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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…

Blue nano tungsten oxide for near-infrared shielding material can be prepared by the following two methods: 1.0 Place the raw material APT into the feed bin and feed it into a rotary furnace with a vacuum (0.5-0.8) X14Pa at a speed of 225 kg/h through a screw feeder, and inlet the protective gas — nitrogen. The temperature control is: 800°C in one zone, 800°C in two zone, 700°C in three zone, 640°C in four zone, 640°C in five zone, and…

Blue nano tungsten oxide for thermal insulation paper may be prepared by a new preparation system. And the specific steps are shown as below. The APT was placed in a feed bin, and fed into a rotary furnace of a vacuum degree (0.5-0.8) X104 Pa at a speed of two hundred kilograms per hour through a screw feeder. A protective gas — nitrogen gas was introduced. The temperature control is: one zone of 750°C, two zone of 750°C, three zone…

Quality of blue nano tungsten oxide for thermal insulation film can affect the quality of tungsten powder and tungsten carbide powder at the back end. Therefore, it is necessary to produce high-quality blue tungsten oxide powder with high specific surface area to meet the requirements of raw materials for ultrafine tungsten powder and tungsten carbide powder. Certainly, there must be good preparation processes and equipment support. Researchers have explored a method for preparing high specific surface area of blue tungsten…

Blue nano tungsten oxide for ceramic microsphere may be prepared by using a preparation system with multiple temperature zone control zones so that the production efficiency of tungsten powder can be improved by improving the kinetic conditions during reduction process. The preparation of blue tungsten oxide by this process not only improves the doping performance of blue tungsten powder, but also facilitates the preparation of ultrafine tungsten powder and tungsten carbide powder. The preparation system of the blue tungsten oxide…

Blue nano tungsten oxide for thermal insulation masterbatch has a large specific surface area, which facilitates the preparation of ultrafine tungsten powder and tungsten carbide powder. This is because the large specific surface area means that the chemical activity is larger. And at the same time, the hydrogen reduction rate is faster. The specific surface area of blue tungsten oxide refers to the total surface area of the unit mass of blue tungsten oxide powder, which is usually expressed by…

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…

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…

Blue nano tungsten oxide for thermal insulation dispersion may be prepared in a rotary kiln using ammonium paratungstate (APT) as a raw material. In the process of reducing APT to prepare blue tungsten oxide, after the formation of blue tungsten oxide (WO2.9), the WO2.9 particles enter the discharge hopper from the furnace tube and slide into the discharge pipe along the inverted cone funnel. At the same time, the water vapor, N2, H2 and part of the fine powder coming…

Blue nano tungsten oxide may be applied for thermal insulation dispersion liquid, which is mainly used in the field of heat insulation of car and building. As such thermal insulation material is a kind of promising product in heat insulation field of building and auto, it is important to study the production method of blue tungsten oxide. As you may have known, nano grain size blue tungsten oxide (WO2.9) may be prepared by using ammonium paratungstate (APT) as material. The…