Dissolution of refractories for gasification process of petroleum coke for the steel industry

► MgAl2O4 and Al2O3 refractories were designed for petroleum coke gasification process in steel industry. ► Refractories were exposed to petroleum coke ashes and exhibited dissolution due to molten slag penetration. ► Microstructural analysis revealed formation of spinel's type (Ni2+, Fe2+ and Mg2+)IV (Al3+, Fe3+)VI2O4. ► Hibonite and gehlenite phases were also observed. ► These phases together help to stop the molten slag penetration.