Iron Dust
Comes from the thermal centrifuge or from grinding iron in the macerator. A furnace turns it back into an ingot.
How to make it
in 
Macerator
Macerator
in 
Thermal Centrifuge (heat 1600)
Thermal Centrifuge (heat 1600)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 4000)
Thermal Centrifuge (heat 4000)
in Thermal Centrifuge (heat 1600)
Thermal Centrifuge (heat 1600)