安徽某含泥难选铜钼矿选矿试验

安徽某铜钼矿矿石中易泥化的蛇纹石含量高且含有小鳞片状的滑石,属难选矿。针对该矿矿石性质,试验确定了铜钼等可浮-铜钼分离-铜硫混合浮选-铜硫分离的浮选方案,通过降低浮选矿浆浓度、使用低粘度的起泡剂MIBC和加大水玻璃用量等技术手段有效改善了钼浮选效果。闭路试验获得了良好的分选指标:铜精矿品位为18.31%,回收率为80.39%,钼精矿品位为47.79%,回收率为87.26%,硫精矿品位为39.25%,回收率为68.92%。     

铜钼混合精矿磁浮联合工艺分离试验研究

为解决德兴铜矿铜钼分离工艺硫化钠用量大、产生的碱性废水中COD含量高、废水处理成本高等问题,结合铜钼混合精矿粒度细、铜钼矿物组成简单、单体解离度高的特点,开展了磁浮联合工艺选矿试验研究。通过条件试验确定了较优的磁选工艺参数,磁选扩大试验获得了磁选精矿产率39.16%、铜品位29.27%、钼损失率6.08%的指标;对磁选尾矿进行了浮选分离试验,获得了精矿钼品位46.54%、钼作业回收率93.97%的指标;综合计算表明,采用磁浮联合工艺处理含铜25.56%、含钼1.04%的铜钼混合精矿,可获得铜品位26.02%、铜回收率99.79%的铜精矿及钼品位46.54%、钼回收率88.30%的钼精矿,铜钼分离指标较优。此外,由于磁选作业提前分离出近40%的高铜低钼铜精矿,大幅降低了浮选处理量,使硫化钠等浮选药剂用量降低40%以上,显著降低了碱性废水的COD含量及后续水处理成本,具有显著的经济效益和环保效益。     

丁基黄药体系下铜钼分离试验研究及工程化实践

为提升铜钼分离浮选指标,针对某铜钼混合精矿开展了详细的选矿试验研究并进行工程化实践。研究结果表明,在丁基黄药体系下,铜钼混合精矿直接浮选,采用"一次粗选、六次精选、二次扫选、钼粗精矿再磨再选"流程选别,实验室条件下可获得含Cu 2.25%,含Mo 47.59%,铜作业损失率0.17%,钼作业回收率93.74%的钼精矿。现场工程实践过程中,可获得Mo品位49.50%,Cu品位1.18%,钼作业回收率78.16%,铜作业损失率0.06%的钼精矿。     

西藏某铜钼矿选矿工艺研究

某铜钼矿床是我国典型的超大型斑岩铜钼矿床,主要为原生硫化矿石,含铜0.47%、钼0.026%、硫2.02%,矿石品位低、性质复杂、难选。通过多种选矿工艺流程探讨,确定采用钼铜等可浮选再分离—铜硫混合浮选分离工艺流程产出钼精矿、铜精矿及硫精矿,实验室获得的闭路试验指标为:总铜精矿品位22.85%、铜回收率87.17%,钼精矿品位48.85%、钼回收率68.96%,硫精矿品位40.75%、硫回收率61.07%。     

某铜钨钼矿选矿试验研究

对某铜钨钼矿进行了浮选工艺研究,确定了最佳的工艺流程,铜钼分离浮选闭路试验流程获得了铜品位18.62%、铜回收率58.62%的铜精矿和钼品位47.01%、钼回收率91.49%的钼精矿.     

西藏甲玛铜钼矿浮选试验研究

根据西藏甲玛铜钼矿石的共生嵌布状况及特点,制定了铜钼混合浮选—铜钼分离的工艺试验流程。铜钼混合浮选采用常规浮选药剂,铜钼分离采用自行研发的低毒高效铜抑制剂HX,通过大量的条件试验,确定了铜钼混合浮选—铜钼分离的最佳工艺条件,并进行了全流程闭路试验,最终获得钼精矿钼品位48.49%、钼回收率86.95%,铜精矿铜品位32.23%、铜回收率95.19%的良好指标。     

西藏某铜钼矿石浮选试验研究

根据西藏某铜钼矿石的共生嵌布状况及特点,制定了铜钼混合浮选—铜钼分离的工艺试验流程。铜钼混合浮选采用常规浮选药剂,铜钼分离采用自行研发的低毒高效铜抑制剂HX-1,通过大量的条件试验,确定了铜钼混合浮选—铜钼分离的最佳工艺条件,并进行了全流程闭路试验,最终获得钼精矿钼品位48.49%、钼回收率86.95%;铜精矿铜品位32.23%、铜回收率95.19%的良好指标。     

行洛坑钨矿伴生钼铜铋浮选分离新工艺研究

为提高宁化行洛坑钨矿伴生钼铜铋硫化矿的浮选分离指标,采用优先浮钼-铜铋混浮-铜铋分离-铋粗精矿再浸出收铋新工艺进行了试验研究,获得了钼品位为45.37%、钼回收率为90.46%的钼精矿,铜品位为23.01%、铜回收率为91.03%的铜精矿及铋品位为62.37%、铋回收率为60.09%的铋精矿。与现场原来采用的钼铜铋依次优先浮选工艺相比,试验新工艺使钼精矿钼回收率提高了4个百分点以上、铜精矿铜回收率提高了8个百分点以上、铋精矿铋回收率提高了52个百分点以上,效果显著。     

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%。     

磨矿细度在铜-钼硫化矿异步混合浮选分离工艺中的关键作用研究

针对某低品位铜钼多金属复杂硫化矿, 研究了磨矿细度在铜-钼硫化矿异步混合浮选分离工艺中的关键作用。采用异步混合浮选工艺流程, 得到铜-钼混合精矿、铜精矿和硫精矿, 然后再对铜-钼混合精矿进行再磨浮选分离, 通过优化和控制异步混合浮选工艺中的磨矿细度, 最终获得品位22.85%、回收率87.17%的铜精矿和品位48.85%、回收率68.96%的钼精矿。     

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。