THE DEVELOPMENT OF NEW SPINEL CONTAINING MgO-C REFRACTORIES FOR APPLICATION IN STEELMAKING LADLES

摘要

The present paper will address the development of new generation of MgO-C refractories containing in-situ (so-called spinel-bonded MgO-C refractories) and non-stichiometric spinels (so-called MgO-spinel-C refractories) for application in steelmaking ladles. Physical and mechanical properties was evaluated after curing and coking at 1000-1600°C and influence of different spinel types on corrosion resistance of above mentioned samples against to different CaO/SiO_2 ratio silicate slags was also evaluated by rotary slag testing at 1650°C and 10hrs. The phase and microstructural analysis of corroded samples were also employed by SEM/EDS technique.