Both Salt from Mekanism and Sodium Chloride from Quantum Minecraft Dynamics, when put in the Melting Crucible from Immersive Technology, produce Molten Salt from Immersive Technology, which doesn’t have any uses in this modpack, instead of Molten Sodium Chloride from Quantum Minecraft Dynamics, which does have uses.
Also, on a related note, I haven’t tested this part, but in HEI, it looks like the Solar Tower’s recipe related to Molten Sodium might be backwards? (As in, the input and output are reversed)