Was hat Coltan mit Handys zu tun?
Coltan fördert bewaffnete Konflikte Schon jetzt kursieren Schätzungen, dass es in Deutschland mehr Handys als Menschen gibt. Unwahrscheinlich ist das nicht: Überlege einmal selbst, wie viele Handys du oder Bekannte von dir schon hatten. Die Nachfrage nach Coltan steigt jedes Jahr, doch die Ressourcen sind endlich.
Was haben Handys mit Afrika zu tun?
Die Demokratische Republik Kongo ist einer der größten Rohstofflieferanten weltweit. Tantal, Kobalt, Wolfram, Zinn und Gold sind einige der Rohstoffe, die für die Herstellung eines Handys benötigt werden. Sie alle werden vorwiegend in dem westafrikanischen Staat gefördert.
What is the meaning of coltan?
Coltan is short for columbite-tantalite, a dull metallic ore. When refined, coltan becomes a heat resistant powder, metallic tantalum, which has unique properties for storing electrical charge.
Where can I find coltan?
Mining in Congo: Approximately 80% of the world’s supply of Coltan is found in the Democratic Republic of Congo. Coltan is mined by hand in the Congo. Their methods are very similar to how gold was mined in California during the 1800s.
What is the common name of tantalite and coltan?
Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore, from which the elements niobium and tantalum are extracted. The niobium-dominant mineral in coltan is columbite (after niobium’s original American name columbium), and the tantalum-dominant mineral is tantalite.
What are the properties of refined coltan?
When coltan is refined it becomes a heat resistant powder that can hold a high electric charge. The properties of refined coltan is a vital element in creating devices that store energy or capacitors, which are used in a vast array of small electronic devices, especially in mobile phones, laptop computers, pagers, and other electronic devices.