从铜老尾矿中综合回收有价元素的研究

针对某堆积老尾矿有价矿物种类繁多、嵌布粒度细,解离困难,含泥高的特性,制定了磨矿擦洗-先硫后氧原则技术方案,通过优化浮选条件及筛选药剂等措施克服不利因素,实现了目的矿物有效回收,实验室试验获得总铜精矿铜品位11.35％、铜回收率为51.42％,并回收了金银等有价元素,该研究为难选堆积铜尾矿综合利用提供了技术支撑.     

黄金矿山尾矿的组成、危害及资源化利用技术

黄金矿山尾矿的大量排放与堆积不仅浪费资源和占用土地,还给人类和环境造成一定的危害。黄金尾矿中不仅含有金、银、铜和铅等有价成分及石英和长石等非金属矿物,还含有大量的硅铝氧化物和硅酸盐类物质,具有回收利用价值和广泛的工业用途。从黄金矿山尾矿的组成及危害入手,综述了黄金尾矿资源化利用的两个方向:一是利用焙烧、浸出和浮选等方法回收尾矿中的有价成分;二是对尾矿进行加工处理生产各种工业材料。最后总结了目前黄金尾矿资源化利用存在的问题和未来技术发展方向。      

内蒙金峰铜业铜转炉渣选矿生产实践

对铜转炉渣进行处理,回收有价资源,采用一段磨矿、优先浮选铜矿物、浮选尾矿磁选回收铁矿物的工艺流程,获得铜精矿品位22.28%、铜回收率90.64%,还综合回收铁资源。     

某选铜尾矿的工艺矿物学研究

为查明某选铜尾矿的综合利用价值,对其进行了工艺矿物学研究。采用了显微镜鉴定、化学分析、X射线衍射分析、扫描电镜能谱分析等手段,查明了某地铜尾矿矿物组成,主要矿物的粒度特征和嵌布特征。结果表明,该尾矿的主要有价元素为铜、铁和钼且其品位分别为0.086%、3.25%和0.011%,对应的回收矿物为黄铜矿、磁铁矿-磁赤铁矿和辉钼矿的相对含量分别为0.17%、0.8%和0.02%。工艺矿物学的研究,对该尾矿的开发利用提供了科学依据。     

铜钼浮选尾矿综合回收钨的选矿试验方案研究

某铜钼矿浮选后的尾矿中钨以白钨矿、钼钙矿形式存在,含钨品位仅0.082%。根据尾矿的矿石性质,试验探索了联合工艺磁选-浮选流程、磁选-重选流程对钨矿物回收的可能性,研究结果表明:磁重联合流程能有效的回收钨矿物,可获得钨精矿含钨品位36.13%,钨回收率60.29%的良好指标。实现了对该尾矿中钨有价元素的综合回收。      

大洋热液沉积物选矿尾矿工艺矿物学研究

对某航段航线获取的大洋热液沉积物选矿尾矿进行了系统的工艺矿物学研究。该尾矿中有价金属元素铜损失严重,含铜为6.06%。铜矿物是以氯铜矿为主,另有微量的硫化铜矿物,其中氯铜矿多以单体形式损失,硫化铜矿物以细粒、微粒包裹体形式赋存在滑石等脉石中。尾矿中的铜经浮选—重选回收效果差,需采用冶金方法对其进行有效的回收。     

武山铜矿老尾矿资源回收的试验研究

根据武山铜矿老尾矿的矿物特性，采用浮选法进行有价元素的回收试验，为实现老尾矿库资源回收提供了选矿技术指导，获得较好的经济效益和社会效益。     

内蒙古某浸金尾矿的综合利用研究

内蒙古某浸金尾矿中含有铜、铅、锌等有价元素,为了充分利用矿产资源,对该浸金尾矿进行了选矿试验研究。结果表明,新型调整剂FL3能够去除浸金尾矿中对铜、锌矿物有强烈抑制作用的CN-,活化被CN-抑制的有用矿物,实现铜、铅、锌的综合回收。     

某铜硫砷锡多金属矿选矿工艺研究

针对某含铜硫砷锡多金属矿矿石的工艺矿物学特征,采用"混合浮选回收硫化矿物-分级重选回收锡石-脱泥浮选回收细粒锡石"工艺流程,综合回收铜、硫、砷、锡等有价金属。硫化矿混合精矿采用组合抑制剂CaO+FN有效分离铜砷,得到砷含量小于0.5%的铜精矿,采用阶段分级重选处理硫化矿,浮选尾矿得到锡精矿、可弃尾矿和进入脱泥浮选作业的-0.053 mm摇床尾矿。全流程闭路试验获得了良好的试验结果,为矿山开发建设提供了可行性依据设计建厂依据。     

某尾矿资源化处置与综合利用研究

为解决某尾矿堆存和对环境潜在的污染问题,对该低品位尾矿进行了资源化处置与综合利用技术研究。根据尾矿工艺矿物学研究结果,进行了可利用有价元素及有用矿物综合回收研究、尾矿深度除杂试验研究、多功能矿物硅肥的制备技术研究。确定了适合该尾矿性质的"浮磁重梯次回收有用矿物-尾矿制硅肥"的工艺技术路线,在回收利用有价元素基础上,使难利用的尾矿资源变成了铜精矿、硫钴精矿、铁精矿、云母精矿与硅肥产品,实现了尾矿资源化及减量化。     

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