前言-有色金属（选矿部分）.doc

(广西某低品位硫氧混合型铅锌矿选矿工艺 肖 骏1，董艳红张笃刘兵陈代雄苏振华（1.湖南有色金属研究院 复杂铜铅锌共伴生金属资源综合利用湖南省重点实验室，长沙410100 摘 要：在工艺矿物学研究的基础上某硫氧混合型铅锌矿进行了选矿研究。，矿石中属于细粒嵌布，、黄铁矿相互交代连生，部分氧化和，采用优先浮的工艺流程获得精矿、锌。得到铅精矿和锌精矿混合型锌分离；低品位TD 923 文献标志码： A 文章编号: Beneficiation of a Low Grade Sulfide-oxidiged Pb-Zn Mixed Ore in Guangxi XIAO Jun1 ,DONG Yan-hong1,ZHANG Du2,LIU Bin2,CHEN Dai-xiong1,SU Zhen-hua2 （1. Hunan Provincial Key Laboratory for Complex Copper Lead Zinc Associated Metal Resources Comprehensive Utilization, Hunan Research Institute for Non-ferrous Metals, Changsha 4101001. 2.Guangxi Zhongjin Lingnan Mining Co. Ltd.Laibing 545900） Abstract:Beneficiation of a large-scale low grade sulfide-oxidiged Pb-Zn mixed ore in Guangxi Province based on mineralogy study was conducted.The results show that the galena minerals are fine-particle embedding minerals, and the galena sphalerite and pyrite are closely coexisting with each other,moreover, the ore is partially oxidized and muded. The study adopted the technological process including pb-preferential flotation-zinc activation flotation to achieve galena concentrate and zinc concentrate. The results of whole process test are as follows:galena concentrate containing 52.13% Pb and 3.15% Zn with the galena recovery rate of 61.36%,zince concentrate containing 51.60% Zn with zinc recovery rate of 90.04%. Keywords:; sulfide-oxidiged Pb-Zn mixed ore；lead-zinc separation;collector;lowe-grade 前言 随着我国易采选、高品位的铅锌矿资源殆尽，难处理、低品位的铅锌矿的开发愈发引起我国矿业工作者的重视。，硫氧铅锌矿普遍存在繁多、矿石性质多变、与脉石矿物共、嵌生关系复杂等特点自然界中方铅矿风化、淋蚀作用下，先类的铅矾（SO4）铁矾矿物，再以碳酸铅为主的白铅矿矿物所以中大部分不高的硫氧矿的铅矿物除了方铅矿主要为矿物，增大了铅锌及分离的难度。品位硫氧混合型具有较高的综合利用价值。该混合型铅锌矿矿石繁杂，中的铅、锌品位较低，且有部分氧化和泥化，中的铅的主要氧化矿物为铅矾，回收难度较大，本文针对该硫氧混合型铅锌矿的矿石特性，处理该矿石，着重考察铅锌浮选流程中药剂对铅锌浮选指标的。 1.1 原矿的化学组成及矿物组成 矿石肉眼，块状浸染状构造经显微镜、扫描电镜及X射线衍射分析综合研究查明，原矿中矿物为方铅矿、闪锌矿、黄铁矿其次为褐铁矿灰锑铅矿，矿物主要为白云石、方解石、云母等，以及少量的石榴子石石英、高岭土、透辉石、角闪石等多元素分析结果如表。 表1　原矿化学多元素分析结果 Tab 1 Analysis results of multi-element of run-of-mine ore/%% 组 分 Pb Zn Cu Fe S As Au1) 含 量 0.67 3.76 0.015 5.12 9.79 0.11 0.2 组 分 SiO2 Al2O3 CaO Mg