A mineral processing test was conducted to treat a lithium-tantalum-niobium-beryllium polymetallic ore with a lithium grade of 0.68% from Xinjiang. According to the process mineralogy study, this ore has spodumene as the dominant lithium minerals, and has low content of tantalum-niobium minerals. A flowsheet including a magnetic separation and gravity separation to recover tantalum-niobium minerals, and a flotation to collect lithium minerals can produce a tantalum-niobium concentrate with Ta₂O₅ grade and recovery of 17.110% and 41.69%, Nb₂O₅ grade and recovery of 19.670% and 42.63%, respectively, and a lithium concentrate with Li₂O grade and recovery of 5.12% and 75.21%, respectively.

spodumene  /  tantalum-niobium ore  /  aquamarine  /  magnetic separation  /  gravity separation  /  flotation  /  combined beneficiation process  /  lithium  /  tantalum  /  niobium  /  beryllium