四川某低品位硫化铜镍矿选矿试验研究

四川某低品位铜镍矿含铜0.18%、含镍0.43%,脉石以蛇纹石、滑石类的含镁矿物为主。在对矿石进行充分的工艺矿物学研究的基础上,针对性地选用脉石矿物的有效抑制剂WL-001,在实验室不预先脱泥的条件下,采用1粗2扫4精铜镍混浮、1粗1扫3精铜镍分离、中矿顺序返回闭路流程处理该矿石,可以获得铜品位20.11%、含镍0.67%、铜回收率55.86%的铜精矿和镍品位5.57%、含铜0.60%、镍回收率73.96%的镍精矿。     

新疆某铜镍硫化矿铜镍回收试验

新疆某铜镍硫化矿石为矿物分布不均匀、粒度粗细不等、镶嵌关系复杂、并伴生有金的低品位原生铜镍硫化矿石。为高效回收矿石中的铜、镍,采用铜镍混浮再分离流程对该矿石进行了选矿试验研究。结果表明,在磨矿细度为-0.074 mm占70%的情况下,采用1粗1扫3精铜镍混浮、1粗1扫2精铜镍分离、中矿顺序返回流程处理该矿石,最终获得了铜品位为22.36%、铜回收率为65.33%、含金115.00 g/t、金回收率为63.94%的铜精矿和镍品位为6.11%、镍回收率为71.25%的镍精矿。     

新疆某低品位铜镍矿选矿试验研究

针对新疆某低品位铜镍矿矿石性质的特点,采用1粗2扫2精铜镍混浮、1粗1扫铜镍分离、中矿顺序返回的闭路试验流程,铜镍混浮以CMC与水玻璃的组合为脉石矿物抑制剂、异丁基黄药为捕收剂、A8为辅助捕收剂,铜镍分离以活性炭为脱药剂、石灰与T12的组合为镍矿物抑制剂、Z-200为捕收剂,获得了铜品位为27.03%、铜回收率为67.79%、含镍0.93%的铜精矿,以及铜品位为3.79%、镍品位为5.59%、铜回收率29.14%、镍回收率70.82%的铜镍混合精矿。     

某低品位难选铜镍硫化矿高效降镁与铜镍分离

新疆某强蚀变型铜镍硫化矿铜镍品位低,氧化镁含量高,铜镍矿物嵌布粒度微细,共生关系密切,属于难选铜镍矿石。针对矿石含镁脉石矿物组成复杂、铜镍矿物呈细粒集合体嵌布的特点,采用"铜镍混浮—混合精矿脱药再磨—铜镍分离"工艺与FY高效抑制剂获得合格的铜精矿与镍精矿。结果表明,对铜镍混合粗精矿,采用组合抑制剂FY精选降镁,可得含铜2.41%、镍4.37%的铜镍混合精矿,精矿含氧化镁由10.64%降至4.61%。铜镍混合精矿经活性炭与硫化钠脱药,再磨至-38μm占85%,石灰与Na_2SO_3抑制镍矿物,Z-200浮选铜矿物,得到含铜22.07%、氧化镁2.65%,回收率73.23%的铜精矿,含镍6.01%、氧化镁5.51%,回收率82.11%的镍精矿,实现铜镍精矿的高效降镁与铜镍有效分离。     

硫化铜镍矿浮选中捕收剂的吸附竞争

摘要:针对丹巴铜镍矿原矿品位低,氧化率高、脉石矿物可浮性好且易泥化的特征,通过试验研究,确定了铜镍混合浮选-铜镍分离的浮选工艺流程对该矿进行回收利用。并充分的利用了捕收剂的吸附竞争,在铜镍混浮精选作业中添加CMC,改变了脉石矿物对捕收剂的吸附竞争强度,使得有用矿物对捕收剂的吸附竞争强度增加,改善了镍矿物的可浮性,较好的实现了有用矿物与脉石矿物的浮选分离。在确定了较佳的浮选工艺条件下,小型实验室闭路试验可获得铜品位21.55%、铜回收率64.65%的铜精矿和镍品位5.19%、镍回收率66.80%的镍精矿的选矿指标。      

铜镍硫化矿石直接浮选分离试验研究

采用优先浮铜－铜镍混浮－铜镍分离的阶段磨选流程适于高铜低镍硫化矿石的分选,有利于铜矿物的早收多收,ＢＹ－５是含镁脉石矿物的有效抑制剂,较好地解决了铜镍分离的困难。闭路试验结果为,铜精矿含Ｃｕ３２．２６％,镍精矿含Ｎｉ４．６６％,铜、镍金属回收率分别达到９１．６６％和８０．６３％。     

攀西某铜镍混合精矿浮选分离试验

攀西某铜镍矿选矿厂的铜镍混合精矿铜、镍品位分别为3.60%和7.91%,铜镍主要以硫化物形式存在,铜镍矿物嵌布关系密切、嵌布粒度微细,浮选分离难度较大。为高效分离该铜镍混合精矿,在再磨、脱药的基础上进行了抑镍浮铜试验。结果表明,试样加活性炭和硫化钠磨矿后（磨矿细度为-0.026 mm占76%）浓缩脱药,采用1粗3精2扫、中矿顺序返回流程处理,可获得铜品位为28.88%、含镍0.78%、铜回收率为84.55%的铜精矿和镍品位为8.75%、含铜0.62%、镍回收率为98.96%的镍精矿,较好地实现了铜镍混合精矿的分离。     

云南某低品位铜镍硫化矿浮选试验

为给云南某低品位铜镍硫化矿石资源的开发利用提供依据,对该矿石进行了工艺矿物学研究和选矿试验。结果表明：①矿石中的主要有用元素为铜、镍,主要有用矿物为黄铜矿、镍黄铁矿、紫硫镍矿、含镍磁黄铁矿,铜镍主要以硫化物形式存在,分别占总铜、总镍的84.09%和85.96%,铜镍紧密共生,分离难度较大,宜采用混浮工艺回收铜镍;②矿石适宜的磨矿细度为-200目占80%,铜镍混浮粗选pH调整剂Na2CO₃、脉石矿物抑制剂CMC、镍矿物活化剂CuSO₄、捕收剂丁基黄药+硫氨酯适宜的用量分别为800、400、200、90+30 g/t;③采用1次粗选、3次扫选、扫精1扫精选、扫精选精矿与粗精矿合并1次精选、中矿顺序返回闭路流程处理该矿石,最终获得了铜镍品位分别为6.02%和3.97%、铜镍回收率分别为83.05%和84.55%的铜镍混合精矿。     

组合抑制剂用于铜镍分离浮选的试验研究

原矿铜镍矿物的工艺粒度偏细,在-0.01mm的级别中,黄铜矿、镍黄铁矿以及磁黄铁矿的含量分别为88.57%、93.58%和75.71%,造成铜镍浮选分离时互含较高。试验首先对铜镍混合浮选精矿进行浓缩脱药,然后以石灰和亚硫酸作为镍矿物的组合抑制剂,并用Z-200强化铜矿物可浮性及细颗粒铜矿物的回收,在磨矿细度-0.030mm89.3%的条件下,经过一次粗选、一次扫选和三次精选的闭路浮选,获得了铜品位20.11%、含镍0.67%,铜回收率74.59%的铜精矿;镍品位5.57%、含铜0.60%,镍回收率98.96%的镍精矿,实现了铜镍的有效分离。      

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。