[an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive]
[an error occurred while processing this directive]

Gold Science and Technology >

2021 , Vol. 29 >Issue 6: 908 - 916

DOI: https://doi.org/10.11872/j.issn.1005-2518.2021.06.058

Mining Technology and Mine Management

Process Mineralogy of Quartz Vein Gold Ore in Bamian，Laos

  • Cailian GUO ,
  • Fangyin NIU ,
  • Binglong CHEN ,
  • Haijun WANG
Expand
  • Xi’an Northwest Geological Institute of Nonferrous Metals，Xi’an 710054，Shaanxi，China

Received date: 2020-03-11

  Revised date: 2021-01-07

  Online published: 2022-03-07

Fold

Highlights

The technological type of ore in Bamian，Laos is low sulfide and quartz vein gold ore among which the main recycled element is gold with the grade of 42×10-6.The process mineralogy of gold ore was researched by microscope identification，SEM observation，MLA analysis，EDS analysis and multi-element chemical analysis.In order to find out the occurrence state of gold and provide process mineralogy data support and theoretical basis for the subsequent process design of beneficiation.The results show that：（1）The precious metal mineral is natural gold，which is the main recovered element.The main non-metallic minerals are quartz and plagioclase，the main metallic minerals are pyrite and arsenopyrite，followed by sphalerite.（2）A total of 165 natural gold particles were found in the ore，and the gold minerals are mainly natural gold which average purity is 905.09‰.The shape of natural gold is complex，mainly for the horn-granular and long-granular.The grain size of natural gold is coarser，which included 79.84% of visible gold，and 20.16% of micro gold.（3）The occurrence types of gold included 52.67% of fissure gold，40.33% of intergranular gold and 7.00% inclusion gold.（4）The main gold bearing minerals are arsenopyrite，pyrite，sphalerite，quartz and tourmaline，which closely symbiosis.The occurrence state of gold shows that the main natural gold is fissure gold and intergranular gold，the total of which is 93.00%.Moreover，the granularity of fissure gold and intergranular gold is relatively coarse.Usually the gold in this ore is easy to liberate.The arsenic in gold concentrage will exceed the standard because of the arsenopyrite is the main gold bearing mineral and arsenic bearing mineral. Through the unite gravity-flotation separation process，the gold recovery can reach to 95.5% under the grinding fineness of -0.074 mm 75%.The results of this study have found out the occurrence state of gold，filled in the blank of process mineralogy of quartz vein type gold ore and provided the basis for the process design of beneficiation.

Cite this article

Cailian GUO , Fangyin NIU , Binglong CHEN , Haijun WANG . Process Mineralogy of Quartz Vein Gold Ore in Bamian，Laos[J]. Gold Science and Technology, 2021 , 29(6) : 908 -916 . DOI: 10.11872/j.issn.1005-2518.2021.06.058

[an error occurred while processing this directive]

中南大学攻克砷碱渣无害化处置难题

在湖南省冷水江市召开的锡矿山地区砷碱渣无害化处理技术改造项目竣工验收评审会上，来自国内多家单位的专家一致认为，由中南大学资源加工与生物工程学院胡岳华、孙伟教授科研团队研发的“砷碱渣高精度矿化分离及减污降碳资源化利用”成套技术达到国际领先水平，是目前砷碱渣污染难题的最优解。

冷水江市锡矿山被誉为“世界锑都”，2020年全球1/4的锑产自这片116 km2的土地。在锑的精炼过程中，要加入纯碱或片碱进行脱砷处理，由此产生了用传统火法、固化填埋等方式处置不了的狡猾“毒物”——砷碱渣。它的出现，使锡矿山地区生态环境日益恶化，同时还带来了巨大的安全隐患。此前，国内外都没有找到能从根本上“驯服”砷碱渣的方法。

为解决砷碱渣无害化处置这一世界性的技术难题，让锡矿山找回昔日绿水青山的底色，中南大学资源加工与生物工程学院胡岳华、孙伟教授团队积极开展产学研协同。该团队联合湖南黄金集团有限责任公司、冷水江锑都环保有限责任公司、湖南省环境保护科学研究院、赛恩斯环保股份有限公司等单位，经过长期科研攻关，开发出以“砷碱高精度矿化分离”为核心的砷碱渣高精度矿化分离及减污降碳资源化利用成套技术。新技术把废渣中的砷变成一种不溶性矿物、把碱制成产品，使得砷碱渣无害化、减量化和资源化成为现实。

在项目团队的共同努力下，历经数次迭代，新技术最终成熟并实现了工业化应用，在冷水江锑都环保责任有限公司建成全世界最大规模的砷碱渣无害化处理线，年处理能力达到2万吨。自项目投产以来，累计处理砷碱渣6 453.58 t，预计节约历史遗留砷碱渣处理成本20多亿元，能有效为“世界锑都”疗“毒”。按照目前的处理能力，锡矿山地区遗留的15万吨砷碱渣，有望在近几年完全处理。

http://www.goldsci.ac.cn/article/2021/1005-2518/1005-2518-2021-29-6-908.shtml

References

Publishing order | Descend order by publishing year | Descend order by cited within
Chen Xifeng， Ye Jinhua， Xiang Yunchuan， al et，2017.Geological characteristics and exploration potential of the important deposits in Southeast Asia［J］.Geological Bulletin of China，36（1）：50-65.

Ding Mizao， Niu Honglian，2010.Current situation and analysis of gold chemical phase analysis［J］.Inner Mongolia Petrochemical Industry，9（4）：19-20．

Gai Xiaoqian， Han Zhiwei，2019.Study on relation between alteration types and mineralization for Parben Gold Deposit，Laos［J］.Xinjiang Journal of Nonferrous Metals，42（3）：64-66．

Gao Yalong， Niu Yingjie， Liu Zhiyong， al et，2017.Distribution characteristics and metallogenic prospect of gold resources in Laos［J］.Modern Mining，33（5）：20-25．

Guo Linnan， Hou Lin， Liu Shusheng， al et，2019.Ore-fluid sources and genesis of Phapon gold deposit，Laos：Constraint from REE and C，O，S isotopic characteristics［J］.Mineral Deposits，38（2）：233-250.

Li Huikai， Zhang Xiangjun， Wang Jun，2011.A probe into the geology and genesis of Phapon Au Deposit in Luangprabang，Laos［J］.Yunnan Geology，30（3）：280-284．

Liu Chengyi，1995.Introduction to Process Mineralogy of Gold Deposits in Shandong Province［M］.Beijing：Metallurgical Industry Press．

Liu Yinglei，2017.Study on Metallogenic Geological Conditions and Prospecting Potential of Pakbeng Gold Mines in Oudomxay Province，Laos［D］.Changchun：Jilin University．

Lu Yingxiang， Liu Hongguang， Huang Jingning， al et，2009.Preliminary division of the metallogenetic belts in the Central South Peninsula of Southeast Asia and their regional ore-forming characteristics［J］.Geological Bulletin of China，28（2/3）：314-325．

Shi Meifeng， Lin Fangcheng， Liu Chaoji， al et，2013.Classification and metallogenesis of metallogenic belts in Southeast Asia and the nenghbouring southwestern part of China［J］.Sedimentary Geology and Tethyan Geology，33（2）：103-112．

Wang Feng， Guo Maosheng， Wang Kai， al et，2006.Preparation of certified reference materials for chemical phase analysis of gold ore samples［J］.Rock and Mineral Analysis，25（3）：263-269．

Wang Jieting， Liu Zheng， Han Zhiwei， al et，2017.Discussion on the genesis of breccia-type gold ore body of the Phabon gold deposit，in Laos［J］.Geological Survey and Research，40（4）：290-294．

Wang Jieting， Sun Shuanghai， Lu Junhua， al et，2019.Disussion of lateral trending and deep explorating prospection for Phabon Gold Deposit（Vein），Laos［J］.Gold Science and Technology，27（4）：480-488．

Yang Hongying， Yang Li， Wei Xujun，2000.Exploration for mineralogical study of refractory gold ore in bacterial oxidation［J］.Nonferrous Metals，52（1）：86-89.

Zhao Yanpeng， Mo Jiangping， Wang Xiaoman，2015.Clue for prospecting and metallogenic prognosis of Pangkuam Cu-Au Deposit in Laos［J］.Mineral Resources and Goelogy，29（2）：178-182．

Zhou Guangle， Li Jianping， Bi Xiaoping， al et，2006.Process Minralogy［M］.Beijing：Metallurgical Industry Press．

Zhu Yanzhe， Wu Jun， Cui Ziliang， al et，2007.Mineral resources in northern area of Laos with Its Ore-forming prediction［J］.Mineral Resources and Goelogy，21（6）：665-667．

陈喜峰，叶锦华，向运川，等，2017.东南亚地区重要矿床地质特征及找矿潜力［J］.地质通报，2017，36（1）：50-65.

丁秘枣，牛洪联，2010.金化学物相分析现状及浅析［J］.内蒙古石油化工，9（ 4）：19-20．

盖晓谦，韩志伟，2019.老挝爬奔金矿蚀变类型与成矿关系研究［J］ .新疆有色金属，42（3）：64-66．

高亚龙，牛英杰，刘智勇，等，2017.老挝金矿资源分布特征与成矿远景［J］.现代矿业，33（5）：20-25．

郭林楠，侯林，刘书生，等，2019.老挝帕奔金矿床成矿流体来源与矿床成因：稀土元素和C、O、S同位素证据［J］.矿床地质，38（2）：233-250.

李会恺，张翔君，王军，2011.老挝琅勃拉邦爬奔金矿矿床地质及成因探讨［J］. 云南地质，30（3）：280-284．

刘成义，1995.山东金矿工艺矿物学概论［M］.北京：冶金工业出版社．

刘英磊，2017.老挝乌多姆赛省巴勉金矿床成矿地质条件及找矿潜力分析［D］.长春：吉林大学．

卢映祥，刘洪光，黄静宁，等，2009.东南亚中南半岛成矿带初步划分与区域成矿特征［J］.地质通报，28（2/3）：314-325．

施美凤，林方成，刘朝基，等，2013.东南亚缅泰越柬五国与中国邻区成矿带划分及成矿特征［J］. 沉积与特提斯地质，33（2）：103-112．

王峰，郭茂生，王凯，等，2006.金矿石化学物相分析标准物质的研制［J］.岩矿测试，25（3）：263-269．

王杰亭，刘争，韩志伟，等，2017.老挝爬奔金矿床角砾岩型金矿体成因探讨［J］.地质调查与研究，40（4）：290-294.

王杰亭，孙双海，卢俊华，等，2019.老挝爬奔金矿床金矿（脉）体侧伏规律及深部找矿前景分析［J］. 黄金科学技术，27（4）：480-488．

杨洪英，杨立，魏绪钧，2000.细菌氧化难浸金矿石的矿物学研究探讨［J］.有色金属，52（1）：86-89．

赵延朋，莫江平，王晓曼，2015.老挝班康姆铜金矿床找矿标志及成矿预测研究［J］.矿产与地质，29（2）：178-182．

周光乐，李建平，毕晓平，等，2006.工艺矿物学［M］.北京：冶金工业出版社．

朱延浙，吴军，崔子良，等，2007.老挝北部地区矿产资源与成矿预测［J］.矿产与地质，21（6）：665-667．

Options
Outlines

/

〈 〉

[an error occurred while processing this directive]