新疆某铜镍尾矿综合利用选矿试验

新疆某铜镍尾矿中尚含有0.2%左右的镍、0.1%左右的铜,同时还含有17%左右的铁和3%左右的硫。镍主要以镍黄铁矿形式存在,铜主要以黄铜矿形式存在,铁主要以磁铁矿形式存在,硫主要以磁黄铁矿和黄铁矿形式存在。为了给该尾矿中这些有价成分的综合回收提供依据,对该尾矿进行了再选试验。结果表明：采用铜镍浮选-硫浮选-铁磁选-磁选精矿再浮选脱硫的工艺流程,并在铜镍粗选时采用旋流喷射浮选柱、在铜镍精选前和磁选精矿脱硫前采用再磨手段,最终可获得铜、镍品位分别为1.21%和2.72%,铜、镍回收率分别为12.30%和16.59%的铜镍混合精矿,以及铁品位为65.12%、铁回收率为26.96%的铁精矿和硫品位为35.73%、硫回收率为87.54%的硫精矿。     

浮选—磁选联合工艺处理新疆某铜镍矿

以新疆某硫化铜镍矿为研究对象,采用铜优先浮选—铜优先浮选铜精矿磁选—铜优先浮选尾矿铜镍混合浮选联合流程,最终得到Cu品位25.43%、回收率52.08%、Ni品位0.19%、MgO含量2.32%的铜精矿和镍品位3.57%、镍回收率81.55%、含铜2.53%的铜镍混合精矿;全流程铜总回收率90.77%,镍总回收率82.10%。结果表明,该流程具有铜精矿品位高、镍损失率低、铜镍回收率高的优点。      

广西某低品位铜镍矿选矿试验研究

广西某低品位铜镍矿含铜0.11%,含镍0.18%,铜矿物主要为硫化铜,镍矿物为镍黄铁矿。试验采用浮选—磁选联合工艺流程,在进行了详细的条件试验下,获得了较好的选矿指标。铜镍精矿产率1.83%,品位:铜4.81%、镍7.34%、钴0.31%、银230.60 g/t;回收率:铜88.69%、镍80.12%、钴55.76%、银78.75%。     

新疆某低品位铜镍矿选矿试验研究

新疆某铜镍矿含铜0.26%,含镍0.39%,采用预先脱除滑石—铜镍混合浮选—铜镍分离的浮选工艺流程,获得了较好的选矿指标。混合精矿含铜5.62%、含镍8.18%、铜回收率76.16%、镍回收率75.75%,铜精矿含铜20.58%、铜回收率66.38%,镍精矿含镍10.46%、镍回收率73.80%。     

江西某铜硫钨多金属矿选矿工艺研究

江西某铜硫钨多金属矿是我国大型的矽卡岩型白钨矿床,含Cu 0.11%、S 2.95%、WO30.75%,其主要金属矿物是黄铜矿、磁黄铁矿和白钨矿。通过多种选矿工艺流程探讨,确定采用磁选脱硫—铜硫混合浮选－白钨浮选工艺流程产出硫精矿、铜精矿及白钨精矿,获得的闭路试验指标为：硫精矿含S 30.16%,回收率77.58%;铜精矿含Cu 18.28%、回收率76.83%;白钨精矿含WO3 66.04%,回收率81.67 %。     

广西某低品位铜镍矿石选矿工艺研究

广西某低品位铜镍矿石含铜0.25%、含镍0.43%,镍主要以镍黄铁矿形式存在,铜主要以黄铜矿形式存在,铜、镍矿物均有一定程度氧化且关系密切。为了给该矿石的开发利用提供依据,对其进行了选矿工艺研究。通过对优先浮铜再浮镍方案、铜镍混合浮选方案、铜镍混合浮选再分离方案以及磁选-铜镍混合浮选方案的对比,决定采用铜镍混合浮选方案处理该矿石。按该方案进行详细的试验研究,结果表明,在-0.074 mm占74%的磨矿细度下,以碳酸钠为矿浆调整剂、丁黄药为捕收剂、2号油为起泡剂,经1粗选2扫选2精闭路浮选,可获得铜品位为5.77%、镍品位为8.31%、铜回收率为86.33%、镍回收率为76.60%的铜镍混合精矿。     

新疆某低品位难选铜镍矿石选矿试验

新疆某低品位难选铜镍矿石铜、镍品位分别为0.23%和0.69%,现场采用预选脱除滑石—铜镍混合浮选再分离铜流程获得铜精矿和铜镍混合精矿,铜镍回收率较低。为给现场工艺流程改造提供依据,进行了选矿试验研究。结果表明:在磨矿细度为-0.074 mm占80%条件下,以六偏磷酸钠+CMC为抑制剂、硫酸铜为活化剂、Z-200+J622为捕收剂,经1粗2精1扫铜镍混合浮选,铜镍混合精矿经3次铜精选,获得了含铜18.08%、铜回收率52.17%的铜精矿和含铜2.81%、含镍16.25%、铜回收率41.73%、镍回收率81.78%的铜镍混合精矿。与现场生产指标相比,铜、镍回收率分别提高了9.67和3.45个百分点,浮选指标明显得到改善。     

某富含蛇纹石的低品位难选铜镍矿选矿工艺研究

针对某铜镍矿铜镍品位低,铜镍矿物嵌布粒度微细,共生关系复杂,蛇纹石含量高等特征,开展了选矿工艺试验研究。试验结果表明,采用预先脱除脉石-铜镍混合浮选流程,通过对含Ni 0.51%、含Cu 0.20%、含Co 0.02%的原矿进行选择性磨矿,利用MIBC预先脱除部分易浮脉石,碳酸钠作矿浆pH调整剂,CMC作MgO脉石的抑制剂,硫酸铜和丁基黄药分别作铜镍矿物的活化剂和捕收剂,全流程浮选闭路试验获得了含Ni 7.78%、Cu 2.91%、Co 0.24%,回收率分别为Ni 72.98%、Cu 66.57%、Co 51.29%的铜镍混合精矿。该工艺流程获得了较好的选别效果,实现了铜、镍、钴的有效回收。     

某复杂铜镍硫化矿选矿试验

针对新疆某复杂铜镍硫化矿进行了铜、镍回收的试验研究。通过预先浮选滑石-铜镍混选-铜镍分离工艺和铜镍混选-铜镍分离工艺对比试验,最终确定采用铜镍混选-铜镍分离工艺流程回收铜和镍。实验室闭路试验获得指标：铜精矿含铜20.19%,含镍0.75%,铜回收率66.09%;镍精矿含镍6.36%,含铜0.95%,镍回收率80.43%。     

某复杂铜镍矿的选矿试验研究

某铜镍多金属矿含铜0.39%, 含镍0.49%。为综合回收各有用矿物, 采用“铜镍混合浮选-再磨分离”流程进行了详细的选矿工艺研究。闭路试验获得了铜品位19.02%、铜回收率60.47%的铜精矿, 镍品位4.78%、镍回收率87.43%的镍精矿。     

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。