IRON ORE CRUSHING & PROCESSING_ Heavy IndustryAfter crushing, grinding, magnetic separation, flotation, re-election and other procedures,natural minerals(iron ore)elected gradually of iron. Iron exist in nature.iron ore crushing,Crushed Iron Ore (Ex Nihilo) - Feed The Beast Wiki - FTB ForumsMay 19, 2016 . Crushed Iron Ore is an item from Ex Nihilo which can be made into Iron Ore Sand. . Crushed Iron Ore is produced by sifting Sand in a Sieve.