Introduction of tungsten

China is the country with the richest tungsten resources in the world. There are 252 proven mineral deposits distributed in 23 provinces (districts). The total reserves of WO ₂ , 5.29 million tons, ranking first in the world. The output is also the world's first, and it is the traditional export of mineral products in China. In terms of provinces (districts), Hunan (mainly scheelite ) and Jiangxi ( black-tungsten ore) are the largest, with reserves accounting for 33.8% and 20.7% of the total national reserves respectively; Henan, Guangxi, Fujian, Guangdong, etc. The province (district) is second. The main tungsten mining areas include Hunan Shizhuyuan Tungsten Mine, Jiangxi Xihua Mountain, Daji Mountain, Pangu Mountain, Guimei Mountain, and Piaotang. A few days of tungsten ore, Guangdong Lianhuashan Tungsten Mine, Fujian Xuluokeng Tungsten Mine, Gansu Ta'ergou Tungsten Mine, Henan Sandaozhuang aluminum- tungsten mine. In the aspect of tungsten deposit type, the stratified superimposed deposit and the crust source modified granite deposit are the most important; the crust-mantle source is the same as the Ronghuagang (Xinchang) type rock deposit, the layer-controlled remodeling deposit and the epigenetic tungsten deposit. From the perspective of metallogenic age, the earliest Paleozoic, the Late Paleozoic was less, the Mesozoic formation of the most tungsten, the new generation of tungsten ore is rare.
Tungsten (Tun), TUNGSTEN, from the Swedish tung sten, meaning "heavy stones." The symbol of W, which came from its German name Woifram, was discovered in 1783. 3,140 deg.] C having the highest melting point is a metal, made of tungsten filament lamps withstand high heat, producing a tip Other uses include ultra-high speed drilling and auto dispenser.
Tungsten was discovered by the Swedish chemist CWScheele in 1781 from the mineral known as heavy stone (now known as scheelite) and named after the Swedish tung (heavy) and sten (stone) compound tungsten. New elements. In 1783, the Spanish de Luar brothers (F•de Elhuyar) produced tungsten oxide from black tungsten ore and reduced it to tungsten powder with carbon.
Tungsten is silver white, the highest melting point metal, melting point up to 3400 ° C, the first of all metals, boiling point 5555 ° C, specific gravity (single crystal tungsten) 19.3, and has high hardness, good high temperature strength and conductivity, heat transfer performance, It is chemically stable at normal temperature, corrosion resistant, and does not work with hydrochloric acid or sulfuric acid.
Tungsten is a high melting point rare metal or a refractory rare metal in the fields of metallurgy and metal materials. Tungsten and its alloys are one of the most important functional materials in modern industrial, national defense and high-tech applications. They are widely used in aerospace, atomic energy, marine, automotive, electrical, electronics, chemical and many other fields. In particular, tungsten-containing superalloys are mainly used in gas turbines, rockets, missiles and nuclear reactor components, and high-specific gravity tungsten-based alloys are used in anti-tank and anti-submarine armor-piercing warheads.
Tungsten concentrates are used to produce tungsten, tungsten carbide, tungsten alloys and compounds.
The United States, Japan, and Western Europe are the world's major consumers of tungsten, accounting for 60% to 65% of the world's total consumption, but these countries' tungsten concentrate production can only meet 12% to 15% of demand, mostly relying on imports to meet the needs. And thus the most important importer of tungsten. China is the world's largest supplier of tungsten.

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