摘要
近年来,我国金矿资源不断减少,矿石逐渐趋向于“贫、细、杂”。随着现代选矿技术的发展,加强对低品位伴生金资源的有效开采和利用,已经引起业界重视。目前,选矿行业在这方面也做了大量研究,使低品位伴生金的回收利用取得了很大的进步。通过对矿石矿物结构性质的了解,建立了矿物中低品位伴生金含量金的火焰原子吸收光谱测定方法。对原子吸收光谱仪的性能、金的富集与解脱进行相关实验,同时考虑了干扰因素及消除干扰方式。经2个国家标准物质验证,并抽取当地6个代表性样品分析结果精密度和准确度进行考察,相对标准偏差RSD(n=11)均小于8.5%,样品加标回收率在95.2%~109%,达到了对金含量的检测目的。
In recent years,China’s gold resources are dwinding,ore gradually tends to be“poor,fine and miscellaneous”.With the development of modern mineral processing technology,strengthening the effective exploitation and utilization of low grade associated gold resources is gradually attracted in the mining industry.At present,the mineral processing industry has done a lot of research in this area,so that the recovery and utilization of low-grade associated gold has made great progress.Based on the understanding of the structure and properties of ore minerals,a flame atomic absorption spectrometric method for the determination of low-grade associated gold in minerals was established.The performance of atomic absorption spectrometer,the enrichment and desorption of gold were tested,and the interference factors and elimination methods were considered..Certified by two national standard substances,the precision and accuracy of the analysis results of 6 representative samples were investigated.RSD(n=11)are less than 8.5%,recovery of spiked sample is 95.2%—109%,achieving the detection of gold content.
作者
李杰阳
LI Jieyang(Kafang Branch of Yunnan Tin Co.,Ltd.,Gejiu,Yunnan 661000,China)
出处
《中国无机分析化学》
CAS
北大核心
2021年第3期60-65,共6页
Chinese Journal of Inorganic Analytical Chemistry
关键词
低品位伴生金
火焰原子吸收光谱法
泡沫塑料富集
low-grade associated gold
flame atomic absorption spectrometry
enrichment of foam plastics
