【摘要】 选用纯度为99.996%的纯铜试样，采用水平区熔法在透明石英精炼室中的高纯石墨舟中对其精炼15次。结果表明:纯铜试样中间位置处金属杂质Zn、Ti、As、Cr、Ca的含量均小于0.2 g/t。非金属杂质Cl、N分别仅有不到0.1 g/t和1 g/t。更多还原

【Abstract】 A pure copper sample with 99.996% purity was selected to be refined 15 times by using of horizontal zone melting method in a high-purity graphite boat in a transparent quartz refining chamber. Results show that: the contents of metal impurities Zn, Ti,As, Cr and Ca are all less than 0.2 g/t at the intermediate position of the pure copper sample. The content of non-metallic impurities Cl,N is less than 0.1 g/t and 1g/t.更多还原