含易浮云母的复杂铜铅锌矿分离试验研究

某铜铅锌矿属高硫复杂难选多金属硫化矿,铜铅锌矿物之间嵌镶关系极其复杂,原矿中云母和硫含量高,可浮性好,严重干扰铜铅锌矿物的浮选,尤其对铜铅锌精矿的质量影响很大,增加了该铜铅锌矿石的选矿难度。采用优先浮铜—铜精矿脱云母—铅锌硫混浮—铅锌与硫分离的浮选工艺,在铜与铅锌分离的同时消除云母对浮选的影响。当原矿含铜0.63%、铅2.44%、锌2.95%时,获得的铜精矿含铜21.24%、含铅6.08%、含锌4.08%,铜回收率为76.20%;铅锌精矿含铅18.38%、含锌23.32%,铅、锌回收率分别为85.07%、89.32%。     

重晶石型复杂嵌布铜铅锌次生硫化矿的可选性研究

某铜铅锌次生硫化矿含大量重晶石,有用矿物嵌布关系复杂、粒度细,铅氧化率28.32%。矿石中的方铅矿和闪锌矿因夹杂细小铜矿物而自活化,抑制分离浮选困难,常规选矿方法和药剂难以分离出单一铜、铅、锌精矿。试验建议采用粗磨铜铅锌等浮流程,可获得铅+锌品位大于50%的含铜铅锌混合精矿,各金属回收率也较高。混合精矿再用专利冶金方法处理。     

安徽某铜铅锌多金属硫化矿选矿工艺研究

安徽某低品位铜铅锌多金属硫化矿石中锌矿物大多以铁闪锌矿的形式存在,部分硫矿物以磁黄铁矿的形式存在,铁闪锌矿和磁黄铁矿致密连生,嵌布特征复杂,对锌硫浮选分离造成不利影响。针对该矿的矿石特点,在"铜铅锌优先浮选"工艺流程的基础上,结合锌硫磁选分离工艺,不仅回收了铜铅锌,而且实现了锌硫的有效分离。闭路流程试验获得了含铜12.04%、铜回收率45.48%的铜精矿,含铅42.88%、铅回收率80.04%的铅精矿,含锌42.04%、锌回收率84.11%的锌精矿。     

羧甲纤维素浮选分离铅铜混合精矿的试验

我们对佛子冲铅锌铜多金属矿石选矿试验中,应用羧甲纤维素(简称 CMC,下同)分离铅铜混合精矿获得成功。得到了一级品铅精矿、四级品铜精矿,铅铜分离作业回收率分别为99.48%和82.94%。现将有关的几个问题和试验结果介绍如下。一、矿样性质矿样属矽卡岩型铅锌铜多金属硫化矿。     

东谷水—歪脑地区铜铅锌矿床成矿地质条件及综合找矿模型

河南省东谷水—歪脑地区铜铅锌矿床位于太行山东麓铁铜铅锌等多金属成矿带南端,结合区内找矿成果,对区域地质背景、区域地球物理及地球化学特征、矿区地质特征、矿床地质特征进行了分析,结果表明:1矿体受NNE、NWW向断裂、层间顺层破碎带及喀斯特古岩溶的控制,喀斯特古岩溶中的铅矿体呈视层状、透镜状、豆荚状展布,陡倾的NNE向断裂中铅矿体呈脉状、透镜状及囊状展布;2东谷水—歪脑一带铜铅锌矿区含矿岩系为寒武纪碳酸盐岩或藻礁碳酸盐岩、含海相蒸发岩及含油气地层,矿床受地层和构造的双重控制;3矿石以角砾状、块状为主,仅在断裂带重晶石脉中可见脉状、侵染状方铅矿矿石,矿石类型以角砾状、块状、重晶石铅矿为主;4矿区内矿化与岩浆岩无直接联系,铜铅锌矿床附近可能并不存在同成矿期的局部高地热梯度场;5矿区内矿床的区域地质背景、成矿地质特征均与典型的密西西比河谷型(MVT)铅锌矿床相似。根据矿床产出、分布特征,讨论了成矿规律,系统总结了找矿标志,构建了矿区综合找矿模型,并划分了5处找矿靶区。上述分析对于区内进一步开展铜铅锌矿床找矿工作有一定的参考价值。     

澳大利亚某含硫铁铜矿的选矿工艺研究

针对澳大利亚某含硫铁铜矿样, 采用先浮选硫化矿物、后磁选铁矿物的原则工艺, 可在有效降低铁精矿中硫含量的同时综合回收矿石中的铜、硫。在原矿磨至-0.074 mm粒级占70%后铜硫混选, 粗精矿再磨至-0.074 mm粒级占95%后铜硫分离, 铜硫混选尾矿再弱磁选的闭路试验中, 可以获得铜精矿品位19.93%、铜回收率80.35%, 硫精矿品位32.75%、硫回收率41.13%, 铁精矿铁品位71.45%、铁回收率89.44%(铁精矿含硫0.34%)。     

甘肃某多金属硫化矿浮选新药剂研究

摘S要SS为解决甘肃某多金属硫化矿矿石性质变化后精矿产品互含高、硫精矿和尾矿中金属损失等问题,进行了脱硫作业和铜与铅锌分离作业辅助抑制剂T11和TC的试验研究,闭路试验获得了铜精矿铜品位22.78%,含铅+锌14.30%,铜回收率80.60%;铅锌精矿铅+锌品位39.23%,铅+锌回收率175.16%。与现场药剂制度相比,铜回收率及铅+锌回收率基本相当,铜精矿和铅锌混合精矿产率均减小,铜精矿铜品位提高1.01%,铅+锌含量降低2.04%;铅锌精矿铅+锌品位提高2.16%。     

安徽某铁硫铜多金属矿石综合回收试验研究

安徽某含铜铁矿石为典型的多金属伴生矿,矿物间共生密切,嵌布关系复杂。矿石中金属矿物主要为磁铁矿,少量黄铁矿、黄铜矿及磁黄铁矿等;非金属矿物主要为蛇纹石、透辉石及透闪石等。为综合回 收矿石中的有价组分,在条件试验的基础上,采用铜硫混合浮选—铜硫分离—混浮尾矿磁选的工艺流程处理该矿石,全流程试验最终可获得Cu品位22.18%、Cu回收率76.85%的铜精矿,S品位43.29%、S回收率45.71%、 Co品位0.43%、Co回收率45.04%的硫精矿,及Fe品位62.36%、Fe回收率93.09%、含S 0.18%的铁精矿。试验指标良好,伴生组分Co在硫精矿中有效富集,实现了有价金属的综合回收。     

重晶石-石英-萤石型伴生矿选矿试验研究

湖南某重晶石矿与石英、萤石和铅锌矿等伴生,为综合开发利用该矿产资源,对其进行选矿试验研究。矿石中含0.98%的铅锌矿,具有一定回收价值,试验采用硫酸铜、乙基钠黄药优先回收铅锌混合粗精矿,浮选铅锌尾矿则采用水玻璃作石英等脉石矿物抑制剂,十二烷基硫酸钠为捕收剂浮出重晶石精矿。通过混浮铅锌、一粗、一扫和五精重晶石浮选闭路流程,获得了铅锌品位35.49%、产率2.54%的铅锌混合粗精矿,BaSO4品位92.15%、BaSO4回收率94.33%、比重4.3g/cm3的重晶石精矿,以及BaSO4品位仅5.07%的重晶石尾矿,实现了重晶石、铅锌矿与石英等脉石矿物的有效分离。铅锌混合粗精矿可进一步浮选获得合格的铅精矿与锌精矿。     

某复杂低品位铜钼硫多金属矿选矿工艺技术研究

某矿石中铜、钼、硫含量分别0.35%、0.011%、2.38%,属于低品位铜钼硫多金属矿。矿石中矿物种类多,嵌布关系复杂,铜、硫可浮性相近,有效回收利用该矿石较为困难。通过流程方案对比,采用选择性捕收剂BK322,通过钼铜等可浮—铜硫混合浮选工艺流程,闭路试验获得了含铜24.79%、含铜0.76%、铜回收率79.61%、钼回收率72.74%的铜钼混合精矿,含铜13.40%、铜回收率7.62%的铜精矿,以及含硫45.79%、硫回收率72.88%的硫精矿;混合精矿经铜钼分离,最终获得含钼46.12%、钼回收率65.12%的钼精矿;综合铜精矿铜品位23.36%、铜回收率87.20%。     

Current situation and future trend of China rare earth luminescent material industry

<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     

China rare earth market review

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     

Annual Report analysis of Chinese rare earth-related listed companies in 2013

<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     

Market opportunities and challenges for rare earth polishing powder

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     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

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     

Market and recycling of NiMH battery

<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     

China rare earth market review

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     

2014 second batch of rare earth quota released

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矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586