B. Koomson, S. Fosu, B. A. Brako, E. K. Asiam, E. Yanful
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引用次数: 0
摘要
这项工作旨在评估储存的硫化金矿石未经处理四(4)年的酸性矿山排水(AMD)潜力。采用x射线衍射仪(XRD)和反射光显微镜对堆存的硫化金矿进行了矿物组成分析。采用ASTMD 5744湿池(Acid Base Accounting, ABA)和湿池(moisture Cell, ASTMD 5744)对矿石样品进行了AMD电位和动力学研究。XRD和显微镜分析表明，该金矿主要含砷黄铁矿和黄铁矿。ABA确认，如果矿石长期未经处理，就AMD的安全边际而言，硫化金矿石可能是AMD的潜在来源。湿电池动力学分析表明，废弃硫化物原矿在长时间氧化过程中，有可能将砷转移到地质环境中。
ASSESSING THE ACID MINE DRAINAGE POTENTIAL OF A STOCKPILED GOLD BEARING SULPHIDE ORE
This work seeks to assess the acid mine drainage (AMD) potential of stockpiled sulphidic gold bearing ore that was left untreated for a period of four (4) years. The mineralogical composition of the stockpiled sulphidic gold ore was determined using X-Ray Diffractometry (XRD) and Reflected Light Microscope. The AMD potential and kinetic studies on the ore sample were determined using Acid Base Accounting (ABA) and Humidity Cell (ASTMD 5744). The XRD and microscope analyses showed that the gold ore contain arsenopyrite and pyrite as the major sulphide minerals. The ABA confirmed that the gold sulphide ore could be a potential source of AMD with respect to AMD marginal of safety if the ore is left untreated for a very long period. Humidity Cell kinetic analysis showed a possibility of mobilizing Arsenic (As) into the geo-environment when there is a long period of oxidation of abandoned sulphide run-of-mine (ROM) ore.
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