Isicelo:Esi sixhobo sisetyenziselwa ukususa iioksidi ezinozibuthe ezibuthathaka, irust iron crumb kunye nolunye ungcoliseko olusuka kumgubo ocolekileyo.Isebenza ngokubanzi kucoceko lwemathiriyeli kwizinto eziphikisayo, iiseramikhi, iglasi kunye namanye amashishini eeminerali angeyontsimbi, amayeza, amachiza, ukutya kunye namanye amashishini.