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...

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Autores principales:	Francisco José Jiménez-Espadafor Aguilar, José Antonio Vélez Godiño, Miguel Torres García, José María. Gallardo Fuentes, Eduardo Díaz Gutiérrez
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	refining furnace copper infiltration thermal modeling high-temperature heat transfer model fitting Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/9e51ec2c7fdf43efb9758ddfda07ce13
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spelling	oai:doaj.org-article:9e51ec2c7fdf43efb9758ddfda07ce132021-11-25T18:15:25ZThermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion10.3390/ma142269781996-1944https://doaj.org/article/9e51ec2c7fdf43efb9758ddfda07ce132021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6978https://doaj.org/toc/1996-1944Fire 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.Francisco José Jiménez-Espadafor AguilarJosé Antonio Vélez GodiñoMiguel Torres GarcíaJosé María. Gallardo FuentesEduardo Díaz GutiérrezMDPI AGarticlerefining furnacecopper infiltrationthermal modelinghigh-temperature heat transfermodel fittingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6978, p 6978 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	refining furnace copper infiltration thermal modeling high-temperature heat transfer model fitting Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	refining furnace copper infiltration thermal modeling high-temperature heat transfer model fitting Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Francisco José Jiménez-Espadafor Aguilar José Antonio Vélez Godiño Miguel Torres García José María. Gallardo Fuentes Eduardo Díaz Gutiérrez Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion
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	article
author	Francisco José Jiménez-Espadafor Aguilar José Antonio Vélez Godiño Miguel Torres García José María. Gallardo Fuentes Eduardo Díaz Gutiérrez
author_facet	Francisco José Jiménez-Espadafor Aguilar José Antonio Vélez Godiño Miguel Torres García José María. Gallardo Fuentes Eduardo Díaz Gutiérrez
author_sort	Francisco José Jiménez-Espadafor Aguilar
title	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_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_sort	thermal modeling of the port on a refining furnace to prevent copper infiltration and slag accretion
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9e51ec2c7fdf43efb9758ddfda07ce13
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Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion

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