低含量金矿石检测方法研究

Study on Detection Method of Low Content Gold Ore

采用活性炭吸附-甲基异丁基甲酮(MIBK)二次萃取富集的方法对金品位0.05~0.10 g/t的低含量金矿石进行了分析试验,结果表明,该方法精密度良好,方法检出限小于0.03 g/t;该方法检测标样,结果和推荐值吻合较好;具有操作简便、测定仪器成本低、选择性高、稳定性好等优点,适用于低含量金矿石的检测分析。

In this paper,activated carbon adsorption-methyl isobutylketone(MIBK)secondary extraction enrichment method was used to analyze the low-content gold ore with gold grade of 0.05-0.10g/t.It was found that the precision of the method was 4.2%-7.8%,the accuracy was 2.0%-7.0%,and the detection limit was less than 0.03 g/t.The result of this method is in good agreement with the recommended value,and it has the advantages of simple operation,low cost,high selectivity,good stability,less interference elements and high accuracy.It is suitable for the detection and analysis of low content gold ore.