火试金法测定铜精矿中的金和银量

Determination of gold and silver content of copper concentrate by fire-assaying method

本文讨论了PbO的作用及用量,建立了排除试样中铜、镍、铋杂质所需要PbO量的函数关系,论述了清除高含量铋的特殊方法,说明了熔渣硅酸度和铅扣量的选择原则和方法。

In this paper, the effect and the quantity of PbO used were discussed.For removing the impurity such as copper, nickel and bismuth in samples, the function relationship between the quantity of impurity and that of PbO needed was established.The particular method to remove rich bismuth was given. The selection principle and method for silicic acidity in melten slay and the quantity of lead button were explained.