Szczegóły publikacji
Opis bibliograficzny
ZnO and $Fe_{2}O_{3}$ doped $Al_{2}O_{3}$-rich $MgAl_{2}O_{4}$ as Cr-free refractory matrix for copper industry: sintering, phase evolution and slag corrosion / Ilona JASTRZĘBSKA, Joanna PRZYSTAŚ, Oliwia Pająk, Marie-Aline Van Ende, In-Ho Jung, Somnath Mandal // Journal of the European Ceramic Society ; ISSN 0955-2219. — Tytuł poprz.: International Journal of High Technology Ceramics. — 2025 — vol. 45 iss. 5 art. no. 117070, s. 1–15. — Bibliogr. s. 14–15, Abstr. — Publikacja dostępna online od: 2024-11-13
Autorzy (6)
- AGHJastrzębska Ilona
- AGHPrzystaś Joanna
- AGHPająk Oliwia
- van Ende Marie Aline
- Jung In Ho
- Mandal Somnath
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 157216 |
|---|---|
| Data dodania do BaDAP | 2025-01-08 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jeurceramsoc.2024.117070 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of the European Ceramic Society |
Abstract
The new zero-chrome multicomponent (Mg,Zn)[Al,Fe]2O4 spinels were synthesized in this study, which are potential candidates for refractory matrix and aggregate to substitute toxic magnesia-chrome and aluminachrome refractories used in the copper industry. 0.2-1.0 % open porosity materials were obtained by sintering the mixtures of commercial Al2O3-rich AR78 spinel and ZnO+Fe2O3 additive at 1650 degrees C for 4 h. Pressed pellet dilatometry revealed that increasing ZnO+Fe2O3 addition reduced spinel formation expansion and reaction temperature as well as accelerated sintering of materials. Contact corrosion tests of new refractory materials against copper fayalite slag with a Fe/SiO2 ratio of 1.9 at 1400 degrees C for 1 h revealed the formation of a protective layer composed of Fe3O4-MgAl2O4 solid solution at the slag-refractory interface which arrested further penetration of aggressive slag into the refractory. The thickness of the protective layer was found to be directly proportional to the amount of additive. The similarity in the crystal structure and composition of the protective layer and the underlying pristine refractory might increase its stability against thermal cycling.
