A growing interest in designing high-alumina MgO-bonded refractory castables has been identified recent years due to the magnesia ability react: (i) with water at initial processing stages of these materials (inducing precipitation brucite phase) or (ii) alumina, giving rise situ MgAl2O4 generation high temperatures. Nevertheless, despite great potential caustic be used as a binder such systems...

The recycling options of spent MgO-C refractories from an electrical arc furnace (EAF) have been evaluated. The economic, quality of spent refractories and products made from it, the ease of implementation of a recycling practice and the interest of steel melt shops were considered. It was decided that the best option of most EAF shops would be to recycle spent MgO-C refractory as a foaming sla...

Abstract Herein, magnesium metatitanate (MgTiO 3 ) ceramics were synthesised using recycled magnesia-hercynite (MH) bricks as the raw materials to achieve solid waste reusing of cement kiln refractories. The MH mixed with anatase TiO 2 investigate effect addition doped B O during synthesis MgTiO at 1400 °C. Phase compositions and microstructural studies performed x-ray diffraction (XRD) scannin...

Besides the good performance of electrofused magnesia-chromite aggregate (EMCA) in ceramic refractories, generation toxic Cr+6 after working conditions is driving its urgent replacement. Aiming at optimizing search towards eco-friendly options, this work applied multiple electron-microscope-based techniques to assess key microstructural features. BSE/EDS imaging coupled with thermodynamic calcu...