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Gold Science and Technology >

2020 , Vol. 28 >Issue 2: 278 - 284

DOI: https://doi.org/10.11872/j.issn.1005-2518.2020.02.094

Mining Technology and Mine Management

Mineralogical Characterization of a Gold Ore in Sagaw Province，Myanmar

  • Kaibin FU , 1, 2 ,
  • Weiqing WANG 1, 2 ,
  • Taotao ZHAO 3 ,
  • Meiqiao LONG 1, 2 ,
  • Puyao HOU 1, 2 ,
  • Mingxia DU 1, 2
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  • 1. Key Laboratory of Solid Waste Treatment and Resource Recycle，Ministry of Education，Mianyang 621010，Sichuan，China
  • 2. School of Environment and Resource，Southwest University of Science and Technology，Mianyang 621010，Sichuan，China
  • 3. Sichuan Hailan Qingtian Environmental Protection Technology Co. , Ltd，Chengdu 610045，Sichuan，China

Received date: 2019-06-20

  Revised date: 2019-11-24

  Online published: 2020-05-07

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Highlights

As trade friction between China and the United States escalates，international concerns about the creditworthiness of the United States will have a negative impact on the status of the dollar as a national currency，countries may increase their holdings of gold and demand for gold will increase.Myanmar is one of the most promising countries for China’s direct mining investment.The gold resources in Burma are abundant and widely distributed.At present，there are few reports on the development and utilization of gold mines in Myanmar.It is of great significance to strengthen basic research on overseas mineral resources and avoid technical risks.Mineral development investment risk is bigger due to lack of basic materials of process mineralogy of a gold mine in sagaing province，Myanmar.The chemical composition，mineral composition，particle size distribution，physical phase and dissociation degree of gold and structure of ore were studied by means of X-ray diffraction （XRD），scanning electron microscope （SEM） and chemical analysis to find out the process mineralogy characteristics of a gold mine in Sagaw Province，Myanmar.The results show that the grade of gold is 5.13×10-6，which is the main valuable element.The ore has autogenous grain structure，block structure，patchy structure and disseminated structure.The mineral composition of the ore is simple，the metal minerals are mainly pyrite （14.75%），a small amount of chalcopyrite，magnetite and porphyry，and the gangue minerals are mainly quartz，plagioclase，calcite，chlorite and white mica.The distribution rate of gold in heavy minerals is 3.94%.Free gold is hornlike，massive，flaky and circular, the fineness of gold is good （more than 93%）.Gold is easy to dissociate.Most of the gold in the non-heavy minerals has been dissociated，the distribution rate of free gold is 92.68%.The distribution rate of gold parcel is 3.38%.The monomer dissociation degree of fine-grained gold is also relatively high.In the -0.074 mm grain size，The monomer gold content is 98.72%，the adherent-gold content is 1.28%.After 60 h of full-mud cyanidation，the gold leaching rate reached 90.19%，which was close to the rule of gold monomer dissociation degree in the gold mine.It is necessary to continue to strengthen the research on the theory and technology of selecting and metallurgy of a gold mine in shijie province and improve its technical and economic indexes.

Cite this article

Kaibin FU , Weiqing WANG , Taotao ZHAO , Meiqiao LONG , Puyao HOU , Mingxia DU . Mineralogical Characterization of a Gold Ore in Sagaw Province，Myanmar[J]. Gold Science and Technology, 2020 , 28(2) : 278 -284 . DOI: 10.11872/j.issn.1005-2518.2020.02.094

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