A black mineral is an ore of niobium and tantalum.
一种黑色矿物是铌、钽矿石。
The leaching mechanism of niobium from a refractory niobium-tantalum ore by concentrated potassium hydroxide was studied.
实验研究了难分解铌钽矿在高浓度氢氧化钾溶液中浸出过程的机理。
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-niobium ore.
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。
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