火试金重量法测定石英砂中金含量

Determination of Gold Content in Quartz Sand by Fire Assay Gravimetry

对采用火试金重量法对石英砂中金含量进行检测的实验条件进行了研究,重点对火试金熔融的配料方案、样品中银量对分金的影响、重量法和原子吸收法测定金量的误差来源等方面进行了考查。实验结果表明:该方法的精密度好,准确度高。该方法适用范围在1.0~10.0g/t之间。

The experimental conditions for the determination of gold content in quartz sand by fire assay gravimetric method are studied,and the batching scheme for the melting of fire gold test,the effect of silver content in the sample on gold separation,the error sources of gold content determination by gravimetric method and atomic absorption method are investigated.The experimental results show that the method has good precision and accuracy.The application range of this method is between 1.0g/t and 10.0g/t.