Ngwa:Vetikal mgbanaka elu gradient mmiri magnetik separator igwe ejirila na nkewa mmiri maka ọla magnetik adịghị ike dị ka hematite, limonite, siderite, chromites, limonite, wolfram wdg yana nkewa ígwè maka ịdị ọcha nke mineral na-abụghị ọla, dị ka quartz. , feldspar, nightline, fluorite, kaolin wdg.