Abstract
This paper presents a methodology for the obtaining of an abrasive ceramic as the main product and an iron alloy as a byproduct, using industrial solid residuals as raw materials and aluminothermic processing. By using rolling mill scales and aluminum chips, high-hardness ceramics are obtained, using the ceramic itself as a diluent. The processing results are first evaluated using a mass balance, determining that the ceramic should be formed by 58 % FeAl2O4 and 42 % Al2O3, while quantitative characterization by XRD allows to establish that the ceramic phase is mainly composed of hercynite (62 %), corundum (22 %) and small amounts of non-stoichiometric crystalline (≈4 %) and vitreous (≈11 %) phases, feasible to be used in the manufacture of abrasive wheels for polishing floors and terraces.
| Translated title of the contribution | Síntesis aluminotérmica de cerámicas, del sistema hercinita-alúmina, a partir de cascarillas de laminación y virutas de aluminio |
|---|---|
| Original language | English |
| Pages (from-to) | 106-113 |
| Number of pages | 8 |
| Journal | DYNA (Colombia) |
| Volume | 90 |
| Issue number | 229 |
| DOIs | |
| Publication status | Published - 1 Oct 2023 |
| Externally published | Yes |
Keywords
- aluminothermic
- hercynite
- mill scale