Ore can convertet into Mineral Liquid and than into another Ore. Works with Bob Ores.
You can use it with Angels Mod's but you can't convert Angel Ores into Iron Ore or Copper Ore and so on.
So you can't skip the crushing and sorting with Angels.

Ore into Mineral Liquid ( Chemical Plant )
Mineral Liquid into Ore ( Assembling Machine )
Coal into Oil Sludge ( Chemical Plant ) v. 1.0.1
Oil Sludge into Crude Oil ( Chemical Plant ) v. 1.0.1

Version without Liquid: https://mods.factorio.com/mod/Ore_Conversion