Isetyenziselwa ukususwa kwesinyithi kunye nokuhlanjululwa kwamaminerali angeyo-metallic kwi-processing emanzi, ngokukodwa ukukhutshwa kwentsimbi emanzi ye-non-metallic minerals efana nesanti ye-quartz, i-potassium feldspar, kunye ne-soda feldspar.Ukongezelela, inomsebenzi wokuhlukana kakuhle obuthathaka. Amaminerali amagnetic afana ne-hematite, i-limonite, i-specularite, i-siderite, i-ore ye-manganese, kunye ne-tantalum-niobium ore.