Vale reiterates that the 2024 copper production guidance remains at 320-355 kt.
Copper prices have retreated from a record hit in May on concerns about the strength of demand in China.
The miner said higher metal prices boosted its earnings, while lower treatment charges and metal premiums weighed on the result.
The country, home to Rio Tinto's Jadar project, inked a series of deals granting EU members exclusive access to Serbian lithium.