低品位难选斑岩型铜钼矿浮选试验研究

在对某低品位难选斑岩型铜钼矿进行矿石性质研究的基础上,采用铜钼(硫)混合浮选-混合精矿脱硫精选-钼铜分离的工艺流程,闭路试验可获得含钼43.62%、钼回收率70.41%的钼精矿、含铜24.25%、铜回收率87.14%的铜精矿以及含硫39.30%、硫回收率79.08%的硫精矿。该试验研究结果可以作为开发利用该铜钼矿的技术依据。     

某氧硫混合铜钼矿选-冶联合工艺试验研究

云南某氧硫混合铜钼矿含铜0.328%,含钼0.275%,其中钼氧化率为48%。通过研究,采用优先混合浮选硫化铜钼矿,铜钼混合精矿分离得含铜21.10%的铜精矿和含钼47.50%的钼精矿,混选尾矿用碳酸钠调浆活化后进行浮选,钼的回收率可达到42.09%,但含钼只有0.526%。对浮选出的氧化钼粗精矿用碳酸钠加温浸出,浸出率可达到88.22%,浸出液可进一步加工生产工业用钼酸钙。使用该选-治联合工艺,铜的回收率为70.13%,钼的总回收率可达到76.86%。推荐的选冶联合工艺是回收该氧硫混合铜钼矿的一条有效途径,具有较好的利润前景。     

西藏某低品位铜钼矿选矿工艺

西藏某铜钼矿原矿含铜品位0.28%、钼品位0.022%,硫品位0.60%,铜氧化率31.13%,针对矿石性质,开展了四种浮选流程的试验研究,采用硫化铜钼混合浮选-分离然后浮选氧化铜的原则工艺流程,得到铜品位20.91%,含钼0.24%,铜回收率63.69%的硫化铜精矿;铜品位10.78%,含钼0.47%,铜回收率17.90%的氧化铜精矿;钼品位47.17%,含铜1.21%,钼回收率63.66%的钼精矿,铜总回收率为81.59%,有价元素得到了较好回收。     

某铜钼浮选尾矿浮选试验研究

为了提升铜钼资源利用效率,对某铜钼尾矿开展铜钼再回收利用浮选试验研究。针对该矿石有用矿物品位低,矿物嵌布粒度较细,且铜的氧化率较高、矿石成分复杂的特点,采用"矿石脱泥—粗砂铜钼部分优先浮选—粗精矿再磨精选—铜钼硫混合浮选—混合精矿再磨后铜钼-硫分离—分离尾矿选硫"的浮选工艺流程,从铜、钼含量分别为0.086%和0.011%的原矿,获得铜钼混合精矿1含铜19.05%,含钼4.32%,铜、钼回收率分别为25.57%、49.71%;铜钼混合精矿2含铜2.49%,含钼0.22%,铜、钼回收率分别为3.73%、2.82%,较好地实现了铜钼资源的再回收利用。     

国外某铜钼矿降锌试验研究

国外某铜钼矿含铜0.50%,含钼0.013%,含锌0.22%。冶炼厂对铜精矿含锌要求较高,不能超过4.5%。对该矿石进行了详细的降锌试验研究,通过粗选去活化,精选加强抑制,可以获得含锌符合要求的铜钼混合精矿。铜钼混合精矿中含铜26.31%,铜回收率83.67%,含钼0.41%,钼回收率50.25%,含锌3.93%。     

新疆某低品位钼矿石高效利用选矿试验

新疆某低品位钼矿石钼品位仅0.076%。矿石中除钼外,还伴生含量为0.033%的铜和含量为1.232%的硫。虽然钼、铜、硫主要以辉铜矿、黄铜矿、黄铁矿形式存在,但它们共生关系密切,分离困难。根据矿石性质开展综合回收钼、铜、硫的选矿试验,首先将原矿粗磨至-0.074 mm占85%后进行钼铜硫的混合浮选,然后将钼铜硫混合精矿细磨至-0.043 mm占95%后进行钼铜与硫的分离浮选,最后对钼铜混合精矿进行钼与铜的分离浮选,并在钼铜硫混合浮选过程中使用新型捕收剂GZW101和新型抑制剂GTS、在钼铜分离浮选过程中使用新型抑制剂GLN,最终获得了钼品位为47.03%、钼回收率为73.20%的钼精矿以及铜品位为14.89%、铜回收率为77.26%的铜精矿和硫品位为54.26%、硫回收率为88.94%的硫精矿,从而为该矿石的高效利用提供了依据。     

某复杂低品位铜钼硫多金属矿选矿工艺技术研究

某矿石中铜、钼、硫含量分别0.35%、0.011%、2.38%,属于低品位铜钼硫多金属矿。矿石中矿物种类多,嵌布关系复杂,铜、硫可浮性相近,有效回收利用该矿石较为困难。通过流程方案对比,采用选择性捕收剂BK322,通过钼铜等可浮—铜硫混合浮选工艺流程,闭路试验获得了含铜24.79%、含铜0.76%、铜回收率79.61%、钼回收率72.74%的铜钼混合精矿,含铜13.40%、铜回收率7.62%的铜精矿,以及含硫45.79%、硫回收率72.88%的硫精矿;混合精矿经铜钼分离,最终获得含钼46.12%、钼回收率65.12%的钼精矿;综合铜精矿铜品位23.36%、铜回收率87.20%。     

西藏某铜钼混合精矿分离试验研究

西藏某铜钼矿是以铜为主伴生钼的低品位铜钼矿,针对该铜钼混合精矿的性质特点,通过试验确定了铜钼分离的合适的工艺参数,经过一次粗选一次扫选四次精选的闭路试验,获得含Cu 19.05%、含Mo 0.293%,Cu作业回收率99.82%的铜精矿,含Mo 48.24%、含Cu 1.13%,Mo作业回收率83.20%的钼精矿,铜钼得到了有效分离。     

江西某难选铜钼矿浮选试验研究

对江西某难选铜钼硫多金属矿进行了浮选试验研究.采用铜钼等可浮?强化选铜?尾矿选硫的工艺流程,可获得铜钼混合精矿铜品位18.27％、钼品位0.45％,铜回收率81.03％、钼回收率59.83％,以及硫精矿品位47.32％、硫回收率85.58％的选别指标,实现了铜钼硫的综合回收.     

内蒙古某低贫难选钼矿选矿试验研究

针对内蒙古某低贫含铜钼矿矿石性质,确定了"一段粗磨铜钼混合浮选-混合粗精矿再磨-铜钼分离"的浮选方案.采用该浮选方案及合理的选别条件,对含钼为0.066%含铜0.03%的钼原矿选别,获得钼精矿品位51.68%,钼回收率74.33%,铜精矿品位12.60%的较好指标.     

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