Basic refractory ceramic hollow body for metallurgical applications especially as an immersion pouring nozzle etc.

摘要

A basic refractory ceramic hollow body, made from a single magnesium oxide and carbon based material and having a specified open porosity with a constant pore size distribution, is new. A basic refractory ceramic hollow body, for metallurgical applications, consists of a monolithic body made of a single material based on a batch of 10-40 wt. % carbon, 50-89 wt. % MgO and 1-35 wt. % other components and has an open porosity of 5-20 vol. % with a constant content of pores in the 0.1-15 microns range. Preferred Features: The MgO may be partially or completely replaced by dolomite.