Skip to main content

TANTALUM ORE

Tantalum (previously known as tantalium (/tænˈtæliəm/, tan-TAL-ee-əm)) is a chemical element with the symbol Ta and atomic number 73. A rare, hard, blue-gray, lustrous transition metal, tantalum is highly corrosion resistant and occurs naturally in the mineral tantalite, always together with the chemically similar niobium. It is part of the refractory metals group, which are widely used as minor component in alloys.




detailed description:

The chemical inertness of tantalum makes it a valuable substance for laboratory equipment and a substitute for platinum, but its main use today is in tantalum capacitors in electronic equipment.
History
Tantalum was discovered in Sweden in 1802 by Anders Ekeberg. One year earlier, Charles Hatchett had discovered the element columbium. In 1809, the English chemist William Hyde Wollaston compared the oxides derived from both columbium—columbite, with a density 5.918 g/cm3, and tantalum—tantalite, with a density 7.935 g/cm3, and concluded that the two oxides, despite their difference in measured density, were identical. He decided to keep the name tantalum. After Friedrich Wöhler confirmed these results, it was thought that columbium and tantalum were the same element. This conclusion was disputed in 1846 by the German chemist Heinrich Rose, who argued that there were two additional elements in the tantalite sample, and he named them after the children of Tantalus: niobium (from Niobe, the goddess of tears), and pelopium (from Pelops). The supposed element "pelopium" was later identified as a mixture of tantalum and niobium, and it was found that the niobium was identical to the columbium already discovered in 1801 by Hattchet.
The differences between tantalum and niobium were demonstrated unequivocally in 1864 by Christian Wilhelm Blomstrand, and Henri Etienne Sainte-Claire Deville, as well as by Louis J. Troost, who determined the empirical formulas of some of their compounds in 1865. Further confirmation came from the Swiss chemist Jean Charles Galissard de Marignac, in 1866, who proved that there were only two elements. These discoveries did not stop scientists from publishing articles about the so-called ilmenium until 1871. De Marignac was the first to produce the metallic form of tantalum in 1864, when he reduced tantalum chloride by heating it in an atmosphere of hydrogen. Early investigators had been only able to produce impure tantalum, and the first relatively pure ductile metal was produced by Werner von Bolton in 1903. Wires made with metallic tantalum were used for light bulb filaments until tungsten replaced it in widespread use.
The name tantalum was derived from the name of the mythological Tantalus, the father of Niobe in Greek mythology. In the story, he had been punished after death by being condemned to stand knee-deep in water with perfect fruit growing above his head, both of which eternally tantalized him. (If he bent to drink the water, it drained below the level he could reach, and if he reached for the fruit, the branches moved out of his grasp.) Ekeberg wrote "This metal I call tantalum … partly in allusion to its incapacity, when immersed in acid, to absorb any and be saturated."

For decades, the commercial technology for separating tantalum from niobium involved the fractional crystallization of potassium heptafluorotantalate away from potassium oxypentafluoroniobate monohydrate, a process that was discovered by Jean Charles Galissard de Marignac in 1866. This method has been supplanted by solvent extraction from fluoride-containing solutions of tantalum.

PRICE
$125/KG

For more information:

mobile: +2348039721941

contact person: emeaba uche

e-mail: emeabau@yahoo.com

website: www.franchiseminerals.com


Comments

Post a Comment

Popular posts from this blog

SPODUMENE [LiAl(SiO3)2]

Spodumene   is a   pyroxene   mineral   consisting of   lithium   aluminium   inosilicate ,   Li Al ( Si O 3 ) 2 , and is a source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), yellowish-green or emerald-green   hiddenite , prismatic crystals, often of great size.   Detailed d Single crystals of 14.3 m (47 ft) in size are reported from the   Black Hills   of   South Dakota ,   United States . [5] [6] The normal low-temperature form α-spodumene is in the   monoclinic   system whereas the high-temperature β-spodumene crystallizes in the   tetragonal   system. The normal α-spodumene converts to β-spodumene at temperatures above 900 °C. [4]   Crystals are typically heavily striated parallel to the principal axis. Crystal faces are often etched and pitted with triangular markings. Discovery and occurrence Spodumene was first des...
Post a Comment
Read more

COLUMBITE[(Fe, Mn)Nb2O6]

Columbite , also called  niobite ,  niobite-tantalite  and  columbate  [( Fe ,  Mn ) Nb 2 O 6 ], is a black  mineral  group that is an ore of  niobium . It has a submetallic  luster  and a high density and is a niobate of  iron  and  manganese .  Detailed description This mineral group was first found in  Haddam, Connecticut , in the United States. It forms a series with the  tantalum -dominant analogue  ferrotantalite  and one with the manganese-dominant analogue  manganocolumbite . The iron-rich member of the columbite group is  ferrocolumbite . Some tin and tungsten may be present in the mineral.  Yttrocolumbite  is the yttrium-rich columbite with the formula (Y,U,Fe)(Nb,Ta)O 4 . It is a radioactive mineral found in  Mozambique . Columbite has the same composition and crystal symmetry ( orthorhombic ) as  tantalite . In fact, the two are often grouped t...
Post a Comment
Read more

MAGNESIUM ORES

Magnesium is a chemical element with the symbol Mg , atomic number 12 and common oxidation number +2. It is an alkaline earth metal and the eighth most abundant element in the Earth's crust , where it constitutes about 2% by mass, [2] and ninth in the known Universe as a whole. [3] [4] This preponderance of magnesium is related to the fact that it is easily built up in supernova stars from a sequential addition of three helium nuclei to carbon (which in turn is made from three helium nuclei). Magnesium ion's high solubility in water helps ensure that it is the third most abundant. Detailed description: Magnesium is the 11th most abundant element by mass in the human body; its ions are essential to all living cells , where they play a major role in manipulating important biological polyphosphate compounds like ATP , DNA , and RNA . Hundreds of enzymes thus require magnesium ions to function. Magnesium is also the metallic ion at the center of chlorophyll...
Post a Comment
Read more