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Zr
Zirconium

History
 
Zirconium oxide was established member of the Berlin Academy of Sciences, Martin Heinrich Klapport in 1789. Swedish chemist Jacob Jens Bertselius got metallic zirconium after 35 years. In the 20's of the 20-century Dutch scientist van Arkel de Boer invented an industrial method for obtaining zirconium. This method was improved by Kroll. The first use of zirconium oxide got in the filament lamps German scholar Walter Hermann Nerst.

Nowadays

Zircon oxide successfully used in the manufacture of silica refractory bricks for furnaces. The metal zirconium is added to the melting of steel, for the treatment of sulfur and its gases. The metal zirconium is the material for the various engine parts, laboratory and medical equipment, catalysts. But the main consumer of zirconium has become a nuclear power, where it makes nuclear reactors.

Date ASIA EUROPE USA
26/12/2009 24.9 24.9 24.9
19/12/2009 24.9 24.9 24.9
12/12/2009 24.9 24.9 24.9
05/12/2009 24.9 24.9 24.9
28/11/2009 25.25 25.25 25.25
21/11/2009 24.9 24.9 24.9
14/11/2009 28.21 28.21 28.21
07/11/2009 28.65 28.65 28.65
31/10/2009 27.96 27.96 27.96
24/10/2009 28.52 28.51 28.51
17/10/2009 24.9 24.9 24.9
10/10/2009 24.91 24.91 24.91
02/10/2009 24.9 27.9 27.9
25/09/2009 24.9 24.9 24.9
18/09/2009 27.86 27.86 27.86
12/09/2009 27.82 27.82 27.82
05/09/2009 27.96 27.96 27.96
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