湖南某含砷金矿的工艺矿物学研究

金属矿山 ›› 2022, Vol. 51 ›› Issue (09): 132-139.

湖南某含砷金矿的工艺矿物学研究

梁斌珺¹ 胡海祥¹ 邹尚² 唐丽群³

1. 赣南科技学院,江西赣州 341000;2. 湖南黄金洞矿业有限责任公司,湖南岳阳 410400;3. 广西安全工程职业技术学院,广西南宁 530100

出版日期:2022-09-15 发布日期:2022-10-13
基金资助:
江西省教育厅资助项目(编号:GJJ181513);江西省科技厅自然科学基金面上项目(编号:20202BAB204014);中国博士后科学基金资助项目(编号:2020M671959);江西省博士后科研择优资助项目(编号:2019KY51)

Research on Process Mineralogy of a Arsenic-containing Gold Ore in Hunan Province

LIANG Binjun¹HU Haixiang¹ ZOU Shang² TANG Liqun³

1. Gannan University of Science and Technology,Ganzhou 341000,China;2. Hunan Huangjindong Mining Co. ,Ltd. ,Yueyang 410400,China;3. Guangxi Vactional College of Safety Engineering,Nanning 530100,China

Online:2022-09-15 Published:2022-10-13

摘要/Abstract

摘要： 湖南某地金矿石中含有较高的砷和碳,浮选所得金精矿中金的品位和回收率均较低,属难处理金矿的典型代表。为充分了解该金矿石的性质以优化浮选指标,利用化学多元素分析、X 射线衍射仪、光学显微镜、扫描电镜 (SEM)、元素化学物相分析和矿物参数自动分析系统( MLA)等多种测试手段对矿石的工艺矿物学进行了系统的研究。结果表明:矿石中有价元素金的平均品位为 3.40 g / t,有害元素砷和碳的含量分别为 0. 36%和 1. 42%;矿石中的金属矿物主要为银黝铜矿、白钨矿、黄铁矿、毒砂和菱铁矿等,非金属矿物以石英和绢云母为主,其次为高岭石、绿泥石、蛇纹石等;矿石中的金矿物均为自然金,平均成色为 999. 5‰,主要呈角粒状和尖角粒状,其次为长角粒状,粒度小于 19 μm 者占 98. 95%,属微细粒金的范畴;在磨矿细度为-0. 074 mm 占65%的条件下,矿石中的单体及裸露金和硫化物包裹金的分布率分别为 5. 90%和 88. 79%,二者合计分布率为 94. 69%,即该磨矿细度下金的最大理论回收率。推荐的原则工艺流程为重选+浮选。

关键词: 含砷金矿, 嵌布特征, 粒度分布, 金的赋存状态

Abstract: A gold ore in Hunan Province contains high arsenic and carbon,and the gold concentrate obtained by flotation process is with low grade and recovery rate,which is a typical representative of refractory gold ore. The process mineralogy of gold ore was systematically studied by means of chemical multi-elements analysis,X-ray diffractometer,optical microscope, scanning electron microscope ( SEM),elemental chemical phase analysis and mineral liberation analysis ( MLA) in order to fully grasp the ore properties for optimizing the flotation indexes. The results showed that the average grade of valuable element gold in the ore was 3. 40 g / t,and the contents of harmful elements arsenic and carbon were 0. 36% and 1. 42%,respectively. The metallic minerals in the ore are mainly freibergite,scheelite,pyrite,arsenopyrite and siderite,while the non-metallic minerals are mainly quartz and sericite,followed by kaolinite,chlorite,serpentine and so on. The gold minerals in the ore are all natural gold with an average fineness of 999. 5‰. The morphology of the gold is mainly angular-grain and angulargrained,followed by long horned granular. The gold particle size of less than 19 μm accounted for 98. 95%,which belongs to the category of micro-fine particle. The distribution rates of monomer,exposed gold and sulfide wrapped gold in the ore are 5. 90% and 88. 79% under the condition of grinding fineness of -0. 074 mm accounting for 65%,respectively. And the total distribution rate of the two is 94. 69%,which is the maximum theoretical recovery rate of the gold at this grinding fineness. The recommended principle process flowsheet is gravity separation and flotation.

Key words: arsenic-containing gold ore,dissemination characteristic,particle size distribution,the occurence state of gold

梁斌珺, 胡海祥, 邹尚, 唐丽群. 湖南某含砷金矿的工艺矿物学研究[J]. 金属矿山, 2022, 51(09): 132-139.

LIANG Binjun, HU Haixiang, ZOU Shang, TANG Liqun. Research on Process Mineralogy of a Arsenic-containing Gold Ore in Hunan Province[J]. Metal Mine, 2022, 51(09): 132-139.

[1]	骆洪振, 张　凛, 徐　健, 杨含蓄, 赛明雨. 国外某伴生自然铜铁矿石工艺矿物学研究[J]. 金属矿山, 2024, 53(2): 183-.
[2]	常一杨阳许鹏张耕豪. CO2高速卸荷粉碎磁铁矿石产品的粒度分布与分形维数研究[J]. 金属矿山, 2024, 53(01): 202-206.
[3]	王怀, 赵声贵, 刘敬智, 于梓丰, 胡学平, 何玉军. 津巴布韦某铂钯矿工艺矿物学研究[J]. 金属矿山, 2023, 52(05): 282-289.
[4]	张慧婷, 赖春华, 冯媛媛, 王朝, 谢兰馨, 翁存建. 青海拉陵高里河下游某难选铜锌矿石工艺矿物学研究[J]. 金属矿山, 2023, 52(04): 138-145.
[5]	黄秋菊, 袁启东, 王志杰, 苏康, 姚灯磊. 安徽某铜银铅多金属矿石工艺矿物学研究[J]. 金属矿山, 2023, 52(02): 121-125.
[6]	任慧, 刘杰, 吕良, 王勋, 张淑敏. 内蒙古柴胡栏子金矿石的工艺矿物学研究[J]. 金属矿山, 2022, 51(11): 141-146.
[7]	王海亮, 姚灯磊, 高春庆. 藏中某铜锌铁多金属矿工艺矿物学研究[J]. 金属矿山, 2022, 51(11): 134-140.
[8]	李少平, 王锦柯, 张伟光, 李杰, 董法. 新疆某低品位硫化铅锌矿石选矿试验研究[J]. 金属矿山, 2022, 51(11): 120-125.
[9]	高鹏, 张洪浩, 袁帅, 张宁豫, 韩力仁, 秦永红. 基于高压电脉冲技术的方铅矿石破碎试验研究[J]. 金属矿山, 2022, 51(09): 115-120.
[10]	李国峰, 李椿楠, 栗艳锋, 刘立伟. 搅拌磨机磨矿工艺参数对产品粒度特征的影响[J]. 金属矿山, 2022, 51(07): 212-218.
[11]	吕超, 张晶, 杨林, 张曙光. 云南某高硫低品位铅锌矿工艺矿物学研究[J]. 金属矿山, 2022, 51(07): 206-211.
[12]	李瑞光, 胡海祥. 江西某微细选钨尾砂工艺矿物学研究[J]. 金属矿山, 2022, 51(05): 142-147.
[13]	任玥, 汪紫烟, 白丁. 刚果（金）SODIMIKA表层氧化铜钴矿的工艺矿物学研究[J]. 金属矿山, 2022, 51(05): 129-134.
[14]	赵熙刘东泉周立波李文博. 铁山矿区某铜矿工艺矿物学研究[J]. 金属矿山, 2021, 50(09): 127-131.
[15]	丁大发, 邱杨率, 张凌燕, 魏少巍. 细鳞片石墨浮选中擦洗代替再磨工艺试验研究[J]. 金属矿山, 2021, 50(09): 120-126.

扫码分享