The three-days seminar consists of two major parts: In the first part of 1.5 days, the basic science of refractories is being explained by professionals from research and education. During the second part, experts from industries that rely on refractories (like iron- and steelmaking, cement, glass, foundries, incineration…) explain the use and damage mechanisms of refractories in their very industries. Thus the seminar is intended to give a broad overview on the science and the applications of refractories. It addresses engineers and technicians who come into contact with refractories for the first time, as well as commercial employees who work at refractory producers, Language of this year´s seminar is German, 2021 it will be in English language.