Mr. Batolo, who will officially take office on January 1, 2019, will become the second Gabonese national to hold the position after Marcel Abeke.
He replaces Frenchman Herve Montaigu, who will take up other roles within the ERAMET group.
COMILOG is entering a new phase of its growth with the prospect of the COMILOG 2020 project, which aims to increase by over 30 percent the company's ore production.
The investment decision is expected in the first half of 2019, the company said.
COMILOG, which has been mining Moanda manganese ore since 1962, is 63.7percent owned by ERAMET.
Gabon owns the remaining 28.9 percent.