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Nano blue tungsten oxide for transparent thermal insulation window film can be used as a raw material for hydrogen reduction to prepare tungsten powder. And some scholars have studied the relationship between the reduction time and the particle size of tungsten powder. It is found that the particle size of the powder increases with the increasing of reduction time under the conditions: the ratio of H2/WO3-x is 4.0 and the reduction temperature is 800°C and 900°C, respectively. When the ratio…

Blue tungsten oxide powder, which may be used for producing transparent thermal insulation window film, can be hydrogen reduced to prepare tungsten powder by two reduction methods. They are static reduction method and dynamic reduction method, respectively. Thus, the hydrogen reduction of blue tungsten oxide powder to produce tungsten powder has two kinds of reduction furnaces, namely static reduction propulsion reduction furnace and dynamic reduction rotary reduction furnace. According to the data, under the condition of ensuring sufficient reduction, compared…

Blue tungsten oxide powder for transparent thermal insulation window film can be used to prepare tungsten powder by hydrogen reduction method. Provided that other conditions are invariant, the particle size of tungsten powder can be increased if the reduction temperature is increased, or the reduction time is prolonged or the H2/WO3-x ratio is decreased. In addition, the appropriate reduction time should be selected in industrial production to make the reduction sufficient and prevent the furnace charge from flowing backwards. Under…

Blue tungsten oxide for transparent thermal insulation window film can be used to prepare tungsten powder — hydrogen reduction of blue tungsten oxide to prepare tungsten powder. And some scholars have studied the effect of H2/WO3-x ratio and reduction temperature on the particle size of tungsten powder. It is found that the effect of the reduction temperature on the particle size of tungsten powder is quite obvious if the speed is 1.4r/min, the inclination angle is 1.6°, and the reduction…

Blue nano tungsten oxide for transparent thermal insulation window film can be used in hydrogen reduction to prepare tungsten powder, wherein the process needs to be carried out in a rotary furnace. So, how does the rotary furnace work? The working principle of the rotary furnace during the preparing process of blue tungsten oxide by hydrogen reduction method is shown as below: At a certain inclination angle, the rotary furnace tube rotates, the scraper in the furnace slides the material…

Dark blue nano tungsten oxide for transparent thermal insulation window film can be used for hydrogen reduction in a rotary reduction furnace to prepare tungsten powder. According to the flow form of the furnace charge, the reduction can be divided into static reduction method and dynamic reduction method. Therefore, there are currently two types of reduction furnace, i.e. propulsion reduction furnace (static reduction) and rotary reduction furnace (dynamic reduction). Nevertheless, the process of the reduction of blue tungsten oxide by…

Blue tungsten oxide nanopowder for transparent thermal insulation film is mostly produced by adopting static reduction method in the current industrial production as the relationship between the process parameters and the particle size of tungsten powder is quite clear. As you may have known, the static reduction is one of the ways divided according to the flow pattern of materials, and the other way is dynamic reduction. Certainly, the dynamic reduction of rotary reduction furnace is also generally valued as…

Blue tungsten oxide nano powder may be used not only for the preparation of transparent thermal insulation film, which is widely used in the heat insulation fields of architectural window glass and automobile window glass, and can also be used in the preparation of tungsten powder by hydrogen reduction method. Some scholars have studied the relationship between the process parameters of blue tungsten oxide reduction process and the particle size of tungsten powder in industrial rotary reduction furnace, and analyzed…

Nano grain size blue tungsten oxide for transparent thermal insulation film is the most widely used raw material in the production of tungsten carbide powder. And blue tungsten oxide powder is usually prepared by weak hydrogen reduction using ammonium paratungstate (APT) as a raw material. The blue tungsten oxide powder obtained maintains the pseudomorphic morphology of the raw material APT. The main phase components of blue tungsten oxide are WO3 and WO2.90, and some blue tungsten oxide powders also have…

Ammonium paratungstate has a great influence on the performance of nano blue tungsten oxide for transparent thermal insulation film. And the physical properties of nano grain size blue tungsten oxide powder have a great effect on the properties of tungsten powder and tungsten carbide powder. Therefore, special treatment of ammonium paratungstate is needed for preparing high quality tungsten carbide powder. The special treatment is mainly conducted before or after calcination of ammonium paratungstate. Some scholars have carried out related experiments…