HIGH-TEMPERATURE RHEOMETRY OF BLAST FURNACE SYNTHETIC SLAGS DOPED WITH TiO2 AND TiN
DOI:
https://doi.org/10.7494/mafe.2015.41.1.17Keywords:
slag viscosity, high-temperature rheometry, titanium nitride, rheologyAbstract
Streszczenie
W pracy zaprezentowano wyniki badań przeprowadzone przy użyciu reometrii wysokotemperaturowej, w oparciu o metodę Searle’a. Przeprowadzono analizę reologiczną ciekłych systemów CaO-SiO2-Al2O3-MgO-TiO2 slags domieszkowanych TiN,w zakresie 0,1 -0,7 ułamka objętościowego TiN. Badania przeprowadzono w temperaturze 1310-1500oC, która jest chatakterystyczna dla strefy wysokich temperatur występującej w wielkim piecu. Głównym celem prowadzonych badań była analiza możliwości pomiarów lepkości dla układów heterogenicznych (nietypowych dla zastosowań przemysłowych), a nie zdefiniowanie parametrów reologicznych całkowicie ciekłych systemów żużlowych – które wykazują podobieństwo do cieczy idealnej Newtona.
Słowa kluczowe: lepkość żużla, reometria wysokotemperaturowa, azotek tytanu, reologia
Abstract
The development of the methodology of rotational measurements with a high temperature rheometer using Searle’s method have been conducted. The rheological analysis of liquid systems - CaO-SiO2-Al2O3-MgO-TiO2 slags, and solid particles of titanium nitride –TiN are presented, within a range of 0.1-0.7 of volume fraction of TiN. The measurements were conducted at a range between 1310-1500oC, which is typical for high temperature zones in the blast furnace. The main objective of the study was to analyse the possibilities for viscosity measurements in heterogenic systems (not standard within industrial practice), rather than to determine the rheological character of those systems totally liquid blast furnace slags are similar to ideally viscous Newtonian bodies.
Key words: slag viscosity, high-temperature rheometry, titanium nitride, rheology
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References
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