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Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View

The recovery of the grain matrix from spent moulding sand is a constant challenge in making the best possible use of the deposits of quartz sand material, as well as in protecting them. In the case of spent sand with organic binders, the best method to recover the grain matrix is thermal regeneratio...

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Autores principales: Łucarz, Mariusz, Dereń, Michał
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10672303/
https://www.ncbi.nlm.nih.gov/pubmed/38005032
http://dx.doi.org/10.3390/ma16227102
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author Łucarz, Mariusz
Dereń, Michał
author_facet Łucarz, Mariusz
Dereń, Michał
author_sort Łucarz, Mariusz
collection PubMed
description The recovery of the grain matrix from spent moulding sand is a constant challenge in making the best possible use of the deposits of quartz sand material, as well as in protecting them. In the case of spent sand with organic binders, the best method to recover the grain matrix is thermal regeneration. However, this method is expensive and requires adequate attention to the emission of harmful compounds into the atmosphere. This paper presents a new concept for implementing the thermal regeneration process. A suitable regeneration temperature was adopted for the furfuryl binder moulding sand, and a change in the design of the device was introduced in the area of the utilisation of gases generated during the combustion of the spent binder. To confirm the assumptions made, and to assess the appropriate suitability of the material recovered, the technological parameters of the material obtained were verified, namely, ignition losses, sieve analysis, bending strength, and pH value. The consumption of media for the process was also analysed from an economic point of view, as well as the emission of BTEX (a mixture of volatile aromatic hydrocarbons-benzene, toluene and three isomers of xylene) gases under different conditions of the process. On the basis of the research conducted, it was concluded that lowering the regeneration temperature of regeneration does not adversely affect the technological parameters of the moulding sand on the regenerate matrix. Changing the design of the regenerator does not result in increased emissions of harmful substances to the environment. Studies indicate that the appropriate setting of thermal regeneration parameters and the optimal design of the employed equipment are favourable factors in reducing the cost of the process while not compromising the quality of the moulding sand and the environmental impact.
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spelling pubmed-106723032023-11-09 Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View Łucarz, Mariusz Dereń, Michał Materials (Basel) Article The recovery of the grain matrix from spent moulding sand is a constant challenge in making the best possible use of the deposits of quartz sand material, as well as in protecting them. In the case of spent sand with organic binders, the best method to recover the grain matrix is thermal regeneration. However, this method is expensive and requires adequate attention to the emission of harmful compounds into the atmosphere. This paper presents a new concept for implementing the thermal regeneration process. A suitable regeneration temperature was adopted for the furfuryl binder moulding sand, and a change in the design of the device was introduced in the area of the utilisation of gases generated during the combustion of the spent binder. To confirm the assumptions made, and to assess the appropriate suitability of the material recovered, the technological parameters of the material obtained were verified, namely, ignition losses, sieve analysis, bending strength, and pH value. The consumption of media for the process was also analysed from an economic point of view, as well as the emission of BTEX (a mixture of volatile aromatic hydrocarbons-benzene, toluene and three isomers of xylene) gases under different conditions of the process. On the basis of the research conducted, it was concluded that lowering the regeneration temperature of regeneration does not adversely affect the technological parameters of the moulding sand on the regenerate matrix. Changing the design of the regenerator does not result in increased emissions of harmful substances to the environment. Studies indicate that the appropriate setting of thermal regeneration parameters and the optimal design of the employed equipment are favourable factors in reducing the cost of the process while not compromising the quality of the moulding sand and the environmental impact. MDPI 2023-11-09 /pmc/articles/PMC10672303/ /pubmed/38005032 http://dx.doi.org/10.3390/ma16227102 Text en © 2023 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
Łucarz, Mariusz
Dereń, Michał
Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title_full Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title_fullStr Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title_full_unstemmed Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title_short Thermal Regeneration of Spent Sand with Furfuryl Binder from an Ecological and Economic Point of View
title_sort thermal regeneration of spent sand with furfuryl binder from an ecological and economic point of view
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10672303/
https://www.ncbi.nlm.nih.gov/pubmed/38005032
http://dx.doi.org/10.3390/ma16227102
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