In situ observation of the direct and indirect dissolution of MgO particles in CaO–Al2O3–SiO2-based slags

In situ observation of the dissolution phenomena of SiC particle in CaO–SiO2–MnO slag

“…Details of the CSLM technique have been available elsewhere. [12][13][14][15][16][17] The compositions of the slags used in this study are CaO-SiO 2 -10 wt.% MnO (wt.% CaO/wt.% SiO 2 = C/S = 1.0) and CaO-SiO 2 -20 wt.% MnO (C/S = 0.5). These systems are very important in a production of manganese alloys even though small amounts of Al 2 O 3 and MgO are not included for the sake of simplification.…”

“…CSLM work has been carried out on the dissolution phenomena of MgO, Al 2 O 3 and MgAl 2 O 4 microparticles in the CaO-SiO 2 -Al 2 O 3 (-MgO) slags. [12][13][14][15][16] Consequently, in the present study, the dissolution of SiC particle at 1600 • C in the CaO-SiO 2 -MnO slag is observed in situ by means of CSLM and analyzed in order to make the determination of dissolution 0955-2219/$ -see front matter © 2010 Elsevier Ltd. All rights reserved. doi:10.1016/j.jeurceramsoc.2010.07.020 mechanism, which has not been clarified yet, more straightforward.…”

Kinetics of Flux Dissolution in Oxygen Steelmaking

“…The dissolution can be controlled by chemical reaction, diffusion through the solid intermediate product, diffusion through liquid phase boundary layer or by mixed control. 11,23) The formation of intermediate product retards the dissolution however, it does not stop the dissolution. [1][2][3] The dissolution mechanism of solid lime and dolomite in oxygen steelmaking process is described in the following section.…”

“…There have been several experimental studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] on the mechanism and kinetics of flux dissolution into stirred and stagnant slag baths at high temperatures. However, these are generally limited studies with experimental conditions, such as the stirring intensity, composition and temperature of molten slag system, which can be practically studied at laboratory scale.…”

Initial Wetting and Spreading Phenomena of a CaO–SiO2 Liquid Slag on MgO Substrates

“…The corrosion mechanism of the refractories is investigated by many researchers: the dissolution of the refractory material into the slag and the penetration of the slag into the refractory material. [1][2][3][4][5][6] The dissolution rate of MgO refractory into oxide slags strongly depends on the slag composition and temperature. 7) Both dissolution and penetration are considerably affected by wettability.…”