METHOD OF PRODUCTION OF REFRACTORY PRODUCTS OUT OF CHROME OXIDE Russian patent published in 2005 - IPC

FIELD: methods of production of refractory ceramic materials.

SUBSTANCE: the invention is pertaining to ceramic materials technology and may be used for manufacture of chrome-oxide ammunition at production of the glass fiber. The technical result of the invention: production of a structure with an adjustable density distribution along a refractory product cross-section. A formed effective surface of the refractory products made out of chrome oxide subject to action of a reduction medium by its direct contact in the raw with a carbon component. A sintering is conducted in the gas-flame furnaces with an air-fuel ratio of 1.05 - 1.3. At the final temperatures of the sintering carry out isothermal soakings within the limits of obtaining the preset ratio of the layers of the dense and porous structure. The carbonic component is used in the form of granular masses (Kryptol crumbs) or dense bodies of various methods of manufacture.

EFFECT: the invention ensures production of a structure with an adjustable density distribution along a refractory product cross-section.

2 cl, 1 ex