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Tantalum Widely Used
May 25, 2017

The metal tantalum is a kind of bluish light gray metal, because of its many singular characteristics, it has a wide range of application fields, so it is known as Tantalum the "Metal Kingdom" versatile. The quality of tantalum is very hard, and the hardness can reach 6-6. 5. It has a melting point of up to 2,996 Shan, second only to tungsten and rhenium, ranking third. Tantalum is malleable and can be drawn into Tantalum filaments or made into thin foil. Its thermal expansion coefficient is very small, one degrees Celsius per increase only 6.6 out of 10,000. In addition, it is very resilient and superior to copper. Tantalum also has a very good chemical Tantalum properties, with very high corrosion resistance. Both in cold and hot conditions, hydrochloric acid, nitric acid and "aqua regia" have no reaction. The tantalum was immersed in 200 Shan sulfuric acid for one years and the surface was only damaged by 0. 006 mm. It has been proved that tantalum has no effect on alkali solution, chlorine gas, bromine water, dilute Tantalum sulfuric acid and many other reagents, and only reacts under hydrofluoric acid and hot concentrated sulfuric acid. Such a situation is relatively rare in metals. The characteristics of tantalum have made its application field very wide. In the preparation of various inorganic acid equipment, tantalum can be used to replace stainless steel, the life can be raised dozens of times times more than stainless steel. In addition, in the chemical, electronic, electrical and other industries, Tantalum Tantalum can replace the past need to be undertaken by precious metals platinum, so that the cost is significantly reduced. In addition, tantalum is an important element in refining super steel, corrosion resisting steel and heat-resisting alloy, which can provide special materials for developing space technology such as rockets, spacecraft and jet aircraft. Tantalum Non-magnetic alloys made of tantalum and tungsten are widely used in the electrical industry, especially tantalum and carbon carbide tantalum, with great hardness, even in high conditions and in the same way as gold and steel. A knife made with it can be used to cut many hard alloys at high speed, and the various bits made from it can be substituted for the hardest alloys or gold steel. Therefore, Tantalum is also considered as a "vitamin" in smelting. Tantalum can also play an important role in modern medicine. It has been proved that tantalum not only has no damage to human body, but also the human body can grow on it, which is called bio-solubility. Using this characteristic of tantalum, doctors used to repair and seal fractures and defects in fractured skulls and limbs. At the same time, tantalum can also be made into a hairline one-tenth Tantalum thinner than hair, used as a suture line for visceral surgery, or embedded in artificial eye. This tantalum wire can even replace tendons and nerve fibres. Medical household tantalum Plate made of artificial ears, installed in the head, and then from the leg transplant skin, after a period of time, the newly transplanted skin is very good, so that people can hardly see is a man-made tantalum ear

The coarse selection of tantalum-niobium ore beneficiation is generally used for gravity separation, and the selection of the combined process of gravity separation, flotation, Tantalum electromagnetic separation or metallurgical selection, the treatment of ore with a large amount of powder ore or original mud, washing operation is essential, and the use of high efficiency grinding classification equipment, in order to reduce the

The common collector of tantalum-niobium flotation is of fatty acid, sour type, phosphonic acid, hydroxy oxime acid, cation collector, and so on, the environmental pollution of collector and the cost of medicament are important.

With the development of the chemical industry, the source of raw materials, the synthesis process is simple, easy to biodegradable, good selectivity, non-toxic harmless, affordable agents will continue to appear to meet the needs of tantalum and niobium concentrator.

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