التفاصيل البيبلوغرافية
| العنوان: |
Study of the Thermal Behavior of Organic Binders Used in Oxide-Carbon Refractory Bricks. |
| المؤلفون: |
Pássera, Constanza L., Manfredi, Liliana B., Tomba Martínez, Analía G. |
| المصدر: |
Metallurgical & Materials Transactions. Part B; Jun2021, Vol. 52 Issue 3, p1681-1694, 14p |
| مصطلحات موضوعية: |
BRICKS, PHENOLIC resins, FIREBRICK, LOW temperatures, RAMAN spectroscopy, BRICK industry |
| مستخلص: |
Organic substances are used in refractory bricks manufacture as binders. In this work, two commercial binder systems currently employed in MgO-C bricks for steelmaking industry were first analyzed separately from the other components of the refractory. A resol phenolic resin alone and mixed with an ecobinder produced by treatment of tar pitch were studied by several techniques (XRD, FTIR, Raman spectroscopy, DTA/TGA and measurements of density, porosity, and mechanical and oxidation resistances) in their as-received condition, as well as after thermal treatments in conditions near to those used in the manufacture of the bricks (temperatures lower than 300 °C) and also during their service (in the range 600 °C to 1400 °C). The comparative analysis of the obtained results indicates that the ecobinder has domains of ordered carbon in its original condition, although the resin forms a stronger three-dimensional structure after treatments at low temperature (< 300 °C). When both binders are mixed and temperature rises from 600 °C onwards, experimental data show that they evolve with no or little interaction; the produced carbon has more and larger crystalline regions when the ecobinder is present. Finally, the effect of the binders' characteristics on some properties of MgO-C bricks which have them incorporated were briefly analyzed. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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