火试金法测定银量校正——全流程回收率法  

Silver content calibration in fire assay determination—whole process recovery rate method

作　　者：赵可迪 芦新根 赵凯 阚春海 肖千鹏 Zhao Kedi;Lu Xingen;Zhao Kai;Kan Chunhai;Xiao Qianpeng(Changchun Gold Research Institute Co.,Ltd.;National Quality Inspection and Testing Center for Gold and Silver Products(Changchun))

机构地区：[1]长春黄金研究院有限公司,130012 [2]国家金银及制品质量检验检测中心(长春)

出　　处：《黄金》2022年第6期86-90,共5页Gold

摘　　要：火试金法测定银量过程中会有少量银损失,研究通过纯银在熔融和灰吹过程中的损失值来确定火试金法中银量的校正系数,即纯银回收率,对银量测定结果进行校正。实验分别考察了金银质量比、杂质元素、纯银灰吹损失等条件,排除了可能影响测定结果的因素。为验证方法的适用性,采用3种不同性质样品进行方法的精密度和准确度实验。结果表明,经本方法校正后,可以获得准确可靠的检测结果。A small amount of silver will be lost when fire assay is used to determine silver content.The study determines the calibration coefficient of silver content and the recovery rate of pure silver in fire assay referring to the loss of pure silver in fusion and cupellation, so that the silver content determination results are calibrated.The experiments investigated mass ratio of gold and silver, impurity elements, cupellation loss of pure silver respectively, and ruled out factors possibly affecting determination results.3 samples with different properties were tested in terms of their precision and accuracy to verify the applicability of the method.The results show that calibrated by the method, accurate and reasonable determination results can be obtained.

关 键 词：火试金 银量 银校正 全流程回收率法 金银质量比 杂质元素 适用性 

分 类 号：TD926.3[矿业工程—选矿]