Study on the Inlay Characteristics and Occurrences of Yunnan Porphyry Polymetallic Gold Deposits

Rong-xin LIU; Kun ZHU; Hai-yun XIE; Peng-fei ZHANG; Chao DING; Ji-zong WU; Xiong TONG

doi:10.15898/j.cnki.11-2131/td.201710200169

2018 Vol. 37, No. 4

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Article navigation > Rock and Mineral Analysis > 2018 > 37(4): 404-410

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Rong-xin LIU, Kun ZHU, Hai-yun XIE, Peng-fei ZHANG, Chao DING, Ji-zong WU, Xiong TONG. Study on the Inlay Characteristics and Occurrences of Yunnan Porphyry Polymetallic Gold Deposits[J]. Rock and Mineral Analysis, 2018, 37(4): 404-410. doi: 10.15898/j.cnki.11-2131/td.201710200169

Citation:

Rong-xin LIU, Kun ZHU, Hai-yun XIE, Peng-fei ZHANG, Chao DING, Ji-zong WU, Xiong TONG. Study on the Inlay Characteristics and Occurrences of Yunnan Porphyry Polymetallic Gold Deposits[J]. Rock and Mineral Analysis, 2018, 37(4): 404-410. doi: 10.15898/j.cnki.11-2131/td.201710200169

Study on the Inlay Characteristics and Occurrences of Yunnan Porphyry Polymetallic Gold Deposits

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
2.
Heqing Beiya Mining Co. LTD., Dali 671507, China
3.
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming 650093, China

More Information

Corresponding author: Hai-yun XIE, xie-haiyun@163.com

Received Date: 20 October 2017

Revised Date: 01 March 2018

Accepted Date: 07 May 2018

Abstract

Abstract

BACKGROUNDIn the Western Yunnan, there is an abundance of low-grade gold resources with uneven grain size, complicated ore structure and incomplete separation. Using the traditional mineralogical analysis process, it is difficult to achieve accurate and rapid determination of the occurrence of gold and the inlay characteristics of gold-bearing minerals. OBJECTIVESTo study the mineralogy process of polymetallic gold ores in Western Yunnan. METHODS:The mineral composition, dissemination size, and inclusions characteristics of gold ores were analyzed, and the effect of mineralogical properties of gold-bearing minerals on the recovery of gold was determined. The X-ray Fluorescence Spectrometer and eight-lamp flame graphite furnace integrated Atomic Absorption Spectrometer were used for the analysis of ore properties, and the ore samples were analyzed by Mineral Liberation Analysis. RESULTSThe results show that gold is mainly in the form of free gold, with superfine dissemination size of gold minerals, mainly concentrated on the 0.01 mm to 0.02 mm granularity level. Gold smaller than 0.074 mm presents as free monomer natural gold, which accounts for 50.08% of the total gold. Other gold occurs as inclusions in pyrite, magnetite and chalcopyrite. However, the gold-bearing minerals have small grain size, poor dissociation, and uneven embedding. CONCLUSIONSIncreasing the dissociation degree of major gold-bearing minerals is an important method for increasing gold recovery.
- porphyry type polymetallic gold deposit /
- process mineralogy /
- Mineral Liberation Analysis /
- dissociation degree of minerals

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References

[1]	卢杰, 王建国, 严松涛, 等.我国西部金矿资源现状及发展对策[J].中国矿业, 2015, 24(10):10-14. doi: 10.3969/j.issn.1004-4051.2015.10.003 CrossRef Google Scholar Lu J, Wang J G, Yan S T, et al.Analysis of the current situation and developmental countermeasures of gold resources in West China[J].China Mining Magazine, 2015, 24(10):10-14. doi: 10.3969/j.issn.1004-4051.2015.10.003 CrossRef Google Scholar
[2]	Agorhom E A, Skinner W, Zanin M.Influence of gold mineralogy on its flotation recovery in a porphyry copper-gold ore[J].Chemical Engineering Science, 2013, 99:127-138. doi: 10.1016/j.ces.2013.05.037 CrossRef Google Scholar
[3]	马芳源, 代淑娟, 刘淑杰.中国难处理金矿石研究现状[J].黄金, 2017, 38(1):64-67. Google Scholar Ma F Y, Dai S J, Liu S J.Current research status of refractory gold ores in China[J].Gold, 2017, 38(1):64-67. Google Scholar
[4]	刘志楼, 杨天足.难处理金矿的处理现状[J].贵金属, 2014, 35(1):79-83. doi: 10.3969/j.issn.1004-0676.2014.01.018 CrossRef Google Scholar Liu Z L, Yang T Z.Treatment status for refractory gold ores[J].Precious Metals, 2014, 35(1):79-83. doi: 10.3969/j.issn.1004-0676.2014.01.018 CrossRef Google Scholar
[5]	Liu B, Liu H, Zhang C Q, et al.Geochemistry and geochronology of porphyries from the Beiya gold-polymetallic orefield, Western Yunnan, China[J].Ore Geology Reviews, 2015, 69:360-379. doi: 10.1016/j.oregeorev.2015.03.004 CrossRef Google Scholar
[6]	谢建宏, 贾学国, 张晓民.黄金选冶[M].北京:冶金工业出版社, 2014:10-13. Google Scholar Xie J H, Jia X G, Zhang X M.Selection and Metallurgy of Gold[M].Beijing:Metallurgical Industry Press, 2014:10-13. Google Scholar
[7]	Rabieh A, Eksteen J J, lbijanic B.The effect of grinding chemistry on cyanide leaching of gold in the presence of pyrrhotite[J].Hydrometallurgy, 2017, 173:115-124. doi: 10.1016/j.hydromet.2017.08.013 CrossRef Google Scholar
[8]	周云满, 高起方, 刘志斌, 等.滇西北衙金多金属矿床金的赋存状态研究[J].矿物学报, 2017, 37(1):231-245. Google Scholar Zhou Y M, Gao Q F, Liu Z B, et al.Occurrence of gold from Beiya gold-polymetallic deposit in Northwestern Yunnan Province, China[J].Acta Mineralogica Sinica, 2017, 37(1):231-245. Google Scholar
[9]	Spry P G, Chryssoulis S, Ryan C G.Process mineralogy of gold:Gold from telluride-bearing ores[J].Journal of the Minerals, 2016(8):60-62. Google Scholar
[10]	王明志, 韩润生, 王雷, 等.滇西北北衙金矿床万硐山-笔架山矿段构造地球化学特征[J].中国地质, 2016, 43(1):238-248. doi: 10.3969/j.issn.1000-3657.2016.01.017 CrossRef Google Scholar Wang M Z, Han R S, Wang L, et al.Tectono-geochemical characteristics of Wandongshan-Bijiashan ore block in the Beiya Au-polymetallic deposit, Northwestern Yunnan[J].Geology in China, 2016, 43(1):238-248. doi: 10.3969/j.issn.1000-3657.2016.01.017 CrossRef Google Scholar
[11]	He W Y, Mo X X, He Z H.The geology and mineralogy of the Beiya skarn gold deposit in Yunnan, Southwest China[J]. Economic Geology, 2015, 110(6):1625-1641. doi: 10.2113/econgeo.110.6.1625 CrossRef Google Scholar
[12]	李艳峰, 付强.利用MLA对某铜矿石中伴生微细粒金、银的工艺矿物学研究[J].有色金属(选矿部分), 2016(4):1-4. doi: 10.3969/j.issn.1671-9492.2016.04.001 CrossRef Google Scholar Li Y F, Fu Q.Study on process mineralogy of low-grade associated gold, silver in a copper ore[J].Nonferrous Metals (Mineral Processing Section), 2016(4):1-4. doi: 10.3969/j.issn.1671-9492.2016.04.001 CrossRef Google Scholar
[13]	王明燕, 郜伟, 王玲.云南某金多金属矿的工艺矿物学研究[J].有色金属(选矿部分), 2016(3):1-5. doi: 10.3969/j.issn.1671-9492.2016.03.001 CrossRef Google Scholar Wang M Y, Gao W, Wang L.Process mineralogy study on a Au polymetallic ore in Yunnan[J].Nonferrous Metals (Mineral Processing Section), 2016(3):1-5. doi: 10.3969/j.issn.1671-9492.2016.03.001 CrossRef Google Scholar
[14]	谢海云, 叶群杰, 周平, 等.云南思茅地区铜锌硫化矿工艺矿物学分析[J].岩矿测试, 2014, 31(3):345-352. doi: 10.3969/j.issn.0254-5357.2014.03.011 CrossRef Google Scholar Xie H Y, Ye Q J, Zhou P, et al.Process mineralogy analysis of copper-zinc sulfide ore from the Simao region, Yunnan Province[J].Rock and Mineral Analysis, 2014, 31(3):345-352. doi: 10.3969/j.issn.0254-5357.2014.03.011 CrossRef Google Scholar
[15]	Qiu X B, Wen J K, Huang S T, et al.New insights into the extraction of invisible gold in a low-grade high-sulfur[J].International Journal of Minerals, Metallurgy, and Materials, 2017, 24(10):1104-1111. doi: 10.1007/s12613-017-1501-7 CrossRef Google Scholar
[16]	聂轶苗, 牛福生, 张悦.工艺矿物学在矿物加工中的应用及发展趋势[J].中国矿业, 2011, 20(4):121-123. doi: 10.3969/j.issn.1004-4051.2011.04.032 CrossRef Google Scholar Nie Y M, Niu F S, Zhang Y.Application of mineralogy in ore dressing and its trend[J].China Mining Magazine, 2011, 20(4):121-123. doi: 10.3969/j.issn.1004-4051.2011.04.032 CrossRef Google Scholar
[17]	邱显扬.北衙金矿金银铁矿石特性与选矿回收的关系[J].黄金, 2016, 37(10):54-59. Google Scholar Qiu X Y.Relationship between the properties and bene-ficiation of Au-Ag-Fe ore in Beiya gold mine[J].Gold, 2016, 37(10):54-59. Google Scholar