Tungsten is a rare element in the earth's crust is only 0.007%, China's tungsten reserves currently proven reserves of about 500 million tons, accounting for 55% of the world's total reserves, ranking first in the world. Especially in the west of Guangxi, after Hunan, Guangdong, Jiangxi, Fujian, east Nanling Mountains area, tungsten ore up.
Tungsten ore divided into black and white tungsten ore tungsten ore, is a rare metal, China's current mining production and processing of mainly black tungsten ore, particularly for military purposes. The hardness of tungsten, heavy, tough nature, can rolling into sheets or drawn into filaments, good conductivity. Main purposes: with Chin, tantalum, chromium, can be made of carbide alloy drilling for geological drilling and mining drill bit, piercing, metal cutting tools, aircraft engines, spacecraft and satellites structural elements and resistance grinding of the material.
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