某低品位铅锌铜多金属硫化矿富集与分离试验研究  

Experimental Research on Enrichment and Separation of a Low-grade Lead-zinc-copper Polymetallic Sulfide Ore

作　　者：郑海雷 高起方 龚明辉[1,2] 赵志强 刘崇俊 ZHENG Hailei;GAO Qifang;GONG Minghui;ZHAO Zhiqiang;LIU Chongjun(Yunnan Gold&Mining Group Co.,Ltd.,Kunming 650299,China;Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Beijing General Research Institute of Mining&Metallurgy,Beijing 102628)

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650299 [2]昆明理工大学国土资源工程学院,云南昆明650031 [3]矿冶科技集团有限公司,北京102628

出　　处：《金属矿山》2024年第6期130-137,共8页Metal Mine

基　　金：国家自然科学基金区域创新发展联合基金项目(编号:U20A20269)。

摘　　要：云南某低品位铅锌铜多金属硫化矿铅品位0.61%、锌品位3.28%、铜品位0.25%,伴生Au、Ag品位分别为0.09、18.04 g/t。矿石嵌布粒度较细,共生关系复杂。为高效开发利用该低品位矿石,进行了系统的浮选试验。结果表明:矿石采用铜铅混合浮选—铜铅分离—锌浮选工艺处理,获得了铜品位21.97%、铜回收率80.85%、金品位1.60 g/t、银品位189.00 g/t、铅品位1.80%的铜精矿,铅品位76.22%、铅回收率88.72%、金品位0.75 g/t、银品位1433.00 g/t、铜品位1.87%的铅精矿,锌品位52.18%、锌回收率93.03%的锌精矿,主要有价成分铅、锌、铜的分离与富集效果较好,金、银一定程度富集在铜精矿、铅精矿中;铜精矿锌含量偏高与黄铜矿、闪锌矿间的嵌布关系异常密切有关;原矿Au、Ag品位低,且在矿石中分散程度高是造成金银综合回收指标偏低的原因。A low-grade lead-zinc-copper polymetallic sulfide ore in Yunnan has lead grade of 0.61%,zinc grade of 3.28%,and copper grade of 0.25%.The associated Au and Ag grades are 0.09 and 18.04 g/t,respectively.The disseminated grain size of the ore is fine and the symbiotic relationship is complex.In order to efficiently develop and utilize the low-grade ore,a systematic flotation test was carried out.The results show that the copper concentrate with copper grade of 21.97%,copper recovery of 80.85%,gold grade of 1.60 g/t,silver grade of 189.00 g/t and lead grade of 1.80%,the lead concentrate with lead grade of 76.22%,lead recovery of 88.72%,gold grade of 0.75 g/t,silver grade of 1433.00 g/t and copper grade of 1.87%,and the zinc concentrate with zinc grade of 52.18%and zinc recovery of 93.03%were obtained by copper lead mixed flotation-copper lead separation-zinc flotation process.The separation and enrichment effect of the main valuable components of lead,zinc and copper is good.Gold and silver are enriched in copper concentrate and lead concentrate to a certain extent.The high zinc content in copper concentrate is related to the closely dissemination relationship between chalcopyrite and sphalerite.The low grade of Au and Ag in the raw ore and the high degree of dispersion in the ore are the reasons for the low comprehensive recovery index of gold and silver.

关 键 词：铅锌铜 多金属硫化矿 铜铅混浮 抑铜浮铅 锌浮选 综合回收 

分 类 号：TD923[矿业工程—选矿] TD952