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| Research on raw ore process mineralogy of gold mine in Wulonggou of Qinghai Province |
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Received:December 23, 2020
Revised:January 13, 2021
Accepted:January 18, 2021
Published Online:August 18, 2021
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| DOI： |
| KeyWord:Process;mineralogy Phase;analysis Embedded;characteristics Granularity |
| Author | Institution |
| Yang Deming |
Qinghai 6th Institute of Geology Exploration;Doulan Jinhui Mining Co., Ltd.,Qinghai Engineering of Research Center for Gold Mineral Resourses Development |
| Li Fei |
Doulan Jinhui Mining Co,Ltd,Qinghai Engineering of Research Center for Gold Mineral Resourses Development;Qinghai 6th Institute of Geology Exploration |
| Xing Qingqing |
Doulan Jinhui Mining Co,Ltd,Qinghai Engineering of Research Center for Gold Mineral Resourses Development;Qinghai 6th Institute of Geology Exploration |
| Tie Ying |
Doulan Jinhui Mining Co,Ltd,Qinghai Engineering of Research Center for Gold Mineral Resourses Development;Qinghai 6th Institute of Geology Exploration |
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| Abstract: |
| The grade of raw ore is 2.32g/t by chemical multi-element analysis in Wulonggou gold mine, Qinghai Province. The flotation recovery rate of gold in concentrator production is only about 75%. In order to clarify the process mineralogical characteristics of the raw ore, effectively improve the flotation recovery rate of concentrator and other ore dressing technical indicators, and further realize the comprehensive development and utilization of the mineral resources, atomic absorption spectrometry was used The process mineralogy of raw ore in the yard of concentrator was studied by spectrophotometer, inductively coupled plasma atomic emission spectrometer, polarizing microscope and scanning electron microscope, so as to find out the element content, mineral composition, disseminated particle size and occurrence state of gold and its carrier minerals in the ore. The results show that: the content of arsenic and carbon in the ore is relatively high; the main precious metal minerals in the ore are natural gold, the main metal minerals are pyrite and arsenopyrite, followed by hematite, limonite, scorodite, etc., the main gangue minerals are quartz and sericite, followed by carbonate minerals, chlorite, calcite, etc. The main gold bearing minerals in the ore are pyrite, arsenopyrite and scorodite, in which the disseminated particle size of pyrite is mainly medium and coarse, the particle size of pyrite from - 0.64mm to + 0.04mm accounts for 86.95%, the disseminated particle size of arsenopyrite is mainly medium and fine, and the particle size of arsenopyrite from - 0.160mm to + 0.01mm accounts for 90.09%. The particle size of gold in the ore is supposed to be very fine. It can be observed that most of the gold particles are below 10um, and more than 86% of the gold particles are less than 0.02mm. Therefore, the raw ore is a very refractory metallurgical ore with slight to ultra refined arsenic and carbon. |
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