Wetting, cladding and corrosion properties of alkaline slag on dense corundum refractories

Application of Liquidus Projections in SiO2–Al2O3–CaO Systems with Fe2O3 and V2O5 to Study the Dissolution of Alumina Crucibles in Gasification Slags Containing Vanadium

“…In a study with nickel laterite smelting slag with significant amounts of dissolved refractory materials like Al 2 O 3 and Cr 2 O 3 , pseudoternary phase diagrams were used to determine liquidus temperatures. 35 Cheng et al 36 prepared a liquidus projection to study the interaction of an alkaline slag, formed in the paper-making industry with a corundum refractory. High melting points and high-strength phases, such as mullite, nepheline, and feldspar, were predicted in the phase diagram.…”

Effect of MgO on wetting and corrosion behaviour of corundum substrate by CaO–SiO 2 –MgO (–Al 2 O 3 ) slags

“…It is generally believed that the corrosion between molten slag and refractory mainly includes direct and indirect dissolution of refractory in molten slag and penetration of molten slag into refractory [1][2][3][4][5][6][7]. The corrosion is closely related to wetting phenomena [8,9]. The wetting and corrosion between refractory and molten slags during smelting process is therefore an important issue in view of the costs of the refractories and contamination of the smelting product, which must be considered in the composition design for specific industrial vessel or equipment.…”

“…Alumina can be used as composite refractory or single refractory, which is widely serviced as refractory containers such as hot metal torpedo car or steel ladle in iron and steel making, refractory components such as tundish stopper and submerged entry nozzle (SEN) in continuous casting, and also as smelting furnace linings of aluminium and copper in nonferrous metallurgy. Many researches have been carried on the corrosion of alumina refractory by Al 2 O 3 contained molten slags [1][2][3][4][5]7,8,[10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The wettability between solid and liquid phases is usually characterized by contact angle, so the contact angle between alumina refractory and molten slag has also been studied [8,[24][25][26][27][28][29].…”

“…Many researches have been carried on the corrosion of alumina refractory by Al 2 O 3 contained molten slags [1][2][3][4][5]7,8,[10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The wettability between solid and liquid phases is usually characterized by contact angle, so the contact angle between alumina refractory and molten slag has also been studied [8,[24][25][26][27][28][29]. In the past, most corrosion experiments were performed in the dipping, immersion, finger or crucible test, which could not link the refractory corrosion with the change of contact angle in one experiment.…”