德兴铜矿堆浸场矿石矿物学、Cu伴生元素地球化学特征及意义

发布时间：2018-03-13 00:32

本文选题：德兴铜矿　切入点：堆浸场　出处：《岩石矿物学杂志》2017年06期 　论文类型：期刊论文

【摘要】：德兴铜矿是我国乃至世界著名的低品位多金属岩型铜矿之一。多年来,德兴铜矿在低品位矿石堆浸过程中只对Cu元素进行回收,而对Re、Co、Au、Ag等伴生元素研究甚少。本文采用X射线衍射、扫描电镜与电镜能谱、电子探针以及ICP-MS等方法对德兴铜矿杨桃坞与祝家村堆浸场低品位矿石进行测试分析,研究了低品位矿石矿物组成变化、重要共伴生元素的赋存状态与空间分布规律,并对其进行了综合利用的可行性评价。研究结果表明,Au主要以自然金形式存在,Ag以单质和化合物两种形式存在,Co主要以类质同像形式存在;Re与Mo含量很低,无利用价值;Co元素含量相对较高,均值19 g/t左右,浸出率为73%,因此回收酸性水库中的Co元素可能具有重大经济价值;杨桃坞堆浸场Au平均含量0.10 g/t,几乎无浸出;Ag平均含量0.39 g/t,浸出率较低,可作为一种潜在资源。此外,堆浸场中金红石含量较丰富,平均粒度20μm左右,估算储量达460万吨,有必要对其回收性开展深入研究。
[Abstract]:Dexing Copper Mine is one of the most famous low grade polymetallic ore deposits in China and the world. For many years, Dexing Copper Mine has only recovered Cu elements in the process of heap leaching of low grade ores. In this paper, X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron microscopy (SEM), electron microprobe (EPMA) and ICP-MS were used to test and analyze the low grade ore in the heap leaching field of Jiandawu and Zhujiacun in Dexing Copper Mine. The variation of mineral composition, the occurrence and spatial distribution of important co-associated elements in low-grade ores are studied. The feasibility evaluation of its comprehensive utilization was carried out. The results showed that the content of re and Mo was very low in the form of natural gold, and the content of Co and Co in the form of simple substance and compound was very low, and the content of re and Mo was very low in the form of metamorphic isomorphism. The content of Co is relatively high, the average value is about 19 g / t, and the leaching rate is 73%, so the recovery of Co from acid reservoir may be of great economic value. The average content of au is 0.10 g / t, the average content of Ag is 0.39 g / t and the leaching rate is low, which can be used as a potential resource. In addition, the content of rutile is abundant, the average grain size is about 20 渭 m, and the estimated reserves are 4.6 million tons. It is necessary to carry out an in-depth study on its recovery.
【作者单位】：中国地质科学院矿产资源研究所国土资源部成矿作用与矿产资源评价重点实验室;中国地质调查局天津地质调查中心;中国地质大学(北京);
【基金】：国土资源部公益性行业科研专项(201311072-01,200911007-01)~~
【分类号】：P618.41

【相似文献】