Jan 6 (Reuters) - The Baltic Exchange"s dry bulk sea freight index (.BADI) edged higher on Thursday, buoyed by an uptick in capesize and panamax vessel rates. * The overall index, which factors in rates for capesize, panamax and supramax vessels, gained 7 points to 2,296. * The capesize index (.BACI) rose 55 points, or 2.4%, to 2,356. * Average daily earnings for capesizes, which transport 150,000-tonne cargoes such as iron ore and coal, rose by $451 to $19,535. * Iron ore futures rose on Thursday, on expectations of a recovery in Chinese demand for the steelmaking raw material and steel products after the Beijing 2022 Olympics next month. * The panamax index (.BPNI) edged 10 points higher to 3,013. * Average daily earnings for panamaxes, which ferry 60,000-70,000 tonne coal or grain cargoes, rose by $94 to $27,117. * "This week started with uncertainty for the Indonesian coal export after the government put a ban during the weekend," shipbroker Fearnleys said in a weekly note dated Wednesday. * "Though most of the drama has calmed down, both charterers and owners for this trade have avoided new business before the situation is clearer." * Major Indonesian coal miners have sought exemptions from a coal export ban put in place at the start of the year as the costs of having scores of ships stranded offshore continue to mount. read more * The supramax index (.BSIS) slipped 41 points to its lowest level since April 2021 at 2,124.