Blue nano tungsten oxide for nano-ceramic dispersion solution has high specific surface area so that it has good chemical activity and fast hydrogen reduction speed. And thus, the production efficiency of tungsten powder can be effectively improved. In other words, it is more conducive to the preparation of ultrafine tungsten powder and tungsten carbide powder, etc. And therefore, researchers began to study the preparation system and method of high specific surface area blue tungsten oxide. They found a preparation system and method:
1.0 Preparation system with multiple temperature zone control zones.
2.0 The specific preparation steps are as follows:
2.0.1 Feed the ammonium tungsten compound raw material (ammonium paratungstate/APT) from the raw material silo into the calcining furnace through a screw feeder;
2.0.2 Calcination of raw materials in a vacuum oven;
2.0.3 The calcined material is cooled and sieved to obtain blue tungsten oxide powder with high specific surface area, which is higher than 10m2/g.
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