CAJ | 학술논문

内蒙古翁牛特旗长汉卜罗铅锌矿位于新开地―乌丹近 EW 向大断裂的南侧,是一个叠加于前中生代褶皱基底之上的复合构造单元。本区矿石中银矿物和含银矿物种类较多,已发现8种,含银最高的为辉银矿,含银比较普遍的以黝铜矿族矿物为主。在黝铜矿矿物晶粒中,Ag 的含量不均匀,呈带状和不规则状分布。选矿工艺中应特别重视黝铜矿系列矿物的回收。矿石中黄铜矿是银矿物与含银矿物的最主要载体矿物,占统计总数的34.48%,有效回收黄铜矿,是提高银回收率的关键。以黝铜矿族为例,含银与否或银含量多寡,与矿物中 Sb 关系密切。大量数据证明,黝铜矿中较高的 As、Zn 不利于 Ag 的富集,而 Sb 与 Ag 有更为密切的成生关系。
내몽고옹우특기장한복라연자광위우신개지―오단근 EW 향대단렬적남측,시일개첩가우전중생대습추기저지상적복합구조단원。본구광석중은광물화함은광물충류교다,이발현8충,함은최고적위휘은광,함은비교보편적이유동광족광물위주。재유동광광물정립중,Ag 적함량불균균,정대상화불규칙상분포。선광공예중응특별중시유동광계렬광물적회수。광석중황동광시은광물여함은광물적최주요재체광물,점통계총수적34.48%,유효회수황동광,시제고은회수솔적관건。이유동광족위례,함은여부혹은함량다과,여광물중 Sb 관계밀절。대량수거증명,유동광중교고적 As、Zn 불리우 Ag 적부집,이 Sb 여 Ag 유경위밀절적성생관계。
Changhanboluo Pb-Zn deposit in Wengniuteqi of Inner Mongolia is located on the south side of Xin-kaidi-Wudan nearly EW-trending major fault.The deposit is a composite structural unit which superimposes on the pre-Mesozoic folded basement.In this area,various kinds of silver and silver-bearing minerals exist. Among the discovered 8 kinds of minerals,argentite is the one with highest silver content,while tetrahe-drite-group minerals are the most common silver-bearing minerals.However,the uneven distribution of Ag in the grains of tetrahedrite is characterized by banding or irregularity.Therefore,the author believes that the recovery of tetrahedrite-group minerals requires much attention in the ore-dressing process.Moreover, chalcopyrite is the most primary carrier mineral of silver and silver-bearing minerals,and statistically speak-ing it accounts for 34.48% of the total carrier minerals.Thus the effective recovery of chalcopyrite is the key to improve the recovery rate of Ag.This paper used tetrahedrite group as an example to demonstrate the close relationship between existence or quantity of Ag content and Sb in the minerals.Large amount of data indicates that high As and Zn in tetrahedrite prevent the formation of Ag,and there is a close genetic relation between Sb and Ag.