| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Furnace Tapping 2022
|
| Presentation Title |
Health Friendly Plugging Repair Pastes |
| Author(s) |
Antonio De Pretto, Lars Lindstad |
| On-Site Speaker (Planned) |
Antonio De Pretto |
| Abstract Scope |
A well-functioning taphole is critical for most furnaces and it is important to have a plugging repair paste that contributes to maintain this. Plugging materials mainly containing carbon and oxides have been studied. The best working pastes in this system often contain Coal Tar Pitch high temperature (CTPht) which has been defined as a ’substance of very high concern’ under the European Chemicals Legislation (European Chemicals Agency, 2017)
Taphole pastes that are without CTPht or large amounts of polycyclic aromatic hydrocarbons (PAH), have been developed in this work. An important part has been to develop test and measurement techniques to compare properties of new taphole materials with old well working pastes. Three of these techniques have been; plate viscometry, rapid heat up of samples with or without pressure in simulated tapholes keeping temperatures up to 1200°C. From these, properties of the paste and it’s repairing effect on surrounding materials could be measured. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Environmental Effects, Pyrometallurgy |