Methods for chemical analysis of high impurity tungsten mineral—Determination of tungsten trioxide content—Twice separation and igniting gravimetric method
全国有色金属标准化技术委员会(SAC/TC 23)
本标准规定了高杂质钨矿中三氧化钨量的测定。
本标准适用于磷含量小于2%、钛含量小于1%、锡含量小于2%的钨矿中三氧化钨量的测定。三氧化钨测定范围：20%以上。
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