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Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion
Fire refining of blister copper is a singular process at very high temperatures (~1400 K), which means the furnace is exposed to heavy thermal loads. The charge is directly heated by an internal burner. The impurities in the charge oxidize with the flux of hot gases, creating a slag layer on the top...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620874/ https://www.ncbi.nlm.nih.gov/pubmed/34832379 http://dx.doi.org/10.3390/ma14226978 |
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author | Aguilar, Francisco José Jiménez-Espadafor Vélez Godiño, José Antonio Torres García, Miguel Gallardo Fuentes, José María. Díaz Gutiérrez, Eduardo |
author_facet | Aguilar, Francisco José Jiménez-Espadafor Vélez Godiño, José Antonio Torres García, Miguel Gallardo Fuentes, José María. Díaz Gutiérrez, Eduardo |
author_sort | Aguilar, Francisco José Jiménez-Espadafor |
collection | PubMed |
description | Fire refining of blister copper is a singular process at very high temperatures (~1400 K), which means the furnace is exposed to heavy thermal loads. The charge is directly heated by an internal burner. The impurities in the charge oxidize with the flux of hot gases, creating a slag layer on the top of the molten bath. This slag is periodically removed, which implies liquid metal flowing through the furnace port. To address its malfunction, a re-design of the furnace port is presented in this work. Due to the lack of previous technical information, the convective heat transfer coefficient between the slag and the furnace port was characterized through a combination of an experimental test and a three-dimensional transient model. Finally, the original design of the furnace port was analyzed and modifications were proposed, resulting in a reduction of the average temperature of the critical areas up to 300 K. This improvement prevents the anchoring of the accretion layer over the port plates and the steel plate from being attacked by the copper. |
format | Online Article Text |
id | pubmed-8620874 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86208742021-11-27 Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion Aguilar, Francisco José Jiménez-Espadafor Vélez Godiño, José Antonio Torres García, Miguel Gallardo Fuentes, José María. Díaz Gutiérrez, Eduardo Materials (Basel) Article Fire refining of blister copper is a singular process at very high temperatures (~1400 K), which means the furnace is exposed to heavy thermal loads. The charge is directly heated by an internal burner. The impurities in the charge oxidize with the flux of hot gases, creating a slag layer on the top of the molten bath. This slag is periodically removed, which implies liquid metal flowing through the furnace port. To address its malfunction, a re-design of the furnace port is presented in this work. Due to the lack of previous technical information, the convective heat transfer coefficient between the slag and the furnace port was characterized through a combination of an experimental test and a three-dimensional transient model. Finally, the original design of the furnace port was analyzed and modifications were proposed, resulting in a reduction of the average temperature of the critical areas up to 300 K. This improvement prevents the anchoring of the accretion layer over the port plates and the steel plate from being attacked by the copper. MDPI 2021-11-18 /pmc/articles/PMC8620874/ /pubmed/34832379 http://dx.doi.org/10.3390/ma14226978 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Aguilar, Francisco José Jiménez-Espadafor Vélez Godiño, José Antonio Torres García, Miguel Gallardo Fuentes, José María. Díaz Gutiérrez, Eduardo Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title | Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title_full | Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title_fullStr | Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title_full_unstemmed | Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title_short | Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion |
title_sort | thermal modeling of the port on a refining furnace to prevent copper infiltration and slag accretion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8620874/ https://www.ncbi.nlm.nih.gov/pubmed/34832379 http://dx.doi.org/10.3390/ma14226978 |
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