BAKED AND ALLOYED PRODUCED BASED ON ZIRCON + NbO OR TaO Russian patent published in 2012 - IPC C04B35/48 

FIELD: construction.

SUBSTANCE: baked product with average chemical composition in oxides expressed in weight percents: 60%<ZrO₂+HfO₂<75%; 27%<SiO₂<34%; 0<TiO₂<1.5; 0<Y₂O₃<3.5%; 0.1%<Nb₂O₅+Ta₂O₅<5%; and other oxides: <1%, in tote 100%, is produced from initial charge containing more than 75 wt % of zircon. Raw materials are mixed in the form of an initial charge, a block is formed, at least one of dimensions of which is more than 100 mm, and is baked to sintering.

EFFECT: improved resistance to creepage of a heat resistant product on the basis of zircon and its increased density.

32 cl, 2 tbl