Production of ferroniobium in Brazil

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=OCE8zLNOIow

This is at the CBMM mine and factory in Araxa, Brazil. The ore contains about 2 wt% or niobium in the form of pyrochlore (niobium pentoxide). It is first enriched by floatation and then heated in an electric arc furnace with aluminium and iron. More information on • http://www.phase-trans.msm.cam.ac.uk/...

#############################

New on site