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青海某高硅复杂金矿石中金银含量测定方法研究
引用本文:王景凤,张瑾,董哲飞.青海某高硅复杂金矿石中金银含量测定方法研究[J].有色金属科学与工程,2018,9(6):89-93.
作者姓名:王景凤  张瑾  董哲飞
作者单位:1.西部矿业集团科技发展有限公司,西宁 810006
基金项目:青海省企业研究转化与产业化专项资助2016-GX-C9
摘    要:金矿石中金银的测定目前没有标准方法,一般借鉴金精矿中金的经典测定方法GB/T 7739.1-2007,在用该方法测定含有较高二氧化硅的金矿石样品时,在火法熔融过程中熔液容易溢出坩埚,导致试验失败;同时由于样品中含有较微量的银,形成的金银合粒中,银量和金量的比例相差甚大,给分金环节带来极大困难,金银合粒甚至无法有效分离.基于此,响应国家节能、减排、降耗的号召,根据该类样品的性质,通过试验进行了研究,通过不断改变固体熔剂的用量,优化并建立一次造渣铅扣适宜的试验条件,同时通过补加纯银,弥补样品中银量与金量的比例缺陷.在优化的工作条件下经过验证,分析结果准确、快速,减少了反复造渣引起的环境污染,减小了劳动强度和难度,检测成本大幅降低,现已用于大批高硅复杂金矿石中金银含量的测定,并取得了很好的效果.该方法适用于金矿石中含金量为100~600 g/t与含银量为30~100 g/t的测定. 

关 键 词:金矿石            测定方法  
收稿时间:2018-07-03

Determination method of gold and silver content in a high silicon complex gold ore in Qinghai
Affiliation:1.Technology Development of Western Mining Group Co., Ltd., Xining 810006, China2.The Engineering and Technology Research of Qinghai Western Mining Co., Ltd., Xining 810006, China3.Qinghai Key Laboratory Plateau Comprehensive Utilization and Mineral Processing Engineering, Xining 810006, China4.Arura, Tibetan Medicine Co., Ltd., Xining 810000, China
Abstract:There is no standard method for the determination of gold and silver in gold ore. Generally, it is based on the classical determination method of gold in gold concentrate, GB/T 7739.1-2007. When this method is used to determine gold ore samples containing higher silica, it is melted in fire. During the process, the melt easily overflows and causes the test to fail. At the same time, because the sample contains a small amount of silver, the ratio of the amount of silver to the amount of gold in the formed gold-silver granules is very different, which brings great difficulty to the gold-splitting process. It is not even effective to separate. Based on this, in response to the national call for energy conservation, emission reduction and consumption reduction, according to the nature of the samples, the research was carried out through experiments, and the suitable test conditions for the slag lead buckle were optimized and established by continuously changing the amount of solid flux. By adding sterling silver, it compensates for the proportion of silver and gold in the sample. It has been verified under optimized working conditions, the analysis results are accurate and fast, the environmental pollution caused by repeated slag reduction is reduced, the labor intensity and difficulty are reduced, the detection cost is greatly reduced, and it has been used in a large number of high-silicon complex gold ore gold. The silver content was measured and achieved good results. The method is applicable to the determination of gold content in gold ore: 100~600 g/t, and silver amount: 30~100 g/t. 
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