Tungsten Ore,Scheelite,Wolframite-I

Tungsten is a gray-white metallic element that is stable and is very resistant to acids and bases. It does, however, oxidize in air, especially at higher temperatures. It has the highest melting temperature of any metal (3422 degrees C, 6192 degrees F), and the second highest of all elements (Carbon is highest). Tungsten was named from the Swedish words "tung sten" meaning "heavy stone."

Tungsten is retrieved from the ore minerals scheelite (CaWO₄) and wolframite ((Fe,Mn)WO₄). Of the world’s tungsten reserves, nearly half are found in China. Canada and Russia also have large reserves. A significant amount of tungsten is recovered through recycling of scrap tungsten products.

Tungsten is mixed with carbon to make a very strong, very resistant material called tungsten carbide. Tungsten carbide is used to make cutting tools and wear-resistant tools for metalworking, drilling for oil and gas, mining, and construction. These applications account for more than 60% of the tungsten consumed in the US each year.

 

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