Energy analysis of the convective drying of iron ore fines
Drying operations in iron ore processing plants have a particularly high energy demand due to the massive solid flow rates employed in this industry. A 33 full-factorial design was applied to investigate the effects of air temperature, airflow velocity, and solids load on the drying time and the spe...
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| Format: | Article |
| Language: | English |
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Association of the Chemical Engineers of Serbia
2023-01-01
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| Series: | Chemical Industry and Chemical Engineering Quarterly |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/1451-9372/2023/1451-93722200026S.pdf |
| _version_ | 1827929512683241472 |
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| author | e Souza Amarílis Severino de Souza Pinto Thiago César de Sarkis Alfredo Moisés de Pádua Thiago Faggion Béttega Rodrigo |
| author_facet | e Souza Amarílis Severino de Souza Pinto Thiago César de Sarkis Alfredo Moisés de Pádua Thiago Faggion Béttega Rodrigo |
| author_sort | e Souza Amarílis Severino |
| collection | DOAJ |
| description | Drying operations in iron ore processing plants have a particularly high energy demand due to the massive solid flow rates employed in this industry. A 33 full-factorial design was applied to investigate the effects of air temperature, airflow velocity, and solids load on the drying time and the specific energy consumption (SEC) of the convective drying of iron ore fines in a fixed bed. The results demonstrated that each drying air condition was associated with an optimal solids load that minimized the SEC. A load of 73 g (bed height of about 0.8 cm) was identified and validated as the optimal condition in terms of energy consumption for the configuration with the highest air temperature (90°C) and airflow velocity (4.5 m/s). This condition resulted in a drying time of 29.0 s and a corresponding SEC of 12.8 MJ/kg to reduce the moisture from 0.11 kg water/kg dry solids to a target of 0.05 kg water/kg dry solids. Identifying the optimum values for the process variables should assist in designing and operating energy-efficient convective dryers for iron ore fines. |
| first_indexed | 2024-03-13T06:24:23Z |
| format | Article |
| id | doaj.art-01dbe6e7b2f84b489403f91ebfd8e6b0 |
| institution | Directory Open Access Journal |
| issn | 1451-9372 2217-7434 |
| language | English |
| last_indexed | 2024-03-13T06:24:23Z |
| publishDate | 2023-01-01 |
| publisher | Association of the Chemical Engineers of Serbia |
| record_format | Article |
| series | Chemical Industry and Chemical Engineering Quarterly |
| spelling | doaj.art-01dbe6e7b2f84b489403f91ebfd8e6b02023-06-09T10:41:59ZengAssociation of the Chemical Engineers of SerbiaChemical Industry and Chemical Engineering Quarterly1451-93722217-74342023-01-0129318920010.2298/CICEQ220208026S1451-93722200026SEnergy analysis of the convective drying of iron ore finese Souza Amarílis Severino0de Souza Pinto Thiago César de1Sarkis Alfredo Moisés2de Pádua Thiago Faggion3Béttega Rodrigo4Federal University of São Carlos, Department of Chemical Engineering, Drying Center of Pastes, Suspensions and Seeds, São Carlos, BrazilMineral Development Center - CDM/Vale, Santa Luzia, BrazilInstituto Tecnológico Vale - ITV, Santa Luzia, BrazilFederal University of São Carlos, Department of Chemical Engineering, Drying Center of Pastes, Suspensions and Seeds, São Carlos, BrazilFederal University of São Carlos, Department of Chemical Engineering, Drying Center of Pastes, Suspensions and Seeds, São Carlos, BrazilDrying operations in iron ore processing plants have a particularly high energy demand due to the massive solid flow rates employed in this industry. A 33 full-factorial design was applied to investigate the effects of air temperature, airflow velocity, and solids load on the drying time and the specific energy consumption (SEC) of the convective drying of iron ore fines in a fixed bed. The results demonstrated that each drying air condition was associated with an optimal solids load that minimized the SEC. A load of 73 g (bed height of about 0.8 cm) was identified and validated as the optimal condition in terms of energy consumption for the configuration with the highest air temperature (90°C) and airflow velocity (4.5 m/s). This condition resulted in a drying time of 29.0 s and a corresponding SEC of 12.8 MJ/kg to reduce the moisture from 0.11 kg water/kg dry solids to a target of 0.05 kg water/kg dry solids. Identifying the optimum values for the process variables should assist in designing and operating energy-efficient convective dryers for iron ore fines.https://doiserbia.nb.rs/img/doi/1451-9372/2023/1451-93722200026S.pdfiron ore agglomeratestransportable moisture limitenergy consumptiondrying efficiencypellet feed |
| spellingShingle | e Souza Amarílis Severino de Souza Pinto Thiago César de Sarkis Alfredo Moisés de Pádua Thiago Faggion Béttega Rodrigo Energy analysis of the convective drying of iron ore fines Chemical Industry and Chemical Engineering Quarterly iron ore agglomerates transportable moisture limit energy consumption drying efficiency pellet feed |
| title | Energy analysis of the convective drying of iron ore fines |
| title_full | Energy analysis of the convective drying of iron ore fines |
| title_fullStr | Energy analysis of the convective drying of iron ore fines |
| title_full_unstemmed | Energy analysis of the convective drying of iron ore fines |
| title_short | Energy analysis of the convective drying of iron ore fines |
| title_sort | energy analysis of the convective drying of iron ore fines |
| topic | iron ore agglomerates transportable moisture limit energy consumption drying efficiency pellet feed |
| url | https://doiserbia.nb.rs/img/doi/1451-9372/2023/1451-93722200026S.pdf |
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