安徽某含铜铁硫矿石工艺矿物学研究

为查明安徽某矿石的综合利用价值,采用化学方法、显微镜鉴定、扫描电镜能谱分析等手段, 研究其化学组成、矿物组成及嵌布特征. 结果表明:试样属铜铁硫矿石,铜、铁、硫品位分别为 0.27 %、 27.87 %、16.76 %. 铜主要（94.4 %）以黄铜矿的形式存在,铁约 84.63 %以非磁性铁（黄铁矿、赤铁矿） 形式存在,次为磁铁矿,并含有少量磁黄铁矿. 铜、硫矿物主要为细粒嵌布,且单体解离良好,铁以粗中粒级嵌布为主,单体解离情况较差. 铜、铁、硫矿物形态各异,嵌布特征较复杂,分离较难.      

滇西某高硫难选铁矿高效回收铁试验研究

针对滇西某磁铁矿,因其磁铁矿嵌布粒度极细且富含磁黄铁矿,试验采用"阶磨阶选"工艺流程选铁,并对其磁粗精矿强化脱硫,在粗磨P_(80)=0.074 mm,再磨P_(99.3)=0.038 mm的条件下,试验获得了合格的铁精矿,其含铁64.28%,含硫0.25%,TFe回收率69.51%;同时获得了高硫铁精矿副产品,其含铁59.84%,含硫15.60%。试验为该铁矿资源的利用提供了可靠的技术支撑。     

安徽某含铜铁硫矿石工艺矿物学

为查明安徽某矿石的综合利用价值,采用化学方法、显微镜鉴定、扫描电镜能谱分析等手段,研究其化学组成、矿物组成及嵌布特征.结果表明:试样属铜铁硫矿石,铜、铁、硫品位分别为0.27%、27.87%、16.76%.铜主要(94.4%)以黄铜矿的形式存在,铁约84.63%以非磁性铁(黄铁矿、赤铁矿)形式存在,次为磁铁矿,并含有少量磁黄铁矿.铜、硫矿物主要为细粒嵌布,且单体解离良好,铁以粗中粒级嵌布为主,单体解离情况较差.铜、铁、硫矿物形态各异,嵌布特征较复杂,分离较难.     

攀枝花钒钛磁铁矿中硫化物的工艺矿物学研究

四川攀枝花地区有大量钒钛磁铁矿资源,该资源的硫化物中伴生有钴、镍、铜等有价金属。采用激光显微光谱分析、光谱半定量分析和电子探针定量分析等手段,对攀枝花地区钒钛磁铁矿中的硫化物进行详细的工艺矿物学研究,查明了矿石中硫化物的物质组成、主要硫化物矿物嵌布特性和主要有益元素赋存状态等。工艺矿物学研究结果,攀枝花地区的钒钛磁铁矿中硫化物主要为磁黄铁矿,其次为黄铜矿、黄铁矿、镍黄铁矿等,磁黄铁矿是钴、镍、铜等有价元素的赋存物,同时分析了该矿区不同矿段的硫化物特征及选矿产品中硫化物的走向等,研究结果可作为该钒钛磁铁矿的硫化矿中钴、镍、铜的合理开发利用的基础参考依据。     

从磁铁矿中浮选磁黄铁矿

本文介绍了从磁铁矿中浮选磁黄铁矿的试验结果,研究和分析了影响磁黄铁矿可浮性的主要因素,提出了磁铁矿脱硫的工艺流程和强化浮选的方法。     

西南印度洋海底多金属硫化矿工艺矿物学研究

本文以西南印度洋海底多金属硫化矿为研究对象,采用光学显微镜、X射线能谱仪、X射线衍射、化学分析等分析手段,对该矿石的化学组成、元素赋存状态、矿物组成、矿物间的嵌布关系及粒度分布进行了详细研究。研究表明:该矿石主要由铜矿物、锌矿物、黄铁矿、脉石组成,铜矿物主要为黄铜矿、氯铜矿、斑铜矿和铜蓝,锌矿物主要由菱锌矿、闪锌矿组成,主要硫化物为黄铁矿和硫化铜矿物,脉石矿物主要为石英、方解石。矿石中主要矿物嵌布关系复杂,各种矿物颗粒紧密的嵌布,大多结合成连生体,不利于彼此之间单体解离;主要矿物嵌布粒度粗细不均,铜矿物、黄铁矿和菱锌矿的粒度总体上均属于中细粒嵌布范畴。该研究为西南印度洋海底多金属硫化物有价资源的合理开发、综合利用提供了科学依据。     

加酸抑硅浮选工艺的探讨

一、金堆城钼矿矿石的原矿性质及其药剂制度金堆城钼矿床矿体赋存于花岗班岩及其接触的安山玢岩中,矿石类型主要为角页岩化安山玢岩及黑云母化安山玢岩。其次为花岗班岩,成细网脉状浸染构造。嵌布粒度不匀,以细粒嵌布为主,主要有用矿物为辉钼矿、黄铁矿、伴生有黄铜矿、磁铁矿等。脉石矿物主要是石英、云母、长石。辉钼矿与石英、长石共生密切。     

直流电场在铜浮选中的应用

河北铜矿矿石产于铜铁共生的接触交代矿床。含铜矿石按其可选性大致可分为两类:第一类为滑石、阳起石、透辉石、磁铁矿含铜矿石。金属矿物以黄铜矿、磁铁矿为主。嵌布粒度较粗,易于选别,称为易选矿石。第二类为蛇纹石、磁铁矿含铜矿石,金属矿物嵌布粒度较细,可选性差,称为难选矿石。生产实践证明,当入选矿石中难选矿石比例增加时,铜的浮选回收率随之下降。已查明,主要是墨铜矿及其与蛇纹石的连生     

新疆巴楚县钛资源综合回收利用技术取得突破性进展

<正>新疆巴楚县的钒钛磁铁矿原矿中铁、钛含量均相对较低,其中TFe 18.34%、TiO28.11%。其主要金属矿物为钛磁铁矿、钛铁矿、磁黄铁矿和黄铁矿等;矿石主要结构类型为自形晶-半自形晶、稀疏粒状结构、固溶体分解结构和不规则它形结构;主要构造类型为中等浸染状构造和星散浸染状构造。且原矿中的主要矿物(钛磁铁矿、钛铁矿、     

镜铁矿磁化焙烧前后矿物组成与嵌布结构变化分析

镜铁矿因为矿物组成复杂、嵌布粒度细微,是一种难选矿,因此对其细粒粉矿,采用回转窑进行磁化焙烧—磁选试验研究。试验结果表明,原矿焙烧效果良好,在细磨至-0.074 mm占85%,磁选强度为144 k A/m的工艺条件下,磁选精矿的铁品位仅为55.22%,显微镜分析结果表明,磁铁矿未充分单体解离,影响精矿铁品位。通过分析焙烧过程中含铁矿物的物相及其微观结构,表明原矿经过磁化焙烧,菱铁矿、褐铁矿及其大多镜铁矿已经转变成磁铁矿,部分磁铁矿解离发育完全,颗粒疏松多孔。但大多数磁铁矿的矿石结构沿袭原矿中的镜铁矿,嵌布特征与嵌布粒度未发生明显变化,磁铁矿的矿石构造仍旧以粗粒条带状,稠密集与稀疏侵染状为主,并呈"不等粒"形式嵌布于脉石矿物之中,部分磁铁矿嵌布粒度较细,影响后续磨矿解离。     

非洲中南部某镍矿石工艺矿物学性质

对非洲中南部某镍矿石的工艺矿物学特征进行研究，为合理有效利用该镍矿石提供依据，采用X射线荧光光谱分析、多元素分析、X射线衍射和镜下鉴定等方法，分析了矿石的化学成分、矿物组成、嵌布特征、矿石结构构造以及主要金属矿物磁黄铁矿和镍黄铁矿的嵌布粒度等。研究结果表明：该矿石中镍含量高达3.42%，以镍黄铁矿的形式存在；硫化镍矿嵌布粒度较粗，+150 μm粒级含量为38.20%，+75 μm粒级含量达68.58%，但分布不均匀。该矿石镍品位高且含镍矿物嵌布粒度相对较粗，属于易选矿石类型，白云石、滑石等含镁脉石矿物的存在是影响该镍矿分选的主要因素。     

Process mineralogy of suspended particles from a simulated commercial flash smelter

Polished sections of pyrometallurgical intermediate products from a simulated commercial flash furnace were examined by reflected light microscopy, scanning electron microscopy-energy dispersive spectrometry and electron backscatter analysis, and microprobe analysis for phase and textural relationships. The smelter feed is a copper concentrate from a porphyry copper deposit. The concentrate consists primarily of chalcopyrite, bornite, and pyrite with smaller amounts of covellite, chalcocite, molybdenite, magnetite, galena, and sphalerite. The flash furnace reactions for pyrite and chalcopyrite can be observed by reflected light microscopy. Reacted angular particles of pyrite exhibit successive rims of fibrous pyrrhotite and hematite or magnetite. Reacted angular chalcopyrite particles show successive rims of bornite, digenite, and chalcocite. Spherical particles, formed by the complete melting of former pyrite and chalcopyrite particles, consist of variable amounts of granular pyrrhotite with magnetite rims and minor hematite. Spherical particles, formed by the complete melting of former chalcopyrite particles, exhibit exsolution intergrowths with varying proportions of intermediate solid solution, bornite, digenite, and chalcocite, and have rims of hematite, magnetite, and copper-iron spinel. Electron microprobe analyses show that the iron oxides contain significant copper and minor zinc in their structures. Sphalerite and molybdenite do not show evident mineralogical reactions.     

哈西亚图金矿选矿综合回收利用研究

哈西亚图铁多金属矿床中共生的金矿规模已达中型,可大大提高该矿床的经济效益,对金矿综合回收利用方法的研究显得尤为重要。矿石工艺类型为中硫化物矽卡岩型金矿石,矿石自然类型属混合矿。矿石中主要金属矿物为磁铁矿、磁黄铁矿和黄铁矿,贵金属矿物为自然金和银金矿。通过试验研究,浮选工艺推荐“浮选金-尾矿磁选铁-铁精矿浮硫”方案,浸出工艺推荐“全泥氰化炭浸提金-尾渣磁选铁-铁精矿浮硫”方案。试验结果表明,采用全泥氰化炭浸-磁选铁（浮选除硫）工艺处理哈西亚图金矿石效果最佳。     

Process mineralogy of suspended particles from a simulated commercial flash smelter

Polished sections of pyrometallurgical intermediate products from a simulated commercial flash furnace were examined by reflected light microscopy, scanning electron microscopy-energy dispersive spectrometry and electron backscatter analysis, and microprobe analysis for phase and textural relationships. The smelter feed is a copper concentrate from a porphyry copper deposit. The concentrate consists primarily of chalcopyrite, bornite, and pyrite with smaller amounts of covellite, chalcocite, molybdenite, magnetite, galena, and sphalerite. The flash furnace reactions for pyrite and chalcopyrite can be observed by reflected light microscopy. Reacted angular particles of pyrite exhibit successive rims of fibrous pyrrhotite and hematite or magnetite. Reacted angular chalcopyrite particles show successive rims of bornite, digenite, and chalcocite. Spherical particles, formed by the complete melting of former pyrite and chalcopyrite particles, consist of variable amounts of granular pyrrhotite with magnetite rims and minor hematite. Spherical particles, formed by the complete melting of former chalcopyrite particles, exhibit exsolution intergrowths with varying proportions of intermediate solid solution, bornite, digenite, and chalcocite, and have rims of hematite, magnetite, and copper-iron spinel. Electron microprobe analyses show that the iron oxides contain significant copper and minor zinc in their structures. Sphalerite and molybdenite do not show evident mineralogical reactions.     

某难选锌硫矿石选矿工艺研究

在对某矿石岩矿鉴定的基础上,针对其富含磁黄铁矿的矿石性质,选矿试验确定两种方案进行试验。一方案为单一浮选流程,产品为锌精矿和硫精矿(磁黄铁矿与黄铁矿);另一方案为浮-磁-浮流程,产品为锌精矿、硫精矿及磁黄铁矿。对比单一浮选流程和浮-磁-浮流程工艺及试验结果,确定选用单一浮选流程     

载金硫化物焙烧-自浸出过程研究

针对传统氧化焙烧-氰化浸金工艺环境污染严重的现状,采用焙烧-自浸出工艺提取载金硫化物中的金.研究焙烧温度、焙烧时间和试样量对单质硫转化率和金浸出率的影响,通过X射线衍射分析、扫描电镜观察、能谱分析等手段分析焙烧过程中载金硫化物中硫的物相转变规律.载金硫化物中黄铁矿发生热分解反应生成单质硫和磁黄铁矿,随焙烧温度的升高和焙烧时间的延长,黄铁矿的特征衍射峰强度逐渐减小直到消失,磁黄铁矿的特征衍射峰逐渐生成并增强,原本致密状的黄铁矿颗粒变得疏松多孔.50 g试样在氮气流量1 L·min-1、焙烧温度800℃、焙烧时间60 min的条件下,单质硫的转化率达到42.53%,金浸出率达到88.70%,实现载金硫化物的高效非氰浸出.      

内蒙某矿业铜铅锌多金属矿金、银的嵌存状态

该矿床是受断裂构造控制的中温热液矿床。经详细的光、薄片鉴定,认为该矿床矿石组成比较复杂,主要为磁黄铁矿、方铅矿、闪锌矿、毒砂、黄铁矿、银黝铜矿和黄铜矿等,其次还有脆硫锑铅矿、辉银矿、金银矿、脆银矿和辉锑银矿等。对该铜铅锌多金属矿进行了工艺矿物学研究,重点查明伴生金银的赋存状态、嵌布粒度等工艺特征。为确定合理的选矿工艺流程及条件提供依据。     

Thermal treatment of complex sulfide ores in N2 and H2 Atmospheres: A new approach for the extraction of their valuable elements

The thermal treatment of natural sulfidic minerals such as sphalerite, galena, chalcopyrite, and pyrite in an N₂ or H₂ atmosphere was studied to examine the nature of reactions taking place. Such treatments have the potential of avoiding sulfur dioxide production which is associated with the roasting of complex sulfide ores (CSOs). The thermal treatment of CSO concentrates at temperatures less than 1000 °C in a nitrogen atmosphere leads to the decomposition of the pyritic matrix to pyrrhotite and the volatilization of sulfur, galena, and some of the CSOs’ trace elements. Treating the CSO in a reducing atmosphere converted sphalerite to zinc and produced a solid containing Cu^o, Fe^o, and silicoaluminates. Selective dissolution of copper may be achieved by a hydrometallurgical process. Hydrogen sulfide could be reacted with pyrrhotite to form pyrite and hydrogen. A flow sheet is proposed. M.-CH. Meyer-Joly formerly Researcher with Mineral Processing and Environmental Engineering, Institut National Polytechnique de Lorraine K. MALAU formerly Researcher with Mineral Processing and Environmental Engineering, Institut National Polytechnique de Lorraine     

辽宁凤城林家三道沟金矿床地质特征及矿床成因分析

林家三道沟金矿床位于青城子矿化集中区,金矿体呈似层状、脉状产出于大石桥组大理岩与盖县组片岩接触部的片岩中,严格受地层产状和层间构造带控制,并与印支期岩浆侵入体密切相关。矿石中金属矿物以黄铁矿为主,毒砂、砷黝铜矿、磁黄铁矿、黄铜矿、方铅矿、闪锌矿、磁铁矿次之,金以银金矿为特征。矿石呈粒状结构,团块状、浸染状、细脉状、晶洞状和角砾状构造。综合研究认为,矿床属沉积—变质热液叠加成因。