ZCCM-IH launched action in Oct 2016 to sue First Quantum over claims that the company borrowed $2.3bn from copper mining subsidiary without informing them.
DRC's proposed mining code, which industry has warned will stifle investment in the copper and cobalt-rich nation, sailed through Senate without opposition.
Receiving the necessary licences would allow the company to continue operating in the state of Minas Gerais, where the iron ore mine is located, for at least another 15 years.