MEHRSCHICHTIGER FEUERFESTER VERSCHLEISSKÖRPER

摘要

The body has a wearing layer subjected to thermal, mechanical and metallurgical/chemical attack, and one or more further ceramic ones of different physical characteristics. The layers are shaped together and subjected to continuous carbon-bonding, so as to produce a quasi-monolithic body. The wearing layer can have a lower open porosity than the adjacent one, these being typically below and above 15% by volume respectively, while their basic densities can respectively be 3.0 g/cm-3 minimum and 2.9 g/cm-3 maximum. The adjacent layer can be up to 100% of the weight of the ceramic wearing layer, but of recycled granular material together with the amount of carbon necessary for bonding.