火试金法测定精炼金的金含量  

Determination of gold in refined gold by fire assaying method

作　　者：王世辉[1] 叶雪均[1] 胡敏[2] 

机构地区：[1]江西理工大学资源与环境学院,江西赣州341000 [2]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《冶金分析》2008年第1期71-73,共3页Metallurgical Analysis

摘　　要：介绍了用火试金法测定精炼金（99．509／5～99．99％，w％）中金的含量。讨论了称样量，银、铅的加入量，灰吹温度，碾片厚度及长宽，分金温度，分金时间等因素的影响。对英国伦敦黄金白银市场协会（LBMA）的样品进行分析，相对标准偏差小于0．00319／6，极差小于0．0119／5，测定值与认证值相符。The determination of gold content in refined gold （99. 50%-99. 99%,w%） in the fire assaying method was introduced. The effects of sample quantity, addition of silver and lead, cupellation temperature, thickness and length of grind piece, temperature and time for cupellation were investigated. Samples from London Bullion Market Association （LBMA） were analysed. RSD of the results was less than 0.003 1 %, and the range were less than 0. 011%. The results were in accordance with certified value.

关 键 词：火试金法 精炼金 金含量 

分 类 号：TG115[金属学及工艺—物理冶金]