Koltan
 Koltan | |
|---|---|
 | |
| Bayanai | |
| Ƙaramin ɓangare na | Ore |
| Kayan haɗi |
columbite-(Mn) (en)  , columbite-(Fe) (en) , tantalite-(Mn) (en) da tantalite-(Mg) (en) |
Coltan (Turanci: Coltan, cikakken suna: columbite-tantalite kuma an san shi a masana'antu a matsayin tantalite) ƙarfe ne mai ƙarancin ƙarfe wanda aka cire abubuwa niobium da tantalum. Ma'adinin niobium mai rinjaye a cikin coltan shine columbite (bayan asalin sunan niobium na Amurka), kuma ma'adinin tantalum mai rinjaye shine tantalite.[1]
Ana amfani da Tantalum daga coltan don ƙera capacitors na tantalum waɗanda ake amfani da su don wayoyin hannu, kwamfutocin mutum, kayan lantarki na mota, da kyamarori.[2] Ma'adinai na Coltan [3]ya yadu a Jamhuriyar Demokradiyyar Kongo.[4]
Kimanin kashi 71% na wadatar tantalum ta duniya a cikin 2008 an haƙa shi, kashi 20% daga sake amfani ne, kuma ragowar ta fito ne daga tarkace da kaya. Ana hakar ma'adanai na Tantalum a Jamhuriyar Demokradiyyar Kongo, Colombia, Rwanda, Australia, Brazil, China, Habasha, Mozambique da Kenya.[5] Hakanan ana samar da Tantalum a Thailand da Malaysia a matsayin samfur na hakar ma'adinai da narkewa. Ana bincika ma'adanai masu yuwuwa a nan gaba, a cikin tsari mai saukowa, a Misira, Greenland, China, Australia, Finland, Kanada, Najeriya da Brazil
A duniya, kashi 60% na dukkan kamfanonin hakar ma'adinai sun yi rajista tare da musayar hannun jari mai tsari sosai a kasar Toronto da Vancouver. Koyaya, saboda ka'idojin muhalli, babu hakar ma'adinai na coltan a halin yanzu da ke faruwa a Kasar Kanada kanta, [6] ban da ma'adinin da aka tsara a Blue River, British Columbia. A Kasar Kanada, Tanco Mine kusa da Bernic Lake a Manitoba yana da tanadin tantalum, shine mafi girma a duniya mai samar da Caesium, kuma Global Advanced Metals Pty Ltd ne ke sarrafa shi. Tattaunawar ma'adinai ta Kanada ta Natural Resources Canada, wanda aka sabunta a cikin 2017, bai ambaci coltan ba.[7]
Manazarta
[gyara sashe | gyara masomin]- ↑ Tantalum-Niobium International Study Centre, Coltan, archived from the original on 14 January 2016, retrieved 27 January 2008
- ↑ "Commodity Report 2008: Tantalum" (PDF). United States Geological Survey. Retrieved 2008-10-24.
- ↑ Congo: war-torn heart of Africa, 1 December 2008, archived from the original on 25 August 2013, retrieved 18 October 2012
- ↑ Breaking the Silence- Congo Week, 15 December 2009, archived from the original on 25 July 2011, retrieved 11 October 2011.
- ↑ Empty citation (help) Empty citation (help)
- ↑ John Lasker (29 October 2009). "Digging for Gold, Mining Corruption: One of Africa's Poorest and Most Embattled Countries is Prey to Canadian Mining Companies Searching for the Last Great Gold mine".
- ↑ "IRC Study Shows Congo's Neglected Crisis Leaves 5.4 Million Dead; Peace Deal in N. Kivu, Increased Aid Critical to Reducing Death Toll". 22 January 2008. Retrieved 17 April 2011.