The ammonium tungstate igniting gravimetric method for the determination of tungsten trioxide content 钨酸铵灼烧法测定三氧化钨量
Method for the determination of tungsten trioxide content in ammonium paratungstate for import export 进出口仲钨酸铵中三氧化钨含量的测定
Methods for chemical analysis of tungsten concentrates - the ammonium tungstate igniting gravimetric method for the determination of tungsten trioxide content 钨精矿化学分析方法钨酸铵灼烧法测定三氧化钨量
In 1958 , ganzhou concentration plant was established and started its production . after 1963 , tungstic acid , apt , w powder , wc powder and cemented carbide could be produced too 1958年,赣州精选厂建成投产。 1963年以后,进一步发展到生产钨酸、钨酸钠、仲钨酸铵、钨粉、碳化钨粉、硬质合金等。
Then “ umbrella ” brand apt produced by ganzhou 801 factory was sold to japan , us , uk and france . but the output of the tungsten products was still less than 2 , 000 tons 随后赣州八0一厂生产出“伞牌”仲钨酸铵产品远销日、美、英、法等国。这一期间赣州钨冶炼产品产量很小,年总产量不到2000吨。