某含钴氧化铜矿选矿试验研究

某含钴氧化型铜矿含铜3.22%、含钴0.045%, 采用先浮硫化矿后浮氧化矿原则流程, 进行了实验室验证试验及扩大连选试验研究。实验室验证试验获得了铜品位51.52%、钴品位0.138%的硫化铜精矿和铜品位19.53%、钴品位0.437%的氧化铜精矿; 扩大连选试验获得了铜品位45.11%、钴品位0.154%的硫化铜精矿和铜品位12.31%、钴品位0.261%的氧化铜精矿; 铜总回收率大于80%, 钴总回收率大于55%。研究成果可为该矿石工业应用工程设计提供依据。     

新疆某伴生铜钴矿降砷回收工艺研究

对新疆某含砷低品位铜钴矿进行了降砷选矿工艺试验研究,并对伴生钴进行了富集回收探索研究。通过流程及浮选药剂条件试验,确定在-74μm 80%的磨矿细度条件下,采用优先浮选铜、抑制剂抑砷、尾矿回收伴生钴工艺,得到了铜品位24.29%、铜回收率83.16%、As品位低于3‰的铜精矿产品,得到钴品位4.72‰、回收率58.04%的钴硫精矿产品。     

某铁尾矿中硫化矿物的综合回收试验研究

为了有效利用某铁尾矿中的铜、钴元素, 采用铜-硫(钴)依次优先浮选工艺进行了综合回收试验研究。最终获得了铜品位为27.42%、回收率90.93%的铜精矿和钴品位为0.29%、回收率为94.88%的含钴硫铁矿。     

赞比亚某铜钴矿地质特征及选矿工艺技术研究

本文针对赞比亚某铜钴矿进行了地质形貌特征分析,以及工艺矿物学研究,在其基础上进行了详细的选矿试验研究。通过使用高效选择性捕收剂BK404,采用优先选铜-再选钴的工艺流程,最终获得小型闭路试验结果为：铜品位31.48%%,铜回收率90.23%的铜精矿和钴品位1.46%,钴回收率42.00%的钴精矿。     

四川某浸染型铜多金属矿浮选新工艺试验研究

四川某铜多金属矿属于细粒浸染型铜、钼、钴、铁多金属共生矿,针对选厂钴回收率较低的现状,进行了铜钼钴混合浮选新流程的条件试验和闭路试验研究。试验结果表明,新流程小型闭路试验可获得铜精矿含铜品位24.91%,铜回收率93.45%,钼精矿含钼47.08%,钼回收率78.63%,钴精矿含钴0.41%,钴回收率84.03%的优异指标。与原生产流程相比,铜精矿中铜品位及回收率分别提高了1.77及1.39个百分点,钼精矿中钼的回收效提高了2.66个百分点,钴精矿中钴回收率提高了15.75个百分点。     

复杂铜钼钴铁多金属矿高效分离试验研究

某铜钼钴铁多金属矿是一种典型复杂难分离多金属共生矿石。在工艺矿物学研究的基础上,通过工艺流程对比,试验最终采用"铜钼混合浮选—铜钼分离—混合浮选尾矿浮钴—浮钴尾矿弱磁选铁"流程,配合使用专门研究的铜选择性抑制剂WY-07分离铜钼,获得了合格产品:铜精矿铜品位21.25%、铜回收率93.39%;钼精矿钼品位46.78%、钼回收率45.78%;钴精矿钴品位0.47%、钴回收率56.87%;铁精矿铁品位63.65%、铁回收率37.54%。     

河南某铜矿石铜钴选矿回收试验

河南某铜矿石铜品位1.50%,钴品位0.14%,均具有回收价值。铜主要以黄铜矿的形式存在,钴主要赋存于硫钴矿中,硫化态的铜、钴分别占铜、钴总金属量的98.00%、95.18%,嵌布粒度较粗,且铜、钴关系密切。为充分利用该资源中的铜、钴,分别采用优先浮选和混合浮选原则流程进行铜、钴选矿回收试验。结果表明,以石灰+氰化钠抑制钴进行优先浮选铜再浮选钴试验,可以得到产率3.52%、铜品位30.82%、回收率73.43%的铜精矿和产率2.94%、钴品位1.98%、钴回收率41.81%的钴硫精矿,损失在尾矿中的钴高达15.90%;原矿磨矿至-0.075 mm 75%进行1粗3扫铜钴混合浮选,粗精矿再磨至-0.038 mm 90%进行铜、钴分离浮选,最终可获得铜精矿产率4.88%、品位27.41%、回收率89.16%和钴硫精矿产率9.88%、钴品位1.14%、钴回收率80.70%的良好指标,且损失在尾矿中的钴也较优先浮选低。因此选择混合浮选处理该铜矿石较为合适,可实现铜、钴的综合回收,对最终确定选别流程具有参考价值。     

某含镍多金属矿选矿试验研究

青海省某大型镍多金属矿含镍0.73%、含铜0.16%、含钴0.029%,脉石以蛇纹石、绿泥石、辉石和滑石为主。在对矿石进行工艺矿物学研究的基础上,进行了充分的浮选条件试验,采用一粗两精三扫的闭路流程处理该矿石,最终可以获得镍品位为8.09%、镍回收率为79.37%、铜品位为1.52%、铜回收率为73.63%、钴品位为0.28%、钴回收率为73.89%的浮选精矿。     

四川某铜矿选矿试验研究

以四川某地铜矿为研究对象,依据其矿石性质,采用优先浮选工艺流程回收铜、伴生硫钴矿物,闭路试验可获得Cu品位24.57%、回收率97.06%的铜精矿,Co品位0.31%、回收率33.30%的硫钴精矿。达到了对铜、钴等矿物综合回收的目的。     

赞比亚瑞娜铜矿选矿试验工艺研究

以赞比亚瑞娜铜矿作为选矿试验研究对象,通过浮选流程方案比较,最终确定采用铜钴优先工艺流程进行浮选试验,通过捕收剂种类用量、石灰用量、磨矿细度、浮选时间、开路和闭路多组试验,在磨矿细度为-74μm占55%,铜粗选、扫选总浮选时间为10 min,铜精选时添加石灰的用量为300+100 g/t参数条件下,浮选闭路试验获得了铜品位为25.02%、铜回收率为95.95%的铜精矿,钴品位为0.23%、钴回收率为41.07%的钴精矿,较好解决了瑞娜矿体结合相矿石中铜、钴的回收率难题,为多金属选矿提供了重要的技术支撑。     

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