湖南下寒武统石煤中的镍钼铂族元素的地球化学特征

从岩石学、矿床学、微量元素地球化学、稳定同位素方面对湖南下寒武统石煤中镍、钼、铂族元素为主的伴生元素的来源和富集成因进行了研究研究认为，含矿岩系中发育的硅岩是一种喷流岩；有海底喷流作用直接堆积的金属硫化物筒状富矿体；矿石中各种胶状结构发育；矿床具两套成矿系统；微量元素Ｓｅ，Ａｓ，Ｂａ高地壳丰度数倍至数万倍；矿层中硫同位素值为－１３００％～－１７６１％等证实了湖南下寒武统石煤中以镍、钼、铂族元素为主的伴生元素，其来源和富集并非陆源搬运沉积，而是与海底喷流作用有关     

湘西北地区下寒武统钼镍矿地质特征及找矿远景

湘西北钼镍矿产于下寒武统牛蹄塘组(木昌组)黑色页岩岩系中,现已发现多个矿床(点),研究其成矿地质地球化学特征和矿层特点,对指导寻找湘西北钼镍矿具有重要意义。     

金堆城钼矿床有价元素的综合回收利用研究

分析金堆城钼矿床中的有价元素 ,介绍钼、硫、铜、铁的综合回收利用成功技术 ,提出钴、铼、硒、镍、镓、钛、银等有价元素的回收研究方向。     

湘西北黑色岩系中含贵金属镍钼矿成矿探讨

湘西北地区下寒武统黑色岩系属于海侵体系域之还原环境的缺氧沉积。镍钼矿床主要产于木昌组底部的含磷岩系中。含矿岩系具有热水沉积和生物化学沉积的地球化学特征。成矿是在有机质（生物地球化学）参与下发生,并有热水沉积的加入。矿床是微生物成矿和热水沉积双重作用的结果。     

福建某钨钼矿石选矿工艺研究

福建某钨钼矿矿石中有用矿物以辉钼矿、黑钨矿为主,并伴生有黄铁矿。为了给该矿产资源的开发利用提供依据,对其进行了选矿试验研究。试验经比较,采用优先浮钼-浮钼尾矿浮硫-重选回收黑钨矿的工艺流程,获得了含钼51.31%,回收率为80.77%的钼精矿,含钨63.80%,回收率为68.31%的钨精矿以及含硫41.54%,回收率为97.67%的硫精矿,使矿石中的有价元素得到了较好的综合回收。     

嵩县探获一大型斑岩型钼矿床

<正>河南省地矿局第三地质勘查院承担的嵩县雷门沟矿区中西段钼矿详查项目全面完成。该项目共圈定大小矿体92个,估算钼金属量63.6万t,平均品位为0.079%,提交一处以钼为主、伴生元素硫的可供综合利用的大型斑岩型钼矿床。雷门沟矿区中西段钼矿详查项目为河南省地质勘     

含铀硫钼矿综合利用的探索

硫钼矿在矿石中的品位往往比最具有工业意义的辉钼矿还高。但硫钼矿系非品质矿物,以胶状集合体产出,粒度微小,而且在单矿物中的钼含量仅为15～20％。因此,用一般选矿方法不能获取合格精矿。然而硫钼矿常与多种有用金属矿物共生,尤其是铀、钼常在同一地质环境内出现,在内生条件下形成铀钼矿床。所以,在其提铀过程中考虑综合回收钼是具有现实意义的。本文就某地三个矿区四个含铀硫钼矿矿样的综合回收工艺进行了探讨。试样的物质成分列于表1。     

湘西北镍钼矿床成矿特征与成因

湘西北镍钼矿床产于寒武系下统木昌组黑色岩系底部的含磷岩性序列中。含矿岩系具有热水沉积和生物化学沉积的地球化学特点,成矿是在有机质（生物地球化学）参与下发生的。矿床是微生物成矿和热水沉积双重作用的结果。     

内蒙古某低品位铜镍矿石选矿试验

为确定内蒙古某低品位铜镍矿石的开发利用工艺,在工艺矿物学研究的基础上进行了选矿工艺研究。结果表明,矿石中的金属矿物主要为黄铁矿、紫硫镍矿、黄铜矿,脉石矿物主要有斜长石、辉石、角闪石,橄榄石及绿泥石少量。紫硫镍矿多以细粒状伴生在黄铜矿附近,有时与黄铜矿、黄铁矿或单独以几何状充填在脉石矿物骨架中,节理清晰,粒度以中细粒为主,一般为0.30~0.003 mm。黄铜矿多单独产于脉石中,部分与黄铁矿或紫硫镍矿共生,与紫硫镍矿共生关系密切,以他形粒状为主,以中细粒为主,一般为0.30~0.03 mm。矿石在磨矿细度为-0.074 mm占90%的情况下,采用1粗2精1扫优先浮铜,再2粗2精1扫浮镍流程处理,最终获得铜品位为14.76%、铜回收率为82.15%的铜精矿,镍品位为5.86%、镍回收率为84.27%的镍精矿。铜精矿、镍精矿均达到Ⅴ级品质量标准。     

紫硫镍铁矿的浮选

紫硫镍铁矿原生粒度较大，被认为是最易浮选的硫化铜镍矿物。本文从紫硫镍铁矿及其伴生矿物的矿物学特性及紫硫镍铁矿的选矿工艺特性入手，分析了影响紫硫镍铁矿可浮性的因素，指出了时以紫硫镍铁矿为主的硫化铜镍矿的选别，在浮选技术上仍有潜力可挖。     

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     

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     

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     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。