show that the larger the proportion of coarse particle and medium particle, the more large voids between particles, and the increase of fine particle can effectively fill the inter-particle gap. The critical average diameter of calcined coke particles is 2.26 mm, and average diameter less than 2.26 mm can meet the standard requirement. The optimal ratio of particle size grading is 46% for coarse particle, 12% for medium particle and 42% for fine particle.https://doi.org/10.1088/2053-1591/abafcccalcined cokevibro-compacting processcompaction densitytriangular coordinate graphcarbon anode |
| spellingShingle | Wenyuan Hou Hesong Li Mao Li Benjun Cheng Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles Materials Research Express calcined coke vibro-compacting process compaction density triangular coordinate graph carbon anode |
| title | Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| title_full | Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| title_fullStr | Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| title_full_unstemmed | Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| title_short | Effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| title_sort | effects and optimization of ratio of particle size grading on compaction density of calcined coke particles |
| topic | calcined coke vibro-compacting process compaction density triangular coordinate graph carbon anode |
| url | https://doi.org/10.1088/2053-1591/abafcc |
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