Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOx and Al2O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3 and ranges from 30:70 to 60:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.

Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOx and A12O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3 and ranges from 30:70 to 60:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.

Abstract: A resistor,which is solidified from a melt, is provided for a refractory shaped body, and includes a refractory mineral metal-oxide main component having elasticizers of a general formula A2+B3+2O4 in an amount so that solubility of the main component for the elasticizer is exceeded with the elisticizers providing precipitation areas in the main component. The resistor is produced by a joint melting of the main component with oxides which form the elasticizers. A process is provided for the production of the resistor.

Abstract: A material for refractory shaped bodies or compounds, the material being a pleonaste and/or a spinel of the pleonaste type. In addition to FeOX and Al2O3, the material also includes MgO. The ratio of the iron in the material is calculated as Fe2O3:Al2O3, and ranges from 30:70 to 50:40. The material contains from 20 to 60% by mass of MgO, as based on Fe2O3+Al2O3.

Abstract: A resistor, which is solidified from a melt, is provided for a refractory shaped body, and includes a refractory mineral metal-oxide main component having elasticizers a general formula A2+B3+2O4 in an amount so that solubility of the main component for the elasticizer is exceeded with the elasticizers providing precipitation areas in the main component. The resistor is produced by a joint melting of the main component and the oxides which form the elasticizers. A process is provided for the production of the resistor.

Abstract: The invention relates to a material for refractory shaped bodies or compounds, wherein the material is a pleonaste and/or a spinel of the pleonaste type which, in addition to FeOx and Al2O3, also includes MgO, the ratio of the iron, calculated as Fe2O3:Al2O3 ranging from 30:70 to 60:40, and the material containing from 20 to 60% by mass of MgO, based on Fe2O3+Al2O3.

Abstract: The invention relates to a resistor which is solidified from the melt, in particular for a refractory shaped body, formed at least from a refractory mineral metal-oxide main component, in which elasticizers of the general formula A2+B3+2O4 are present in an amount which is such that the solubility of the main component for the elasticizer is exceeded, and the elasticizers form precipitation areas in the main component, the resistor being produced by joint melting of the main component and the oxides which form the elasticizers, and to a process for its production.

Abstract: Heavy ceramic shaped material with a content of at least one of the components magnesia, fired dolomite, chromite and spinel, characterized by a microcrack system substantially homogeneously distributed in the shaped material structure, as well as process for producing such a heavy ceramic shaped material and the use thereof.

Abstract: A high-temperature and thermal-shock-resistant thermal insulating coating based upon flame- or plasma-sprayed ceramic materials. The coating consists of several layer sequences essentially of the same materials. Each layer sequence contains at least one ceramic and one cermet layer, and/or one ceramic and one metal layer, and/or one cermet and one metal layer.