Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays
The use of alternative low polycyclic aromatic hydrocarbon (PAH) binders in taphole clays is essential due to health and environmental concerns associated with PAHs. Binders that could potentially substitute for highly-temperature coal tar pitch (CTPht) or coal tar (CTht) in taphole clays were inves...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
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| Series: | Open Ceramics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539523001426 |
| _version_ | 1797390402311946240 |
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| author | I.J.-P. Cameron S. Ramjee A.M. Garbers-Craig |
| author_facet | I.J.-P. Cameron S. Ramjee A.M. Garbers-Craig |
| author_sort | I.J.-P. Cameron |
| collection | DOAJ |
| description | The use of alternative low polycyclic aromatic hydrocarbon (PAH) binders in taphole clays is essential due to health and environmental concerns associated with PAHs. Binders that could potentially substitute for highly-temperature coal tar pitch (CTPht) or coal tar (CTht) in taphole clays were investigated. These include coal tar pitch blend, low PAH coal tar pitch, petroleum-based binders and wood-based tars from various sources. The binders were characterized according to chemical composition, with an emphasis on the identification of 16-EPA-PAH (well-known carcinogens), as well as rheology and volatilization behaviour. The alternative binders were ranked according to the analytical results, with the coal tar reference binder, CTht, serving as the benchmark. Beechwood tar (Tar-BW) and crude waxy oil (CWO) showed the most favourable results for replacing CTht in taphole clay. Both have higher viscosities than CTht, lower BE-values (indicating lower toxicity), and higher degrees of mass loss over a wider temperature range. |
| first_indexed | 2024-03-08T23:10:11Z |
| format | Article |
| id | doaj.art-26b6985965654ea4afac0013bc651447 |
| institution | Directory Open Access Journal |
| issn | 2666-5395 |
| language | English |
| last_indexed | 2024-03-08T23:10:11Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj.art-26b6985965654ea4afac0013bc6514472023-12-15T07:26:17ZengElsevierOpen Ceramics2666-53952023-12-0116100470Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole claysI.J.-P. Cameron0S. Ramjee1A.M. Garbers-Craig2Centre for Pyrometallurgy, Department of Materials Science and Metallurgical Engineering, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South AfricaCentre for Pyrometallurgy, Department of Materials Science and Metallurgical Engineering, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South AfricaCorresponding author.; Centre for Pyrometallurgy, Department of Materials Science and Metallurgical Engineering, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South AfricaThe use of alternative low polycyclic aromatic hydrocarbon (PAH) binders in taphole clays is essential due to health and environmental concerns associated with PAHs. Binders that could potentially substitute for highly-temperature coal tar pitch (CTPht) or coal tar (CTht) in taphole clays were investigated. These include coal tar pitch blend, low PAH coal tar pitch, petroleum-based binders and wood-based tars from various sources. The binders were characterized according to chemical composition, with an emphasis on the identification of 16-EPA-PAH (well-known carcinogens), as well as rheology and volatilization behaviour. The alternative binders were ranked according to the analytical results, with the coal tar reference binder, CTht, serving as the benchmark. Beechwood tar (Tar-BW) and crude waxy oil (CWO) showed the most favourable results for replacing CTht in taphole clay. Both have higher viscosities than CTht, lower BE-values (indicating lower toxicity), and higher degrees of mass loss over a wider temperature range.http://www.sciencedirect.com/science/article/pii/S2666539523001426Taphole clayBindersPAHToxicity |
| spellingShingle | I.J.-P. Cameron S. Ramjee A.M. Garbers-Craig Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays Open Ceramics Taphole clay Binders PAH Toxicity |
| title | Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays |
| title_full | Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays |
| title_fullStr | Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays |
| title_full_unstemmed | Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays |
| title_short | Comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon (PAH) alternative binders for use in taphole clays |
| title_sort | comparative study between coal tar pitch and lower polycyclic aromatic hydrocarbon pah alternative binders for use in taphole clays |
| topic | Taphole clay Binders PAH Toxicity |
| url | http://www.sciencedirect.com/science/article/pii/S2666539523001426 |
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