摘要
为了开发利用地下深部矿物中铜、铁、锌等有用金属,采用MLA系统对四川某铜矿深部难选矿进行了工艺矿物学研究,分析了矿物的结构、组成、元素配分、嵌布特征及粒度分布,结果表明:矿物中铁元素的质量分数最高,达27.01%;深部矿物中铜、锌元素质量分数均高于浅部矿物,特别是锌元素,深部矿物较浅部矿物高出1.64%,而铜元素仅高出0.6%;原矿中主要金属矿物为磁黄铁矿,另有少量黄铜矿、铁闪锌矿;非金属矿物主要为石英,深部矿物中的黄铜矿质量分数比浅部矿物高出2.09%,铁闪锌矿质量分数高出2.71%;铜元素主要存在于黄铜矿中,达99.87%;铁元素主要存在于磁黄铁矿、黄铜矿、绿泥石和赤铁矿中,磁黄铁矿中的铁元素质量分数最高,达81.45%;锌元素主要存在于铁闪锌矿中,质量分数达99.53%。该矿石在-0.074 mm粒级占比为60%时,浮选铜、锌的效果最佳。磁黄铁矿和黄铜矿嵌布特征主要为单体解离形式,铁闪锌矿主要与其他矿物呈二元共生关系和三元包裹关系。矿物粒度主要分布在-1.2+0.424 mm区间,可通过磨矿实现完全解离。该研究成果可为该深部铜矿的高效开发提供理论指导。
In order to develop and utilize useful metals such as copper,iron,and zinc in deep underground minerals,the MLA system was used to study the process mineralogy of difficult to beneficiation minerals in a copper mine in Sichuan province.The structure,composition,element distribution,embedding characteristics,and particle size distribution of the minerals were analyzed.The results showed that the metal element iron has the highest mass fraction in the minerals,reaching 27.01%;The mass fractions of copper and zinc elements in deep minerals are higher than those in shallow minerals,especially zinc element.Deep minerals are 1.64%higher than shallow minerals,while copper element is only 0.6%higher;The main metallic mineral in the raw ore is pyrrhotite,with a small amount of chalcopyrite and sphalerite;The non-metallic minerals are mainly quartz.The mass fraction of chalcopyrite in deep minerals is 2.09%higher than that in shallow minerals,and the mass fraction of sphalerite is 2.71%higher;Copper element mainly exists in chalcopyrite,up to 99.87%;iron element mainly exists in pyrrhotite,chalcopyrite,chlorite and hematite,and the mass fraction of iron element in pyrrhotite is the highest,up to 81.45%;zinc element mainly exists in marmatite,up to 99.53%.The flotation effect of copper and zinc is best when the ore size fraction of-0.074 mm is 60%.The embedding characteristics of pyrrhotite and chalcopyrite are mainly in the form of monomer dissociation,while sphalerite mainly exhibits binary coexistence and ternary inclusion relationships with other minerals.The mineral particle size is mainly distributed in the range of-1.2+0.424 mm,which can be completely dissociated by grinding.This research result can provide theoretical guidance for the efficient development of the deep copper deposit.
作者
魏浪
傅开彬
李贺
廖飞
张维
孔云龙
刘泽铭
刘琪
WEI Lang;FU Kaibin;LI He;LIAO Fei;ZHANG Wei;KONG Yunlong;LIU Zeming;LIU Qi(Key Laboratory of Solid Waste Treatment and Resource Recycle,Ministry of Education,Mianyang Sichuan 621010,China;Tianfu Institute of Research and Innovation,Southwest University of Science and Technology,Chengdu Sichuan 610299,China;Sichuan Liwu Copper Mining Co.,Ltd.,Jiulong Sichuan 616200,China)
出处
《化工矿物与加工》
CAS
2024年第7期1-9,共9页
Industrial Minerals & Processing
基金
四川省科技计划资助项目(2022YFS0507)
甘孜州科技计划项目(210031,220012,21zkjjh0017)。
关键词
工艺矿物学
矿物结构
元素配分
磨矿细度
嵌布特征
粒度分布
process mineralogy
mineral structure
element partitioning
grinding fineness
embedding characteristics
particle size distribution
作者简介
魏浪(1996-),男,硕士研究生,主要从事难选冶矿石选矿研究;通信作者:傅开彬(1975-),男,博士,教授,博士生导师,主要从事难选冶矿石选矿、生物冶金、矿物材料以及矿山生态环境修复、固废处理与资源化等方面的研究,E-mail:fukaibin@126.com。
