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湖南下寒武统石煤中的镍钼铂族元素的地球化学特征 总被引:8,自引:0,他引:8
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-1300%~-1761%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 相似文献
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湘西北地区下寒武统钼镍矿地质特征及找矿远景 总被引:1,自引:0,他引:1
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。 相似文献
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金堆城钼矿床有价元素的综合回收利用研究 总被引:2,自引:1,他引:2
张培安 《有色金属(选矿部分)》2002,(5):1-4
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。 相似文献
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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。 相似文献
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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。 相似文献
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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。 相似文献
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<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
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《中国稀土信息(英文版)》2014,(6)
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
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YANG Li 《中国稀土信息(英文版)》2014,(6)
<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
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Gao Wei 《中国稀土信息(英文版)》2014,(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
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《中国稀土信息(英文版)》2014,(8)
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
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Bai Wenping 《中国稀土信息(英文版)》2014,(12)
<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
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《中国稀土信息(英文版)》2014,(9)
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
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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。 相似文献
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Chen Zhanheng 《中国稀土信息(英文版)》2014,(5)
<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 相似文献