Szczegóły publikacji
Opis bibliograficzny
Wettability and reaction of copper slag with $MgO, Al_2O_3, ZrO_2, MgCr_2O_4, MgAl_2O_4, ZnAl_2O_4$ and $Mg_2SnO_4$ / Ilona JASTRZĘBSKA, Oliwia Pająk, Joanna PRZYSTAŚ, Weronika Łukianiuk, Paweł DROŻDŻ, Somnath Mandal // Journal of the European Ceramic Society ; ISSN 0955-2219. — Tytuł poprz.: International Journal of High Technology Ceramics. — 2026 — vol. 46 iss. 3 art. no. 117807, s. 1–15. — Bibliogr. s. 14–15, Abstr. — Publikacja dostępna online od: 2025-09-10
Autorzy (6)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 163454 |
|---|---|
| Data dodania do BaDAP | 2025-10-16 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jeurceramsoc.2025.117807 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of the European Ceramic Society |
Abstract
Using a copper slag containing 63.1 wt% Fe2O3, 23.0 % SiO2 and 1.9–3.5 % each of PbO, CuO, Al2O3, CaO and MgO, corrosion resistance of > 97.2 % pure refractory aggregates sintered to 0.4–4.7 % apparent porosity were evaluated by hot stage microscope. At a fixed temperature of 1425°C, MgCr2O4 displayed the greatest wetting angle (62°) and MgO had the largest relative height for the slag (91 % of starting 3 mm cube) demonstrating their superior corrosion resistance. MgO-MgCr2O4 bricks are the prevalent refractory used in copper converters despite studies that warn that spent materials may contain carcinogenic hexavalent chromium that pose health hazards. MgO was found to be superior to Al2O3 as base composition because of higher temperature of attainment of 90 % relative height of the slag (1425°C and 1412°C, respectively) and 30° contact angle (>1455°C and 1419°C). ZrO2 and Mg2TiO4 had the lowest temperatures for 90 % slag height (1405°C and 1396°C) and 30° contact angle (1402°C and 1406°C), revealing their poor corrosion resistance. Mg2SnO4 formed a thick reaction layer of SnO2, Mg2SiO4 and Fe3O4 containing 5–5.1 at% each of Mg and Sn indicating severe corrosion. MgAl2O4 and ZnAl2O4 had 90 % slag height temperatures of 1417°C and 1413°C, and 30° contact angle temperatures of 1426°C and 1420°C. The most corrosion resistant chromium-free refractory for copper converter is expected to be MgO-MgAl2O4 brick as both the phases exhibited delayed softening and spreading of slag. Upon reaction with MgAl2O4, low-melting fayalite-rich olivine in the starting slag was eliminated, magnetite solid solution remained along with a glass phase containing dissolved Al2O3, whereas MgO aggregate had Mg-rich glass and additional small amounts of high melting point compounds, Mg2SiO4 and MgO-FeO solid solution at the reaction interface.
