Importance for Tungsten Trioxide Extraction

Tungsten is one of the strategic resources of China, its importance means extracting tungsten from tungsten trioxide industrial waste - turning waste into treasure is typical shift resources into the way. With the rapid development of China's industrial economy, the demand for all kinds of mineral resources is increasing rapidly, and its growth rate is much higher than the growth rate of the national economy, mineral resources, stockpiling, production, consumption contradiction between the increasingly prominent.

On the other hand, China caused extensive production and development of a great waste of resources, but also exacerbated the damage to the environment pollution and resource. In order to improve the level of protection of China's mineral resources, making full use of his country's resources, mineral resources in China would like to take advantage of the way "to develop a resource-based, two-renewable resources, new and alternative resources development and utilization of both," the direction of change. Tungsten Resources it is a strategic resource, reserve resources, is one of China's protection of minerals.

The storage of China tungsten ore is the largest in the world, in 2009 the tungsten reserves (in tungsten trioxide mainly dollars) to 1.386 million tons. According to the US Bureau of Mines statistics, in 1994 China accounted for 44.3% of tungsten storage world, but by 2001 had fallen to 35.5%. However, the Chinese tungsten ores taste is not high, Bonanza (referring to tungsten oxide content of 1% of deposits) accounted for only one-fifth of total reserves; easy beneficiation reserves account for only 27.2% of total reserves, total reserves .

More than 70% of scheelite low taste, large complex symbiosis, smelting difficulty. China tungsten ore utilization of secondary resources (ie, tungsten-containing industrial waste) is also very low, only about 10% of tungsten supply, while in developed countries this indicator was above 30%. In addition, China's domestic recycling waste tungsten alloys, waste carbide in more than two-thirds are imported from foreign waste. According to statistics, every year a large number of tungsten trioxide containing compounds are used as garbage abandoned. Therefore. The extract scrap tungsten trioxide is the most important moment, an urgent matter.

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