Thermal vacuum method of Zirconium Dioxide production :: SPE RESST

Thermal vacuum method of Zirconium Dioxide production

Thermal vacuum method of Zirconium Dioxide production is developed according to the agreement with the State Scientific-Production Enterprise (SSPE) "Zirkonij".

Technological process of rapid continuous thermal drying (Fig.1-4).

rapid moisture removal leads to the material granulation: from ~1 mm to
~10 µm;

decrease of specific energy consumption by a factor of 2,5…3;

unnecessary technological operation of dried product grinding is excluded.

Fig. 1 - Zirconium Dioxide, moisture of 85%

Fig. 2 - Zirconium Dioxide. Initial drying stage (×100).

Fig. 3 - Powder (Ø10÷15 µm) of Zirconium Dioxide after drying (×5000).

Fig. 4 - Zirconium Dioxide, moisture of 1,1%

№	Initial moisture, %	Heating temperature, °C	Drying time, s	Moisture after drying, %
1	85	320	32	3,2
2	85	320	16	1,1