Tungsten bar

Wolframite, scheelite , tungsten, iron ore and other minerals containing tungsten. Important tungsten&moly tungsten mine in Bolivia , California and Colorado, China , Portugal, Russia and South Korea. China produces 75% of the world's tungsten . Obtain pure tungsten carbide ball metal by reduction of oxides of carbon .

Tungsten estimated worldwide total storage of 700 tons, of which about 30% is wolframite, scheelite 70% . However, most of these deposits can not be mined economical manner . According to the current consumption of these deposits is only enough to use about 140 years . Another way to obtain tungsten carbide rod is recycled. Recovery of tungsten ore than tungsten content, in fact very profitable .