Steelmaking processes require high-performance lining materials with high refractoriness and thermal shock resistance, such as MgO–C bricks. Therefore, the interactions between three industrially fabricated bricks differing in used MgO grade liquid steel are investigated by immersion tests an Al-deoxidized 42CrMo4 at 1600 °C, herein. The trials carried out a casting simulator. Macro- microstruc...

The corrosion behavior of three sorts of refractories based on alumina-graphite were studied by immersion tests. The melts included smelting reduction molten slag and corresponding carbon saturated molten iron. The influence of test temperature, FeO content in slag and specimen rotative velocity on the corrosion rate of refractories was examined. By means of SEM and EDS, the microstructure chan...

Magnesium oxide (MgO)-based refractories are commonly used in quicklime and cement rotary kilns. At the high temperatures kiln burn zone, infiltration of molten fuel ash into refractory can occur. Subsequent chemical interactions cause wear that inflicts maintenance costs loss production. To improve reliability, it is necessary to increase understanding between slag liner materials. Three comme...

Abstract We performed a laboratory investigation at 1,873 K using MoSi 2 furnace to study the effect of refractories on inclusions in 55SiCr suspension spring steel. Three types crucible materials (Al O 3 , MgO·Al and MgO–CaO) were investigated. The results this indicated that SiO Al not suitable for making By contrast, MgO–CaO was perfect choice producing advantages crucibles smelt steel summa...

  Three different materials (aluminum, ferro -silicon and silicon) were used as antioxidants in order to prevent the decarburization process and to keep and/or increase the final properties in MgO-C refractories. Their effects were compared by measuring the physical and mechanical properties as well as oxidation and the resultant phases and microstructures, in the temperature range of 200-1600 ...

Magnesium oxide suitable for the use in basic refractories was prepared from dolomite (CaMg(CO3)2) by hydrochloric acid leaching, precipitation with CO2 and thermal hydrolysis. Leaching of the dolomite ore in aqueous hydrochloric acid solution was investigated with respect to the effects of time on dissolution of the dolomite sample. The dependence of the observed dissolution rate on pH was est...