Learn French: Qui d'entre vous réclame ces lingots ? - Who among you demands these ingots?

Both can translate to "among you," but d'entre is used specifically as a partitive to extract or single out members from a distinct group. After interrogative words like qui (who), lequel (which one), or combien (how many), French uses d'entre followed by a stressed pronoun (like nous, vous, or eux).

Since the sentence has vous, shouldn't the verb be réclamez instead of réclame?

It is a common trap! The subject of the verb is actually the question word qui (who), not vous. Just like in English, qui as a subject always takes the third-person singular form of the verb (the il/elle form). The phrase d'entre vous is just extra information modifying the "who."

Could I just say qui de vous instead of qui d'entre vous?

Yes, qui de vous is grammatically correct and means the same thing. However, qui d'entre vous is much more common and natural in modern French. Adding entre helps to strongly emphasize the idea of choosing "from among" a specific group.

What is the difference between using réclamer here rather than demander?