摘要
氧化铅锌矿是重要的铅锌资源,然而,其物质组成复杂、矿物嵌布粒度细、与脉石矿物共生关系紧密且易泥化的特性,导致常规选矿工艺难以获得高品位与高回收率的铅、锌精矿。为解决这一难题,本研究以高氧化率、高含泥的难选氧化铅锌矿为对象,提出采用跳汰预富集工艺,旨在预先抛除大量矿泥、提升铅锌品位,为后续浮选作业提供合格原料。研究首先通过工艺矿物学系统解析了矿石性质;继而依据重选可选性准则,详细考察了给矿量、人工床层厚度及水量等关键参数对铅、锌富集行为的影响。试验结果表明,在最佳工艺条件下,铅、锌品位可分别由原矿的1.15%和6.13%显著提高至1.76%和11.11%,回收率分别达到85.04%和83.33%。同时,尾矿产率达41.30%,在实现铅、锌高效富集的同时,有效达到了大量抛尾的目的。本研究为难选氧化铅锌矿的高效利用提供了一条具有潜力的技术途径。
Oxidized lead-zinc ores represent an important source of lead and zinc resources.However,their complex material composition,fine mineral dissemination,close association with gangue minerals,and susceptibility to sliming make it difficult for conventional beneficiation processes to obtain lead and zinc concentrates with both high grade and high recovery.To address this challenge,this study focuses on a refractory oxidized lead-zinc ore characterized by a high oxidation rate and high slime content.A jigging pre-enrichment process is proposed,aiming to pre-remove a significant amount of slime and upgrade the lead-zinc grade,thereby providing qualified feed for subsequent flotation operations.The research began with a systematic analysis of the ore properties through process mineralogy.Subsequently,guided by the principles of gravity separation feasibility,the effects of key parametersincluding feed rate,artificial bed thickness,and water flow rate-on the enrichment behavior of lead and zinc were investigated in detail.Experimental results indicate that under optimal conditions,the grades of lead and zinc were significantly increased from 1.15%and 6.13%in the raw ore to 1.76%and 11.11%,respectively,with recoveries reaching 85.04%and 83.33%.Concurrently,the tailings yield reached 41.30%,effectively achieving the dual objectives of efficiently enriching lead and zinc while discarding a large proportion of tailings.This study provides a promising technical pathway for the efficient utilization of refractory oxidized lead-zinc ores.
作者
向宇龙
梁溢强
孙建军
何海洋
黄庆霖
赖浩
申培伦
刘殿文
XIANG Yulong;LIANG Yiqiang;SUN Jianjun;HE Haiyang;HUANG Qinglin;LAI Hao;SHEN Peilun;LIU Dianwen(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources,Kunming 650093,China;Kunming Metallurgical Research Institute,Kunming 650031,China)
出处
《矿冶》
2026年第1期42-45,共4页
Mining And Metallurgy
基金
云南省基础研究计划项目(202401AT070398)。
关键词
氧化铅锌矿
跳汰
预富集
抛尾
工艺矿物学
oxidized lead-zinc ore
jigging
pre-enrichment
tailing rejection
process mineralogy
