
Nanometer blue tungsten oxide, which may be applied for producing thermal insulation paper, can be prepared by self-reduction of ammonium paratungstate (APT). And so other grain size of blue tungsten oxide powder is. For example, the process parameters of micron particle size blue tungsten oxide are as follows, the temperature is in the range of 600~800°C, the rotary furnace speed is 0.3~2r/min, and the feeding speed is 150~300kg/h. The test results of the relevant performance of the obtained blue tungsten…