阐述了生产钨酸钙过程中除钼的原理，并提出了具体的操作工艺。
Principle of removing molybdenum from producing calcium tungstate process is set forth, concrete operation technology is presented.
本文选用了焦（?）酚作释放剂，在空气—乙炔火焰中直接测定钨酸中的微量钙。
This paper describes the atomic absorption method in which the pyrogallol is used as releasing agent to assay directly the trace amount of calcium in calcium tungstate in air-acetylene flame.
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.
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.
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