青海某低品位钼矿浮选工艺

青海省某低品位浸染型辉钼矿矿石，原矿钼品位为0.21%，铅品位为0.0049%，针对该低品位钼矿石开展了工艺矿物学研究以及可选性条件实验。采用柴油作钼的捕收剂、水玻璃作为调整剂，经过了一段粗选五段精选二段扫选的浮选工艺流程，所得的钼精矿经检测Pb含量为0.98%，影响其销售价格。针对该含铅超标的钼精矿采用了再磨脱药以及添加抑制铅的抑制剂磷诺克斯相结合的工艺流程，钼精矿的含铅量从0.98%降低至0.074%，钼品位由原矿的0.21%提高到53.95%，钼回收率达到了90.18%，实现了钼的有效回收。      

陕西某含铅钼矿石选矿试验

陕西某含铅硫化钼矿石中的钼铅矿物以原生硫化物为主,共生关系密切、嵌布粒度细微,对该矿石进行了选矿工艺技术条件研究。结果表明,采用一段磨矿、1粗1扫钼铅混浮、钼铅混合粗精矿再磨、3次混合精选、1粗2扫2精钼铅分离、中矿顺序返回流程处理该矿石,最终获得了钼品位为52.32%、回收率为92.50%、含铅4.52%的钼精矿和铅品位为40.98%、回收率为70.42%、含钼0.43%的铅精矿。     

某嵌布特性复杂高钼低铅矿选矿试验研究

西藏某高钼低铅矿石具有回收价值的矿物主要有辉钼矿、方铅矿，辉钼矿粒度悬殊，与石英、黄铁矿、方铅矿等矿物连生或被包裹，嵌布关系较复杂，方铅矿粒度较细，多产出在石英中，现场工业生产采用常规“钼铅全混浮再分离”工艺，存在钼精矿和铅精矿产品互含高、金属回收率低、钼精矿品位较低的特点，试验研究针对该矿石性质特点采用“优先选出部分高品质钼精矿—钼铅混浮—混合粗精矿再磨后精选—钼铅分离”工艺及对钼铅矿物捕收能力强的新型捕收起泡剂酯-22，分别获得钼品位为49.82%高品质钼精矿1和钼品位为45.65%的钼精矿2，两钼精矿钼总回收率为90.91%，所得铅精矿铅品位为46.08%，铅回收率为82.58%，与“全混浮再分离”工艺相比，不仅钼精矿和铅精矿产品互含低，且能获得钼品位为49.82%的高品质钼精矿，经济效益显著，该试验结论在为该矿石现场生产技术改造提供了依据的同时为同类型矿石的回收提供了技术参考。     

青海某含钼铅矿石选矿试验

青海某含钼铅矿石主要为长石-石英脉型、石英脉型、方解石-石英脉及硅化片麻岩型铅钼混合矿石。矿石铅、钼品位分别为3.60%和0.041%，铅、钼氧化程度较低，主要铅钼矿物为方铅矿和辉钼矿，铅、钼矿物是本次试验的主要回收对象。为了绿色、高效回收矿石中的铅、钼，对矿石进行了选矿试验。结果表明，矿石在磨矿细度为 -0.074 mm占70%的情况下，以乙硫氮+柴油为捕收剂，1粗2精1扫混合浮选铅钼，铅钼混合精矿再磨至-0.037 mm占80%的情况下，以硫化钠+磷诺克斯为铅抑制剂，1粗3精1扫抑铅浮钼，最终获得了铅品位为70.30%、铅回收率为86.98%的铅精矿和钼品位为45.68%、钼回收率为84.67%的钼精矿。     

陕西某钼铅多金属矿选矿试验

陕西某钼矿石矿物成分复杂,主要有用矿物有辉钼矿、方铅矿、黄铁矿,并有少量钼铅矿等,钼、铅、硫、金等有回收价值,其中钼、铅主要以硫化物形式存在。为高效开发利用该矿石,进行了选矿试验研究。结果表明,矿石在磨矿细度为-0.074 mm占68%的情况下1次粗浮选选钼、钼粗精矿再磨至-0.038 mm占93.75%的情况下4次精选选钼,1粗1扫钼尾矿1粗1扫2精选铅,铅扫选尾矿1粗2扫2精选硫,所有中矿顺序返回闭路流程处理,最终获得了钼品位为49.24%、钼回收率为89.19%的钼精矿,铅品位为61.69%、铅回收率为83.47%的铅精矿,硫品位为46.32%、硫回收率为68.21%的硫精矿,较好地实现了钼铅硫的综合回收。     

某难选钼矿选矿工艺技术研究

针对黑龙江某难选钼矿进行选矿工艺技术研究。该钼矿含低品位铅、锌,可进行综合回收。有用矿物嵌布粒度细,层状硅酸盐含量高,易泥化。采用钼铅混合浮选—中矿再磨—选锌工艺流程,获得如下试验指标:钼精矿品位45.22%,钼回收率87.04%;铅精矿品位55.46%,含锌3.82%,铅回收率75.12%;锌精矿品位46.120%,含铅0.47%,锌回收率86.23%。     

安徽某矿山铜铅分离选矿试验

铜陵地区某铅锌矿原矿含铜较低、铜矿物嵌布粒度不均匀且与方铅矿结合紧密,造成铅精矿含铜较高,影响铅精矿品位。为降低铅精矿含铜品位,在矿石性质研究的基础上,试验采用铜铅混浮—重铬酸钾抑铅浮铜的工艺流程,最终闭路试验获得了铜精矿含铜15.34%、含铅5.94%、铜回收率为44.49%,铅精矿含铅64.17%、含铜0.42%、铅回收率为90.99%的满意指标;既解决了铅精矿含铜较高的难题,又实现了铜资源的综合回收利用。     

某钼精矿氯化酸浸法降铅提钼试验研究

针对某高铅、低品位钼精矿,采用加活性炭脱药和再磨浮选后,钼精矿中铅含量仍达不到0.3%以下的质量标准,故采用氯化酸浸法降铅,最终使钼精矿中钼含量达到53.8%,铅含量降到0.2%。     

陕西某含铅钼矿石选矿试验研究

某含铅钼矿石工业类型为破碎石英岩(脉)钼矿石,矿石中辉钼矿粒度微细,方铅矿粒度相对较粗,辉钼矿与方铅矿及石英关系密切,与方铅矿呈互相包含关系。本文针对矿石性质,结合探索试验,最终采用钼铅优先浮选工艺处理该矿石,得到钼品位41.23%、回收率82.66%的钼精矿,铅品位56.81%、回收率56.87%的铅精矿。     

河南某钼铅多金属矿综合回收试验研究

针对河南某彩钼铅多金属矿矿石性质,采用优先浮选流程,综合回收了氧化钼、方铅矿和白铅矿。原矿钼品位0.20%、铅品位2.40%时,在磨矿粒度为-0.074 mm粒级占80%,闭路流程最终得到钼精矿产率2.15%、钼品位7.12%、钼回收率76.54%、铅品位60.04%、铅回收率53.12%,铅精矿产率1.01%、铅品位65.62%、铅回收率27.27%。其中钼的总回收率为78.81%,铅的总回收率为80.39%,选矿指标理想。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

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     

China rare earth market review

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,     

New energy vehicle:an opportunity for rare earth magnets

<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     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

Brief news

正China Minmetals Rare Earth Construction of Jianghua Separation Plant is set to complete at the yearend Civil works of Jianghua Separation Plant have been finished and the company is installing and debugging equipments now.It is estimated that construction of Jianghua Separation Plant will be     

Brief news

正Total transactions of rare earth in Rare Earth Ex-change Center of Hunan South Rare and Precious Metal Exchange neared 40 billion yuan from January to October From the opening in January of this year to the end of October,the total transaction of rare earth products in Rare Earth Exchange Center of Hunan South Rare and Precious Metal Exchange neared40 billion yuan.There are 16 varieties including dysprosium oxide and terbium oxide traded on the exchange center,one of the largest trading platforms for rare earth oxides in China.     

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