I don't think so, as far as I can tell, the mod is going to be for 1.15.2 (source is Direwolf20's Forgecraft series on twitch) but doesn't have any smeltery blocks implemented yet...
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Me with the slimesling and slime boots when I fling myself: YEEEEEEEEEEEEHAAAAAAAAAAAAAAAAAAW!
(Edit: Seriously, it's so fun that it's a crime!)
I've been waiting. Love the mod.