I did fix the Issue by making the Mixer Recipe for AlF3 output Liquid instead of Dust, so that you wont need to smelt it extra anymore.
For Tantalum related things I still need to figure out a nice way to fit into the Tech Tree. ^^
This Version should probably be working for you. ^^
(note 1: The scary sounding Description is only there to make sure people don’t use that Version lightly.)
(note 2: if you use this Version more often, make sure your Browser didn’t cache the Download)