Abstract
Increasing the service life and reducing the expenses for refractories remains an actual task for metallurgical production. One of the ways to solve it is the use of new composite materials in the modern refractories production. In this work, studies were carried out under alloying of ladle periclase carbon shaped products "PUPK-Sh" by composite boron and nitrogen-containing antioxidants obtained by the SHS method.
As a result of laboratory tests it was found that periclase carbon refractories, containing one of composite additives: BortiX (2TiB2∙TiC), Nitro-boral (BN∙Al2O3) and NK-2 (Si3N4∙Si) compared with the same refractories, including a traditional antioxidant additive (aluminum powder), characterized by the better slag resistance, oxidation and physic-mechanical properties after coking firing. Based on the results obtained, the experienced staffs of the products "PUPK-Sh", containing composite SHS antioxidants, were recommended for pilot-industrial tests.
Keywords:
Carbon-oxide refractories, graphite, oxidation, antioxidants, aluminum powder, boron carbide, borides, nitrides, self-propagating high-temperature synthesis (SHS), composite materials, working lining.