e/Zinc refining

Information
has gloss	eng: Zinc refining is the process of purifying zinc to super high grade (SHG) zinc, which is at least 99.995% pure. This process isn't usually required when smelting zinc through electrolysis processes, but is needed when zinc is produced by pyrometallurgical processes, because it is only 98.5% pure.
lexicalization	eng: Zinc refining
instance of	(noun) a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende Zn, zinc, atomic number 30