云南某细粒硫化铜矿选矿试验研究  

Experimental Study on Beneficiation of a Fine-grained Copper Sulfide Ore in Yunnan

作　　者：魏清成 刘殿文[1,3] 申培伦 汪浩翔 谢海云 王涵[1,3] WEI Qingcheng;LIU Dianwen;SHEN Peilun;WANG Haoxiang;XIE Haiyun;WANG Han(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Kunming Jinyin Environmental Protection Technology Co.,Ltd.,Kunming 650031,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]昆明金印环保科技有限公司,昆明650031 [3]云南省战略金属矿产资源绿色分离与富集重点实验室,昆明650093

出　　处：《有色金属(选矿部分)》2025年第1期81-87,共7页Nonferrous Metals(Mineral Processing Section)

基　　金：国家自然科学基金资助项目(52074138);云南省重大科技计划项目(202202AG050015);云南省基础研究专项项目(202001AS070030,202201AU070099)。

摘　　要：铜是重要的战略性矿产资源,是国民经济和社会发展的重要基础原材料,因其优良的导电性、延展性及其耐腐蚀性被广泛应用于电力电气、电子设备、交通运输、空调制冷、建筑、家电、燃油汽车等各个领域。云南某露天铜矿,铜品位为1.43%、硫品位为10.62%,由于该矿石为表层矿石,风化严重,嵌布粒度细,次生硫化铜矿含量较高,含硫较高以及药剂制度不合理等因素,导致铜精矿品位及回收率偏低。针对现场药剂制度不合理、强压强拉、细粒次生硫化铜矿回收效果不佳等问题及该矿石性质,进行矿石多元素分析、物相分析、粒度筛分分析、选矿药剂优化试验、对比试验,最终采用石灰与黄铁矿抑制剂STY组合抑制黄铁矿,硫化钠活化次生硫化铜矿,丁基黄药与螯合捕收剂LS901组合捕收,在实验室条件下证明了采用该药剂制度能有效提高铜选矿指标,并在实验室试验的基础上进行了工业试验,工业试验的矿石经过混匀处理,矿石品位、氧化率、次生硫化铜含量、嵌布粒度基本相同。工业试验结果表明,当矿石铜品位为1.49%时,新药剂制度铜回收率提高了5.13百分点,铜精矿品位提高了3.57百分点。Copper is an important strategic mineral resource and an important basic raw material for national economic and social development.It is widely used in electric power,electronic equipment,transportation,air conditioning and refrigeration,construction,home appliances,fuel vehicles and other fields because of its excellent electrical conductivity,ductility and corrosion resistance.An open-pit copper mine in Yunnan has a copper grade of 1.43%and a sulfur grade of 10.62%.Because the ore is a surface ore with severe weathering,fine disseminated particle size,high content of secondary copper sulfide,high sulfur content and unreasonable reagent system,the grade and recovery of copper concentrate are low.In view of the problems of unreasonable on-site reagent system,strong pressure pulling,poor recovery of fine-grained secondary copper sulfide ore and the properties of the ore,multi-element analysis,phase analysis,particle size screening analysis,optimization test of beneficiation reagents and comparative test were carried out.Finally,the combination of lime and pyrite inhibitor STY was used to inhibit pyrite,sodium sulfide activated secondary copper sulfide ore,and butyl xanthate and chelating collector LS901 were combined to collect.Under laboratory conditions,it was proved that the reagent system could effectively improve the copper beneficiation index,and industrial tests were carried out on the basis of the laboratory.The ore in the industrial test was mixed evenly.The ore grade,oxidation rate,secondary copper sulfide content and disseminated particle size are basically the same.The industrial test results show that when the copper grade of the ore is 1.49%,the copper recovery of the new reagent system is increased by 5.13 percentage points,and the copper concentrate grade is increased by 3.57 percentage points.

关 键 词：高硫铜矿 次生硫化铜 铜硫分离 黄铁矿抑制剂 

分 类 号：TD923[矿业工程—选矿] TD952