chemical used for chrome flotation process in nepal

Chromium ores are often classified based on their elemental composition and industrial use into highchromium 4655 Cr2O3 CrFe 21 used for metallurgical processes highiron 4046 Cr2O3 CrFe 1521 used for chemical and metallurgical purposes and highaluminum 3338 Cr2O3 2234 Al2O3 used widely as refractory