Tungsten,a metal element, atomic number 74, atomic weight 183.85.Steel gray or silvery-white, high hardness, high melting point, room temperature without air attack; mainly used for the manufacture of the filament and high-speed cutting steel, hard mold, also used in optical instruments, chemistry instruments. China is the world's largest tungsten storage power.
 
Tungsten is part of non-ferrous metals, is also an important strategic metal, tungsten ore in ancient times was called "heavy stone." 1781 by the Swedish chemist Carl Wilhelm Scheele discovered scheelite, and extract new elements acid - acid, in 1783 by the Spanish Air Asia Depp found wolframite also extract the acid, the same year, with carbon reduction of tungsten trioxide first got tungsten powder, and named the element. Tungsten content in the crust is 0.001%. Tungsten minerals have been found in 20 species. Tungsten deposit is generally accompanied by granitic magma activity and the formation. After tungsten smelting after the silver-white lustrous metal, high melting point, great hardness. Tungsten is the highest melting points.

The most high-temperature aluminum heat-400g tungsten oxide thermite video.

Land and Resources has announced the list of the second batch of 33 mines eligibility for National Mine Park, Chenzhou Mining Shizhuyuan Park and Guiyang Baoshan Mine Park list.

Mine Park is a showcase of human remains of the landscape as the main mining, mining development reflects historical connotations, have research value and educational function, available tour to visit, conduct scientific investigation and scientific literacy of specific spatial zone.
 
China has 61 national parks Mine Park qualification. The unit was awarded the qualification requirements shall be carried out by the Ministry of Land and construction in the park during the two years of construction, the building standards be officially named National Mine Park.

The First Step: An elongated strip through the mold pipe
 
The Two Step : Wegmentation, typically 60mm or 400mm length
 
The Third step: Clear, drying, filling, sealing
 
The Fourth step: Testing, packaging, storage
 
Note: 1, The matrix preheat; 2, Flame size; 3, Welding distance; 4, Electrode angle.
In the process of welding strict compliance: oxygen and acetylene bottles can not be put together in order to prevent dangerous!

State Administration of Taxation reported anomalies appear for export tax rebates recently issued "on the strengthening of some of the goods export tax rebate audit," which called for efforts to strengthen the export tax rebate audit of raw materials such as silver, tungsten circuit parts and raw materials for welding parts products.

Recently Research Ministry formulated the "tungsten, tin, antimony smelting enterprise access Announcement Interim Measures," around the MIIT department of tungsten in the region, tin, antimony smelting enterprise access Announcement application and reported the Ministry of Industry, the experts on the application materials for review, the focus sampling and publicity after the Ministry will publish the announcement in the form of a list of companies fulfill the access conditions.

In 2009, Fujian Science and Technology Awards Conference held on March 16 this year, director of the National Engineering Research Center of tungsten materials, Xiamen Golden Egret Special Alloy Co., Ltd., Wu Chong Hu, vice president of science and technology, Fujian Xiamen Tungsten Co., Ltd. obtained significant contribution Award, outstanding Technical talent Award Fujian Province, Science and Technology Award in Xiamen, Fujian Province, known as the technology sector, "the cow".

Chonghu Wu Xiamen Tungsten Group is one of the founders lifetime in dealing with tungsten is China's leading tungsten smelting and carbide experts and industry leaders have repeatedly presided over the completion of the national "863" plan, the State Torch Program, national key new product plans, national Science and Technology support Program and Xiamen major industrial projects, and achieved significant technological achievements 10 The remainder, patented and national, provincial and municipal science and technology awards a number of inventions.

Chonghu Wu Equipment innovation is still much higher than after the introduction of the transformation capacity to raise the level of 2-3 times the energy consumption is reduced three percent, "which makes top experts in the field of foreign tungsten surprised, they wanted to find ways to buy our equipment," now the world's five largest companies want to stake Carbide spoonbill.

There are micro-Bo said, "Someone took the Industrial and Commercial Bank of China sold one kilogram of gold with gold and silver certificates and invoice processing plants to sell to get verified indeed ICBC sold factory boss received, accurate test the purity of gold must go to Nanjing, If the report comes a week after the bullion doped "Iridium".

Jiangxi University professor eighth National Congress, led chaired by his "white (black) tungsten ore preparation of ultra-clean and efficient high-performance tungsten powder sets of technology and industrialization" project research results at home and the first to achieve the industrialization of tungsten "Green smelting" changed the Chinese tungsten smelting position in the international arena.

Professor Wan Linsheng for the low yield of tungsten metal industry, high smelting costs, waste of resources and serious environmental pollution, APT can not produce high-performance powder, which seriously hampered the international competitiveness of China's tungsten industry and sustainable development, this major the key question, which lasted 20 years, systematically studied the crystallization kinetics of APT, independent research and development "APT physical control" and "low-alkali efficient decomposition", "blur exchange - super desorption", "mother caustic crystalline transformation - depth deaminase" "dual exhaust backflow vortex crystalline ammonia condensation "five core technology at home and abroad for the first time in black and white tungsten ore efficient and clean preparation of ultra-high performance industrial production of tungsten powder. Independently designed and built the world's first largest annual 15,000 tons APT, tungsten nanoscale tungsten powder and tungsten carbide powder smelter.