Carbon-bonded refractory molded bodies or masses, comprises a mixture of an oxide, a non-oxide and/or carbon-containing refractory grains, a binder phase, at least one antioxidant, and a combination of at least two nanoscale powders

摘要

Carbon-bonded refractory molded bodies or masses, comprises a mixture of an oxide, a non-oxide and/or carbon-containing refractory grains, a binder phase obtained from carbonization of a liquid binder, based on synthetic resin, bitumen, synthetic pitch and/or pitch, at least one antioxidant, and a combination of at least two nanoscale powders, which exhibit an average diameter of less than 50 nm, an average grain size of less than 50 nm, or an average platelet thickness of less than 50 nm, in an amount of less than 1wt.%, based on the molded body and the mass. An independent claim is also included for producing the carbon bonded refractory molded bodies or masses, comprising mixing the oxide, non-oxide and/or carbon-containing refractory grains with the liquid binder and at least one anti-oxidant in a feed mixture, and mixing the feed mixture with the combination of at least two nanoscale powders, and carbonizing the binder at greater than 800[deg] C.