What is tungsten ore?
Tungsten minerals are tungstate. There are only a few cations which can bind to [WO4]2- complex anion during mineralization, mainly Ca2+, Fe2+, Mn2+, Pb2+, followed by Cu2+, Zn2+, Al3+, Fe3+, Y3+ and so on. As a result, there are only 20 kinds of tungsten minerals and tungsten-bearing minerals in the earth’s crust, namely wolframite, tungsten-manganese ore, tungsten iron ore, and so on. Wolframite; scheelite group: scheelite (perovskite), molybdenum scheelite, copper scheelite; tungsten Hua minerals: tungsten hua, water tungsten hua, iron tungsten hua, yttrium tungsten hua, copper tungsten hua, hydrotungsten aluminum ore; unusual tungsten minerals: tungsten lead ore, clinoptilolite, molybdenum tungsten lead ore, tungsten zinc ore, tungsten bismuth ore, antimony tungsten pyrochlore, titanium yttrium thorium ore (containing tungsten). Tungsten) and tungsten sulphide ore.
Although more than 20 kinds of tungsten minerals and tungsten-bearing minerals have been discovered, wolframite and scheelite are the only ones with economic value for mining. Wolframite (Fe, Mn) WO4, containing WO3 76%; scheelite CaWO4, containing WO3 80.6%.
Application of Tungsten ore:
Tungsten is a high melting point rare metal or refractory metal in metallurgical and metal materials. Tungsten and its alloys are one of the most important functional materials in modern industry, national defense and high-tech applications. They are widely used in aerospace, atomic energy, shipping, automotive industry, electrical industry, electronic industry, chemical industry and many other fields. In particular, tungsten-based superalloys are mainly used in gas turbines, rockets, missiles and nuclear reactors, and high specific gravity tungsten-based alloys are used in anti-tank and anti-submarine armour piercing warheads.
Tungsten concentrates are used to produce tungsten, tungsten carbide, tungsten alloys and compounds.
Tungsten ore distribution in the world :
Tungsten ore is the dominant mineral resource in China. 252 mining areas with proven reserves have been found and proved. The cumulative proven reserves (WO3, the same below) are 6.375 million tons, of which A+B+C reserves are 2.32 million tons, accounting for 36.4%. By the end of 1996, tungsten ore reserves were 5 million 290 thousand and 800 t, of which A+B+C grade reserves were 2 million 281 thousand and 100 t, accounting for 43.1%. During the prospecting operation, according to the latest data released by the Ministry of Land, a number of world-class major discoveries have been made in the exploration of metal minerals, and tungsten deposits with reserves of 1.06 million tons have been identified.
China is rich in tungsten resources and is famous for its world reserves. Compared with the world reserves, China’s A + B + C reserves rank first in the world. Second Canada (reserve base 493 thousand T) and third Russia (reserves base 355 thousand T). China’s tungsten deposits are not only the world’s largest in reserves, but also the world’s largest in output and exports for a long time, so they are called “the three first in the world”. It has created and broken many world records and Chinese records recognized by the World Records Association of China.
Dayu County, Jiangxi, China, is a world-famous “tungsten capital”. China’s tungsten reserves rank first in the world, 3 times more than the total reserves (1 million 300 thousand tons) of more than 30 foreign countries. The other major tungsten producing countries are Canada and the United States.
Tungsten ore type existing in nature :
Tungsten is a widely distributed element, almost found in all kinds of rocks, but its content is relatively low. It is possible to form deposits as commercial ore mining by enriching the geological processes.
Tungsten ores are mainly divided into wolframite and scheelite. Wolframite is the most important ore to extract tungsten. It is also called wolframite. Wolframite is brown to black with metallic or semi metallic luster. Scheelite is granular in shape, white with yellow and fat lustre. Orange, double cone-shaped crystals with large crystals and transparent, deep orange. Coexisting with calcite muscovite and black cassiterite, scheelite and calcite are fluorescein. Heated or UV irradiated, slightly purple. It is the main raw material for tungsten smelting.