crushing screening sizing agglomeration of iron ore

Jan 11 2013 1 Ore Crushing Ore comes from mines in lumps up to 1 m across The lumps are reduced in size in several stages Primary crushing Here they break down to 100200 mm Secondary crushing Here they break down to10 50 mm Fine crushing Here they break down to to 2 20 mm or and finally Grinding if necessary down to 005 mm 2 Sizing Every size of crushing