黄金尾矿材料及环境属性研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (10): 3457-3463.

黄金尾矿材料及环境属性研究

朱建平, 乐红志, 朱俊阁, 白荣, 李洪达

山东理工大学材料科学与工程学院,淄博 255000

收稿日期:2021-04-10 修回日期:2021-05-04 出版日期:2021-10-15 发布日期:2021-11-11
通讯作者: 乐红志,博士,副教授。E-mail:yhz@sdut.edu.cn
作者简介:朱建平(1995—),男,硕士研究生。主要从事生态环境材料研究。E-mail:930214580@qq.com
基金资助:
淄博市校城融合计划项目(2018ZBXC002);山东省重大科技创新工程项目(2018CXGC1011)

Research on Material and Environmental Properties of Gold Tailings

ZHU Jianping, YUE Hongzhi, ZHU Junge, BAI Rong, LI Hongda

School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China

Received:2021-04-10 Revised:2021-05-04 Online:2021-10-15 Published:2021-11-11

摘要/Abstract

摘要： 黄金尾矿是金矿开采过程中常见的固体废弃物,大部分尾矿直接堆积在尾矿库中得不到回收利用,带来了一系列的社会和环境问题,对其进行资源化利用的研究愈发迫切。采用XRD、XRF、SEM、激光粒度仪、TG、DSC等测试手段对黄金尾矿的材料属性进行基础性研究,采用ICP、低本底多道γ能谱仪、pH值测定等测试方法进行环境属性研究。讨论了重金属溶出含量、放射性比活度和酸碱性,分析了黄金尾矿对环境的危害程度和二次利用可行性。研究结果表明:30 d重金属溶出含量小于地表水Ⅲ类水限值;放射性内外照射指数I_Ra=0.1、I_γ=0.4,均小于国家限制标准,为黄金尾矿在建筑行业领域的综合应用提供参考。

关键词: 黄金尾矿, 材料属性, 环境属性, 粒径分布, 重金属, 放射性, 二次利用

Abstract: Gold tailings are common solid wastes in the process of gold mining. Most of the tailings are directly accumulated in the tailing pond and cannot be recycled, which brings a series of social and environmental problems. The research of resource utilization is becoming more and more urgent. The material properties of gold tailings were investigated by XRD, XRF, SEM, laser particle sizer, TG and DSC. The environmental properties of gold tailings were studied by ICP, low background multi-channel gamma spectrometer and pH value determination. The leaching content, radioactivity specific activity and acid-base property of heavy metals were discussed, the environmental hazards by gold tailings and the feasibility of secondary utilization were analyzed. The results show that the 30 d heavy metal leaching content is less than the surface water class Ⅲ limit, and the index I_Ra=0.1 and I_γ=0.4 are all less than the national radioactive restriction standards, which provides a reference for the comprehensive application of gold tailings in the construction industry.

Key words: gold tailing, material property, environmental property, particle size distribution, heavy metal, radioactivity, secondary utilization

中图分类号:

X753

朱建平, 乐红志, 朱俊阁, 白荣, 李洪达. 黄金尾矿材料及环境属性研究[J]. 硅酸盐通报, 2021, 40(10): 3457-3463.

ZHU Jianping, YUE Hongzhi, ZHU Junge, BAI Rong, LI Hongda. Research on Material and Environmental Properties of Gold Tailings[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(10): 3457-3463.

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