METHOD FOR PRODUCING CERAMIC REFRACTORY PRODUCT FROM ZIRCONIUM DIOXIDE Russian patent published in 2022 - IPC C04B35/482 C04B35/626 

FIELD: ceramic refractory products.

SUBSTANCE: invention relates to methods for producing ceramic refractory products from zirconium dioxide, in particular to methods that include sintering preforms formed from zirconium dioxide powders. The preferred area of application of the invention is the manufacture of equipment for glass production. According to the proposed method, a target workpiece is made, the method including the steps of obtaining an initial technological block from an initial fine fraction of zirconium dioxide with a particle size of not more than 10 mcm; sintering the original technological block to an apparent density of at least 3.63 g/cm³ and not more than 4.84 g/cm³; crushing the sintered process block and separating the target large fraction of zirconium dioxide with a particle size of over 0.1 mm; obtaining the target mixture containing the target coarse and initial fine fractions of zirconium dioxide. A workpiece is formed from the target mixture and sintered to an apparent density of over 4.84 g/cm³.

EFFECT: increasing the apparent density and reducing the open porosity of the zirconia ceramic refractory product.

10 cl, 8 dwg, 1 tbl, 5 ex