Tungsten and tungsten alloy group represent a wide range of uses extending from every day uses(oil of an incandesent lamp) to component of nuclear fusion reactor or ion drive motors in the space propes. The reason of this range of uses lies in the many out standing properties f tungsten, high melting point, low vapour pressure, high atomic number, good electrical and thermal conductivity.

Recently, the recycling of tungsten alloys techniques are economically viable and ecologically acceptable.

Scrap recycling is a very important factors on the supply of tungsten material,where 1/3of the total tungsten demand is supply by tungsten alloy scrap. Furthermore, the least vauable scrap, like low grade grinding sludge,contains about 15 times more tungsten than the advantage ore. Most scrap material are even richer in tungsten than ore concentration.