Abstract
The influence of the CaO/SiO2 ratio on flux viscosity at 1300°C, break temperature and crystallization was investigated.
The thermo-chemical software FactSage was used for the calculation of the viscosity, the equilibrium phase content and the liquidus temperature. Based on these results, two sample series with 8.8 wt% TiO2, 5 wt% B2O3 and CaO/SiO2 ratios from 0.8-1.2 were manufactured. Series M1 contained Li2O which was replaced by a higher content of Na2O for F-free mixtures in series M2. The viscosity and break temperature were determined through rotational viscometry, the crystallization temperature and crystalline fraction by a so called Furnace Crystallization Test, a macro style differential thermal analysis which enables a mineralogical investigation of the samples afterwards.
The experiments exhibited that the break temperature, the liquidus temperature and the crystalline fraction rose with increasing C/S ratio while the viscosity decreased for both sequences.
The thermo-chemical software FactSage was used for the calculation of the viscosity, the equilibrium phase content and the liquidus temperature. Based on these results, two sample series with 8.8 wt% TiO2, 5 wt% B2O3 and CaO/SiO2 ratios from 0.8-1.2 were manufactured. Series M1 contained Li2O which was replaced by a higher content of Na2O for F-free mixtures in series M2. The viscosity and break temperature were determined through rotational viscometry, the crystallization temperature and crystalline fraction by a so called Furnace Crystallization Test, a macro style differential thermal analysis which enables a mineralogical investigation of the samples afterwards.
The experiments exhibited that the break temperature, the liquidus temperature and the crystalline fraction rose with increasing C/S ratio while the viscosity decreased for both sequences.
Originalsprache | Englisch |
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Titel | Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts |
Redakteure/-innen | Ramana G Reddy, Pinakin Chaubal, P.Chris Pistorius, Uday Pal |
Erscheinungsort | Seattle Washington USA |
Seiten | 299 |
Seitenumfang | 306 |
ISBN (elektronisch) | 978-1-119-30876-8 |
DOIs | |
Publikationsstatus | Veröffentlicht - 22 Mai 2016 |
Veranstaltung | The 10th international conference on molten slags, fluxes and salts - Seattle, USA / Vereinigte Staaten Dauer: 22 Mai 2016 → 25 Mai 2016 |
Konferenz
Konferenz | The 10th international conference on molten slags, fluxes and salts |
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Kurztitel | MOLTEN 2016 |
Land/Gebiet | USA / Vereinigte Staaten |
Ort | Seattle |
Zeitraum | 22/05/16 → 25/05/16 |
Schlagwörter
- fluorine free
- mold powder
- crystallization