METHOD OF OBTAINING ZIRCON DIOXIDE Russian patent published in 2015 - IPC C01G25/02 

FIELD: chemistry.

SUBSTANCE: method includes pyrohydrolysis in gas phase of fluorine containing zirconium salts in presence of water steam. As zirconium salt applied is zirconium tetrafluoride. Pyrohydrolysis is realised by heating of reactor to 900-950°C, with water steam temperature being from 700 to 1200°C, preferably 900-1000°C. Water steam is obtained by burning hydrogen in oxygen in burner, with dosed introduction of additional quantity of water steam, obtained by its evaporation at boiling temperature, into their volume.

EFFECT: invention makes it possible to obtain high-quality zirconium dioxide powder.

2 cl, 1 dwg, 1 ex