A new process called ore blending-KOH molten salt decomposition-water leaching was first put forward for the processing of a low-grade refractory tantalum-niobiumore.
首次提出采用“配矿- koh熔盐分解-水浸出”的新工艺来处理低品位、难分解钽铌矿。
2
A black mineral that is an ore of niobium and '.
一种黑色矿物，是铌、钽矿石。
3
A black mineral is an ore of niobium and tantalum.