The development of sulfide-based chemistry and physical separation in the last decade opens new processes to produce metals at the industrial scale. Herein, a new route to produce metallic tungsten and tungsten carbides particles from natural wolframite (Fe,Mn)WO₄ and scheelite CaWO₄ is presented. Sulfidation of mineral concentrates breaks the tungstate crystal structure into a mix of sulfides, in particular tungsten disulfide WS₂. The thermal instability of WS₂ at high temperature allows for its subsequent, selective, thermal reduction to tungsten particles at around 1500 °C. Similar thermal reduction in the presence of carbon result in the production of tungsten carbides, WC and W₂C, obtained at around 1250 °C. The other major components of the sulfidized concentrate remain un-reduced under the proposed conditions, demonstrating selective reduction of WS₂ as a possible new route for W recovery. Similar findings are reported for the carburization of WS₂.

过去十年中硫化物化学和物理分离的发展开辟了工业规模生产金属的新工艺。本文提出了一种从天然黑钨矿(Fe,Mn)WO ₄和白钨矿CaWO ₄生产金属钨和碳化钨颗粒的新路线。精矿的硫化将钨酸盐晶体结构破坏成硫化物的混合物，特别是二硫化钨WS ₂。_{WS 2}在高温下的热不稳定性允许其随后在 1500 °C 左右选择性热还原为钨颗粒。_{碳存在下的类似热还原导致碳化钨、WC 和 W 2}的产生C，在 1250 °C 左右获得。在所提出的条件下，硫化精矿的其他主要成分仍未被还原，这表明选择性还原 WS ₂作为 W 回收的可能新途径。_{WS 2}的渗碳也有类似的发现。