摘要
利用化学分析、X射线衍射和光学显微镜等方法,系统研究了云南省某金矿的矿物学特征。结果表明,该矿石的金品位为3.55 g/t,伴生元素银为2.96 g/t,可综合回收。黄金矿产以天然金和银金为主,其细粒级分布特性复杂。金的主要载体矿物为黄铁矿等硫化物矿物,粒度也都很细,还有一些自然金以细小颗粒和微颗粒嵌入脉石矿物。通过浮选磨矿细度探索性试验,确定该矿样合适的磨矿细度为-0.045 mm含量占70%。试验研究结果为制定合理的选矿工艺提供了依据。
The paper systematically studied the process mineralogy characteristics of gold ores in Yunnan through chemical analysis,X-ray diffraction and optical microscopy.The results show that the gold grade of the ore is 3.55 g/t,and the associated element silver is 2.96 g/t,which can be comprehensively recovered.The main metal minerals are pyrite,arsenopyrite,rutile and sphalerite.The gangue minerals are mainly quartz,muscovite,potassium feldspar and iron dolomite.The gold minerals are mainly natural gold and silver gold,with fine dissemination granularity and complex production characteristics.The sulfide minerals such as pyrite,the main carrier mineral of gold,are also very fine in particle size,in addition,some natural gold and silver gold deposits are embedded in gangue mineral grains,cracks or wrapped in them.The flotation grinding fineness tests were carried out to determine that the appropriate grinding fineness of the ore sample was-0.045 mm accounting for 70%.The research results have providing theoretical basis for the formulation of ore separation process.
作者
华芳
吴为荣
周健
杨玲
HUA Fang;WU Wei-rong;ZHOU Jian;YANG Ling(China Gold Group Jiangxi Sanhe Gold Co.Ltd.,Dexing 334213,Jiangxi,China)
出处
《矿冶》
CAS
2023年第2期143-149,共7页
Mining And Metallurgy
关键词
工艺矿物学
金矿石
物质组成
嵌布关系
赋存状态
解离度
磨矿细度
process mineralogy
gold ore
material composition
occurrence state
embedding relation
dissociation degree
grinding fineness
