杂质元素对火试金重量法测定粗金中银量的影响  

Influence of impurity elements on silver analysis in coarse gold by fire assay gravimetric method

作　　者：苏本臣 张广盛 李正旭 钟英楠 杜兆欣 肖千鹏 Su Benchen;Zhang Guangsheng;Li Zhengxu;Zhong Yingnan;Du Zhaoxin;Xiao Qianpeng(Changchun Gold Research Institute Co.,Ltd.;National Quality Supervision and Inspection Center for Gold and Silver Products(Changchun;Jiangxi Sanhe Gold Industry Co.,Ltd.)

机构地区：[1]长春黄金研究院有限公司测试中心,130012 [2]长春黄金研究院有限公司 [3]国家金银及制品质量监督检验中心(长春) [4]江西三和金业有限公司

出　　处：《黄金》2020年第5期90-92,共3页Gold

摘　　要：实验考察了粗金中含有的10种杂质元素对火试金重量法测定银量的影响。结果表明:试料中的铜、铁、镍、锌、铂、钯、硒、碲、锑、铋质量分数分别不高于20%、10%、5%、5%、0.2%、0.5%、5%、2%、2%、2%时,该方法测定结果的准确度和精密度符合要求;杂质元素含量超过上限量值时,可通过减少称样量及增加铅箔用量等措施提高方法的适用性。该研究为黄金冶炼企业粗金产品的质量控制、贸易计价等提供技术参考。The test investigates the influence of 10 impurity elements contained in the coarse gold on the silver analysis in coarse gold by fire assay gravimetric method.The results show that when the Cu,Fe,Ni,Zn,Pt,Pd,Se,Te,Sb,Bi mass fractions in the test samples are not higher than 20%,10%,5%,5%,0.2%,0.5%,5%,2%,2%,2%,the accuracy and precision of the analysis results of the method meet the requirement;when impurity element content exceeds the limit value,the applicability of the method can be improved by reducing sample weight and increasing lead foil dosage.The research can be used as technical reference for gold smelting enterprises to do quality control of coarse gold products and trade valuation.

关 键 词：粗金 火试金法 杂质 银 金银合粒 增量 

分 类 号：TD926.3[矿业工程—选矿]