High Purity Tungsten is a tungsten material that has been processed with high purity. Tungsten is a metallic element with a high melting point, high density and good heat resistance that is used in a wide variety of applications including electronics, lighting, aerospace, nuclear energy and chemicals.
High-purity yellow tungsten is usually prepared from raw ore through the following steps:
Tungsten concentrate raw material extraction
To extract tungsten concentrate from tungsten ore, flotation, magnetic separation, gravity separation and other processes are usually used to separate and enrich tungsten ore.
Tungsten concentrate smelting
The extracted tungsten concentrate is smelted, generally using ammonium tungstate reduction method or ammonium oxide reduction method. These methods can convert tungsten ore into powder or bulk material of tungsten metal.
refining
Tungsten materials obtained after smelting usually still contain impurities. Through further refining processes, such as hot pressing, chemical treatment, etc., residual impurities can be removed and the purity of tungsten materials can be improved.
High-purity yellow tungsten usually has very high purity, and its impurity content is very low, which is generally required to be below the level of ppm (parts per million) or ppb (parts per billion). The purity of high-purity yellow tungsten is very important for some demanding applications, such as photolithography in the semiconductor industry, hot cathodes in vacuum equipment, high-temperature heating devices, etc.
It should be noted that the preparation process of high-purity yellow tungsten requires strict production control and purification technology to ensure that the obtained tungsten material has the required high purity and stability.
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