Oxford Research Group | Blog | The Politics of Coltan: An Interview .Nov 28, 2016 . Coltan is the nickname for the mineral 'tantalite'. .. was largely because the price of coltan on the international market boomed that year and in 2000. . Three big minerals processing plants bought much of the coltan that was.coltan processing plant cost,Coltan processing technology developed for Africa advancesNov 4, 2016 . Coltan processing technology developed for Africa advances . The capital cost to set up a processing plant is substantially reduced and the.
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