... crystal with low assay of Ti, Mn, Zn, Cu, V, Zr, Cr, L AluminaAlumina(industry grade) made by slkali-lime sintered,It is ... powdered crystal with low assay of Ti, Mn, Zn, Cu, V, Zr, Cr, Li, Pb, B, P, etc.It is used in ... powdered crystal with low assay of Ti, Mn, Zn, Cu, V, Zr, Cr, Li, Pb, B, P, etc.ApplicationEletrorefining aluminium, corundum eramics ...