Determination method of gold and silver content in a high silicon complex gold ore in Qinghai

There is no standard method for the determination of gold and silver in gold ore. Generally, it is based on the classical determination method of gold in gold concentrate, GB/T 7739.1-2007. When this method is used to determine gold ore samples containing higher silica, it is melted in fire. During the process, the melt easily overflows and causes the test to fail. At the same time, because the sample contains a small amount of silver, the ratio of the amount of silver to the amount of gold in the formed gold-silver granules is very different, which brings great difficulty to the gold-splitting process. It is not even effective to separate. Based on this, in response to the national call for energy conservation, emission reduction and consumption reduction, according to the nature of the samples, the research was carried out through experiments, and the suitable test conditions for the slag lead buckle were optimized and established by continuously changing the amount of solid flux. By adding sterling silver, it compensates for the proportion of silver and gold in the sample. It has been verified under optimized working conditions, the analysis results are accurate and fast, the environmental pollution caused by repeated slag reduction is reduced, the labor intensity and difficulty are reduced, the detection cost is greatly reduced, and it has been used in a large number of high-silicon complex gold ore gold. The silver content was measured and achieved good results. The method is applicable to the determination of gold content in gold ore: 100~600 g/t, and silver amount: 30~100 g/t.