Acidic flux:
Acidic flux are those
flux which comes from substances like Lewis acid such as SiO2, H3PO4, HCl etc.
Acidic flux is used in metal welding or extractive metallurgy or Smelting. Silica (SiO2) is used to remove
basic earthly impurities (gangue) such as lime (CaO) or MgO.
read more >>