Process Mineralogy study on a Gold Ore in Western Henan Province

LIU Lu; GUO Jungang; YANG Yukun; CHENG Xintao; BIAN Xiaodong; MA Chi

doi:10.13779/j.cnki.issn1001-0076.2018.06.016

2018 Vol. 38, No. 6

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Article navigation > Conservation and Utilization of Mineral Resources > 2018 > (6): 77-80, 86

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LIU Lu, GUO Jungang, YANG Yukun, CHENG Xintao, BIAN Xiaodong, MA Chi. Process Mineralogy study on a Gold Ore in Western Henan Province[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 77-80, 86. doi: 10.13779/j.cnki.issn1001-0076.2018.06.016

Citation:

LIU Lu, GUO Jungang, YANG Yukun, CHENG Xintao, BIAN Xiaodong, MA Chi. Process Mineralogy study on a Gold Ore in Western Henan Province[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 77-80, 86. doi: 10.13779/j.cnki.issn1001-0076.2018.06.016

Process Mineralogy study on a Gold Ore in Western Henan Province

1.
Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Scicences, Zhengzhou 450006, China
2.
Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ores of Ministry of Natrual Resources, Zhengzhou 450006, China
3.
Key Laboratory of Comprehensive Utilization of Gold Resource in Henan Province, Zhengzhou 450006, China
4.
China Aluminum Mining Co. Ltd., Zhengzhou Branch, Zhengzhou 450041, China

Received Date: 18 July 2018

Publish Date: 25 December 2018

Abstract

Abstract

In order to comprehensively utilize the gold and tungsten resources and provide a basis for the optimization of mineral dressing process, process mineralogy study is carried out on a quartz vein type gold-tungsten ore from Henan province using MLA analysis, traditional chemical analysis, X-ray analysis and other methods. The results show that the grades of valuable elements Au and W are 2.15 g/t and 0.12% in WO₃. Au element mainly exists in the form of independent minerals such as natural gold, bismuth gold and silver ore, and closely coexists with metal sulfides, which is mainly in the form of fine-grained and wrapped gold in pyrite. When the grinding fineness (-0.074 mm size fraction) is 65%, only 13.56% gold is released, and 82.86% gold is still wrapped in pyrite. Meanwhile, the chemical analysis shows that the gold contents in pyrite and pyrrhotite are 22.3 g/t and 3.09 g/t, respectively. The tungsten minerals exist mainly in scheelite with fine grain size of 0.1~0.01 mm and a small amount of wolframite. Therefore, gold can be further benefited by magnetic separation of pyrrhotite from the gold flotation concentrate and scheelite was recovered by flotation from the gold tailings.
- gold ore /
- scheelite /
- pyrite /
- western Henan province /
- process mineralogy

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