Tungsten powder is the basic raw material for making cemented carbide.
At present, the industrial production of pure tungsten trioxide or APT is mainly purify the crude sodium tungstate solution.
Tungsten powder is mainly used to manufacture tungsten filament for incandescent lamp, inert gas shielded arc welding and atomic hydrogen welding electrode etc..
In recent years, tungstate catalysts have attracted more attention for their narrower band gap and larger visible light range.
Many scholars have tried new methods to reduce production cost. The direct synthesis of tungsten cobalt alloy powder from ammonium metatungstate is an innovative attempt.
High purity quaternary ammonium paratungstate (APT) is a crystalline powder of ammonium paratungstate with a purity of 99.999% to 99.9999%.
Tungsten trioxide is a transition metal oxide, with a semiconductor character, has great potential for gas-sensitive materials, sensitive to a variety of gases, especially toxic gases.
With the development of high and new technology, the requirement of pure tungsten and its alloy material is higher and higher.
The preparation of tungsten powder from APT is usually calcined in the weak reducing atmosphere to produce yellow tungsten, blue tungsten or purple tungsten.
Ultra coarse tungsten powder is an important raw material for the preparation of ultra coarse tungsten carbide.
EDTA is a highly effective chelating agent. It has been widely used in chemical analysis, electroplating, medicine, industrial washing products, photographic products and other industries.
Four hydrogen sulfide is a chemical intermediate of nitro spray paint, rubber and other solvents, so is often used in the protection of hydroxyl groups.
Chlorothalonil is an efficient fungicide absorbed in organic pesticide, organic compounds but it is also easy to cause pollution of soil.
Bismuth tungstate (Bi2WO6) is the most common Aurivillius type oxide and is a hot spot in the field of photocatalysis.
Bismuth tungstate is a popular new visible light catalyst, especially petal shaped bismuth tungstate.
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