Tantalite, columbite concentrate
Calcined bauxite, silicon carbide, fused silica, DB magnesite, fused magnesite, graphite, met. Coke
Coltan, columbite, tantalite
Coltan
Columbite, Tantalite, Rare Earth Metal Ore
Coltan
Coltan
Calcined bauxite (shaft kiln, round kiln & rotary kiln bauxite), brown fused alumina, dead burnt magnesite, fused magnesite, silicon carbide, natural graphite, calcined kaolin, sintered mullite, refractory raw materials
Brown fused alumina, white fused alumina, DBM, calcined bauxite
Coltan
Coltan
Tantalite (27% of TA2o5)
Tantalite
High alumina cement, machineres, calcined bauxite, dead burnt magnesite, fused magnesite
Bauxite and ore
Ilmenite, bauxite
Tantalite
Coltan
