Rock type coltan ore processing, the flowchart can be as below:Feeding-crushing-grinding-primary separation - final concentration- upgradingThe feeding, primary separation, final concentration and upgrading process are almost the same as above alluvial coltan process.

Crushers has choice of rough jaw crusher, fine jaw crusher, cone crusher, hammer crusher, roller crusher, depends on the rock feeding size and process capacity to use which kind crusher.

After crush the coltan stone to smaller size, need to grind to power by vertical ultrafine mill or wet pan mill or other grinding machine, so the coltan can released out from stone.Then go to next coltan separation machine and concentration machine.