Blue nano tungsten oxide may be applied for producing nano-ceramic color master, which may be widely applied in the heat insulation filed in the future. The properties of blue tungsten oxide, such as large specific surface area, have a greater impact on the reduction process and the quality of final tungsten powder.
At present, there is a large amount of literature and production practice showing that blue tungsten oxide with a large specific surface area is good for the preparation of fine tungsten powder and tungsten carbide powder.
Large specific surface area of blue tungsten oxide means that the reduction process has better kinetic conditions, which facilitates the infiltration of hydrogen and the escape of water vapor during hydrogen reduction. In addition, when preparing doped tungsten wire for a lamp, blue tungsten oxide is required to have a large specific surface area and a large number of cracks to facilitate doping. At the same time, due to the high chemical activity of the high specific surface area of blue tungsten oxide, the reduction rate is large, the speed for pushing the boat can be increased and the feeding amount of the converter can be increased, thereby significantly increasing the production efficiency of tungsten powder.
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