A group of Chinese firms have jointly established a rare earths innovation centre in the country's Hebei province as part of a plan to develop a manufacturing base in the region.
The Malaysian environment ministry has said it wants to discuss ways to manage the low-level radioactive residue produced by Lynas at its rare earth processing plant.
The AMV3 has the capacity to add 500,000 carats of annual production from 2022, and is expected to contribute 2 billion Namibian dollars a year in taxes and royalties to the Namibian treasury.
The Tenke Fungurume mine is one of the largest in Democratic Republic of Congo, which is Africa's leading copper producer and the world's top miner of cobalt.
It now expects to produce between 320 and 330 million tonnes of the steel making ingredient in 2019, down from a previous guidance of 333 to 343 million tonnes.
Wet processing at Brucutu was suspended in early February at the request of local prosecutors following the tailings dam disaster at Brumadinho, which left 243 dead.