Vad används Dysprosium till?
99 % av hela världens produktion av dysprosium tillverkas i Kina och metallen används bland annat som komponentmetall till metallegeringar i vissa nukleära reaktorer. Tillsammans med holmium så har dysprosium den starkaste magnetiska förmågan av alla elementen.
Hur många jordartsmetaller finns det?
Sällsynta jordartsmetaller – eller rare earth elements (REE) – är en grupp med 17 grundämnen som alla är metaller. Behovet på de här metallerna har ökat kraftigt de senaste tjugo åren, i och med att efterfrågan på grön och smart teknik blivit högre.
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Is dysprosium a rare element?
| references. Dysprosium is a chemical element with the symbol Dy and atomic number 66. It is a rare earth element with a metallic silver luster. Dysprosium is never found in nature as a free element, though it is found in various minerals, such as xenotime.
How do you get dysprosium?
Production. The metal is obtained as a by-product in the commercial extraction of yttrium. In isolating dysprosium, most of the unwanted metals can be removed magnetically or by a flotation process. Dysprosium can then be separated from other rare earth metals by an ion exchange displacement process.
Are there any dysprosium-dominant minerals?
No dysprosium-dominant mineral (that is, with dysprosium prevailing over other rare earths in the composition) has yet been found. In the high- yttrium version of these, dysprosium happens to be the most abundant of the heavy lanthanides, comprising up to 7–8% of the concentrate (as compared to about 65% for yttrium).
Who discovered dysprosium?
One of 17 chemical elements classified as rare earths, dysprosium was first discovered by French chemist Paul-Émile Lecoq de Boisbaudran in 1886 as an impurity in erbia, the oxide of erbium, according to Jefferson Lab’s science education website. However, pure samples of dysprosium were not produced until the 1950s.