钨属于稀有元素，包括钨铁精矿和钨酸钙精矿两种，在地壳中含量仅为0.8%，我国钨储量约占世界总储量的55%，居首位。
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从1949年至今赣州累计生产钨精矿近120万吨，约占全国同期总产量的49%。
Ganzhou has supplied about 1.2 million tons of tungsten concentrate since 1949, which is 49% of the total output in China.
采用硫磷混酸分解试样测定钨精矿中钙的含量。
Determine the content of calcium with the mixed acidic thionation decomposition sample in the tungsten concentrates mineral.
本文论述采用亚硫酸盐作抑制剂，对黑钨粗精矿精选枱浮钼、铜、铋硫化矿浮选分离的研究。
The flotation separation of molybdemun, copper and bismuth sulfides minerals, which are obtained by table flotation of wolframite primary concentrates, is studied using sulphites as depressants.
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