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1.
广西某铅锌矿选矿指标不理想,为了给选矿工艺优化研究提供依据,首先开展了系统的工艺矿物学研究,主要内容包括化学成分分析、X射线衍射分析、扫描电镜能谱分析、光学显微镜分析、矿物组成分析、主要元素的赋存状态研究、重要矿物的嵌布特征及在不同磨矿细度下的解离特征研究等。研究表明,该矿石中目的矿物方铅矿粒度较细,闪锌矿粒度相对较粗,但粒度分布不均匀,且矿物间的嵌布关系复杂,方铅矿和闪锌矿较难实现单体解离,这是影响该矿选别指标的主要因素。  相似文献   

2.
凡口铅锌矿是一个较富的矿床,矿石品位高,储量大。原矿含铅5%,锌11%,硫23%左右。主要有用矿物为方铅矿,闪锌矿和黄铁矿,嵌布粒度细,尤其是方铅矿以极细粒浸染于黄铁矿和闪锌矿。脉石矿物中有方解石、白云石、石英等。制定某一类型矿石的选矿流程,首先需要正确确定其矿物种类,矿物性质和矿物共生体的复杂程度。在此基础上,选矿工作者就可决  相似文献   

3.
云南某金多金属矿的工艺矿物学研究   总被引:1,自引:0,他引:1  
为配合云南某多金属矿的矿石可选性试验,对该矿进行了详细的工艺矿物学研究。查明了矿石的矿物组成,重要矿物的赋存状态、嵌布特征、粒度组成、解离度特征以及影响选矿回收指标的矿物学因素等。研究表明,矿石中金、银矿物嵌布粒度细且与多种矿物共生密切,除了与黄铜矿、方铅矿、黄铁矿等硫化物共生外,还与磁铁矿、菱铁矿存在紧密嵌布关系,因此加强回收铁矿物中的金、银是提高回收率的关键。此外,黄铜矿、方铅矿和闪锌矿分别是铜、铅、锌回收的目标矿物,磁铁矿和菱铁矿是可综合回收的主要铁矿物。  相似文献   

4.
为挖掘某高硫铅锌矿选矿生产技术指标提升的方向及潜力,对入选原矿进行了化学成分、矿物组成、嵌布特征等矿石性质研究,测定了精矿产品及尾矿中主要目的矿物的单体解离度和粒度分布等。结果表明,矿石中目的矿物方铅矿、闪锌矿及黄铁矿的嵌布粒度粗细不均匀,且共生关系密切、包裹关系复杂,属于难解离矿石;精矿互含高是导致精矿质量不高及金属回收率低的主要因素,方铅矿损失的主要原因是单体解离不充分,闪锌矿损失的主要原因除单体解离不充分外,还受到浮选分离工艺的严重影响。并在此基础上,针对性地提出了降低选矿处理量、强化细磨分级、优化药剂制度、合理调整矿浆浓度等改进措施及建议,为提升选矿技术指标提供了技术参考。  相似文献   

5.
为给西藏多才玛铅锌矿详查阶段矿产评价提供依据,对其进行了详细工艺矿物学研究。研究结果表明:该矿石含Pb为4.21%、Zn为2.81%,银、镉、硒、碲和铊分别为27 g/t、0.017%、0.002%、0.03%、0.023%,可进行综合回收利用。铅主要以方铅矿的形式存在,锌主要以闪锌矿的形式存在。方铅矿、闪锌矿为主要回收目的矿物。铅、锌矿物嵌布关系复杂,与其他矿物紧密接触,分离较困难。方铅矿嵌布粒度相对较粗,有利于选矿回收,而闪锌矿嵌布粒度较细,-0.02 mm粒级以下含量高达22.07%,选矿难度大,需要进行细磨工作,才能提高回收率。此外,脉石矿物主要为方解石、石英,具有易磨碎、易泥化等特点,将给铅、锌矿物分选带来不利影响。   相似文献   

6.
研究司家营铁矿原生地矿石的可磨可选性分布特点,有利于合理配置采场的矿石资源。通过制定可磨可选性试验标准和判定标准,选取大量的矿石样品进行可磨可选性试验,发现如下规律:Ⅰ号矿体整体上可磨可选性较好,有用矿物嵌布粒度较粗,矿石质量好;Ⅲ号矿体中部和西南部可磨度相对较好,有用矿物嵌布粒度较粗,矿石质量较好,北部可磨度较差,可选性好,有用矿物嵌布粒度较细,矿石质量一般,南部可磨度较好,可选性较差,有用矿物嵌布粒度较细,矿石质量一般;Ⅳ号矿体北部和南部可磨可选性较差、有用矿物嵌布粒度较细,矿石质量较差,中部可磨度较差,可选性较好,矿石质量一般。从采场目前矿体揭露的情况来看,氧化矿中好磨好选的矿石占56.4%,原生矿中好磨好选的矿石占87.2%。对选矿生产过程中稳定生产能力和优化生产指标具有一定的指导意义。  相似文献   

7.
为高效利用锡铁山深部(-2 702 m)铅锌矿石资源,鉴于工艺矿物学对矿石浮选性能研究的重要指导作用,利用X射线衍射(XRD)分析仪和显微镜照相等测试分析技术,对该矿石进行了详尽的工艺矿物学研究,并探究了矿石的浮选特性。结果表明,矿石中金属矿物主要是黄铁矿,其次为闪锌矿和方铅矿,还可见少量的磁铁矿、褐铁矿、黄铜矿、铁闪锌矿、磁黄铁矿,可综合回收的有价矿物为铅、锌、硫及伴生金银,脉石矿物则以透辉石居多,其次是石英、方解石、绿泥石;方铅矿和闪锌矿分别呈中-细粒及中粒嵌布特征,大部分有用矿物的嵌布粒度在74μm以上,对矿物之间的解离十分有利。浮选试验结果表明,在较粗的磨矿细度下,即可实现矿石中主金属铅锌的高效浮选,实验室利用现有生产工艺处理该矿石,可获得理想的选矿综合指标,试验结果可为生产现场进行深部矿石的选矿生产提供技术依据。  相似文献   

8.
采用X射线衍射(XRD)和扫描电镜-能谱(SEM-EDS)等方法研究某地含银铅锌矿的工艺矿物学性质,查清矿石的化学组成,并对该区矿石中银矿物的组成、嵌布特征和赋存状态进行分析,通过单浮选试验确定最佳磨矿细度。研究结果表明,方铅矿和闪锌矿为银的主要载体矿物,且银矿物以较细的粒度嵌布于方铅矿和闪锌矿中,磨矿细度以-74μm占75%为最佳,该研究可为含银铅锌矿的综合回收提供指导。  相似文献   

9.
青海江里沟铜钨矿主要含矿岩石是阳起石石榴石矽卡岩。对铜钨矿石中有益组分铜、钨的赋存状态、矿石矿物粒度、嵌布特征、矿石组成等进行了详细研究,划归了矿石工艺类型,分析了矿石工艺性质与选矿的关系,提出了矿石矿物粒度是影响选矿指标的重要因素。  相似文献   

10.
青海江里沟铜钨矿主要含矿岩石是阳起石石榴石矽卡岩。对铜钨矿石中有益组分铜、钨的赋存状态、矿石矿物粒度、嵌布特征、矿石组构等进行了详细研究,划归了矿石工艺类型,分析了矿石工艺性质与选矿的关系,提出了矿石矿物粒度是影响选矿指标的重要因素。  相似文献   

11.
正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium  相似文献   

12.
正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared  相似文献   

13.
<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy  相似文献   

14.
<正>Rare earth luminescent material is one of the most important application sectors of rare earths.China enjoys the exceptional advantage to develop rare earth luminescent material for its abundant rare earth resources.After several decades'endeavor,China's rare earth luminescent material industry,headed by rare earth phosphor for lamp and LED and high efficient rare earth energy-saving light source,has been gradually developed into a scale industry.China has become a major production base of rare earth phosphor for lamps and rare earth  相似文献   

15.
正June 1~10,2014Rare earth market remained weak.Quoted price of rare earth products was similar to that in May.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,polishing powder and ceramic industries remained inactive.Demand from downstream industry was soft.Consumers purchased on their needs.Suppliers had strong intention to sell.Prices of rare earth products  相似文献   

16.
正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to  相似文献   

17.
<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH  相似文献   

18.
<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new  相似文献   

19.
正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of  相似文献   

20.
正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,  相似文献   

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