Method for manufacturing highly-crystallized oxide powder

Details Method for manufacturing highly-crystallized oxide powder Method for manufacturing highly-crystallized oxide powder

C - Chemistry, Metallurgy

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C01B 25/12 (2006.01) C01B 13/14 (2006.01) C01B 13/18 (2006.01) C01B 13/32 (2006.01) C01F 17/00 (2006.01) C01G 1/02 (2006.01) C01G 9/03 (2006.01) C01G 23/00 (2006.01) C01G 23/053 (2006.01) C01G 23/08 (2006.01) C01G 49/00 (2006.01) C01G 51/04 (2006.01) C09K 11/08 (2006.01) C09K 11/77 (2006.01) C30B 11/00 (2006.01) C30B 29/16 (2006.01)

Patent

CA 2436391

A method for manufacturing a highly-crystallized oxide powder, wherein an oxide powder is produced by ejecting a starting material powder comprising at least one metal element and/or semimetal element, which will become a constituent component of the oxide, into a reaction vessel together with a carrier gas through a nozzle; and heating the starting material powder at a temperature higher than the decomposition temperature or reaction temperature thereof and not lower than (Tm/2)°C, where Tm°C stands for a melting point of the oxide, in a state in which the starting material powder is dispersed in a gas phase at a concentration of not higher than 10 g/L. In the above method, the starting material powder may be mixed and dispersed in the carrier gas by using a dispersing machine prior to being ejected into the reaction vessel through a nozzle. The resultant oxide powder has a high crystallinity, a high dispersibility, and a uniform particle size, without introducing impurities thereinto, by a low-cost and simple production equipment.

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