Noi: Hoʻohana nui ʻia ke apo papa kiʻekiʻe gradient magnetic separator i loko o ka hematite pulu, limonite, siderite, chromite, ilmenite, wolframite, tantalum a me niobium ore a me nā minerala palupalu palupalu, a me nā mineral non-metallic, e like me ka quartz, feldspar no ka wehe ʻana i ka hao haumia a me ka hoʻomaʻemaʻe. .