火试金法测定铜硫矿中的金和银量的研究

本文针对铜硫矿中铜含量较高的特性,建立了适合该试样的配料比、高温熔融,金、银与铅形成合金,利用其比重悬殊与熔渣分离,将铅扣灰吹得金、银合粒,用硝酸分金,用重量法测定金量,用容量法测定银量。方法的相对标准偏差0.66%到4.78%,加标回收率96.5%到100.6%。

Table 2: lead oxide dosage choice experiment (8# like) (n=5)

high copper content in the copper sulfide ore, in the light of these characteristics is proposed in this paper is suitable for the sample mixture ratio, high temperature melting, gold, silver and lead to the formation of alloy, using the proportion of the poor separation and slag, will lead button ash blowing gold, silver grains with nitric acid, the determination of gold in gold, determination of silver content with gravimetric method, volumetric method. Relative standard deviation of the method is 0.66% to 4.78%, the recovery rate of 96.5% to 100.6%.