复杂多金属铜硫矿物中金含量的测定  

Determination on Gold Content in Complex and Polymetallic Copper-sulfur Minerals

作　　者：李杰阳 LI Jie-yang(Kafang Branch Company,YunTin Co.,Ltd.,Gejiu,Yunnan 661000,China)

机构地区：[1]云南锡业股份有限公司卡房分公司,云南个旧661000

出　　处：《云南冶金》2022年第1期110-115,共6页Yunnan Metallurgy

摘　　要：针对砷锑复杂多金属铜硫矿物的性质及组分,在分析检测中,对样品预处理分析进行了探究,采用较大样重、两段氧化焙烧,在酒石酸和氟化钠作用下,用稀王水(1+1,V/V)溶解,在10%~20%(V/V)稀王水浓度介质中,用聚胺酯负载三正辛胺的泡沫塑料富集溶液中金量与其它组分(干扰)分离,沸水浴中用一定体积毫升数的硫脲解脱液进行解脱,测定矿物中金的含量。此分析方法测定范围(0.05~10.00)g/t,检出限0.02630μg/mL,代表性样品分析结果的准确度和精密度进行考察,相对标准偏差RSD(n=11)在2.10%~6.54%之间,加标回收率在96.1%~102.9%范围内。We did the inquiry of pre-treatment and analysis of sample according to performance and composition of arsenic-antimony complex polymetallic copper-sulfur minerals,we adopted large sample weight,two sectional oxidizing roasting,under the function of tartaric acid and sodium fluoride,we used dilute aqua regia(1+1,V/V)for dissolution,in media of 10%~20%(V/V)dilute aqua regia,we used polyurethane to load Tri-n-octylamine,and usedfoamed plastic to enriched gold content in enrichment solution,which can be separated(disturbed)from the other components,a certain volume milliliters'thiourea relief solution was added in boiling water bath for liberation and for determination of gold content in Minerals.The determination range of the analysis method is(0.05~10.00)g/t,the detection limit is 0.02630μg/mL,the accuracy degree and precision degree of analysis results of representative samples was investigated,the relative standard deviation RSE(n=11)is in the range of 2.10%~6.54%,the adding standard recovery rate is in the range of 96.1%~102.9%.

关 键 词：砷锑复杂多金属铜硫矿物 预处理分析 金含量 

分 类 号：TD451[矿业工程—矿山机电]