高砷复杂难选钨锡锌选矿工艺流程试验研究

试验依据高砷复杂难选钨锡锌矿矿石特点,采用重选—浮选—磁选—浮选联合工艺流程,获得钨精矿含WO367.82%、WO3回收率64.12%,锡精矿含锡31.21%、锡回收率68.13%,锌精矿含锌51.82%、锌回收率80.79%的指标。     

俄罗斯某钨矿选矿工艺研究-增刊

俄罗斯某钨矿含WO3 0.36%,S 2.37%。矿石中钨矿物主要为黑钨矿,黑钨矿中的WO3占91.89%,白钨矿中的WO3仅占8.11%;硫矿物为黄铁矿、磁黄铁矿;脉石矿物主要为石英、云母,其次为长石,另外有少量的绿泥石、萤石,微量的方解石、磷灰石、金红石,菱锰矿、绿帘石、榍石等。针对该矿石特点,采用“螺旋溜槽 悬振锥面选矿机粗选—粗精矿摇床精选—重选粗精矿浮选脱硫—摇床精选”工艺流程,实验室可获得含WO3 65.07%,回收率78.15%的钨精矿。     

江西某钨矿钨细泥选矿新工艺应用研究

江西某大型钨矿,日产细泥400~500 t,含WO30.13%~0.5%,-0.074mm含量大于90%,-0.02mm含量达32.3%。采用重选预富集-浮选-重选选矿新工艺选别该细泥,小型试验指标为:总钨精矿品位WO345.26%,回收率62.33%,其中白钨精矿品位WO355.38%,回收率29.82%,黑钨精矿品位WO338.76%,回收率32.51%。工业试验指标为:总钨精矿品位WO351.148%,回收率62.52%,其中白钨精矿品位WO365.43%,回收率31.40%,黑钨精矿品位WO341.90%,回收率31.12%。     

从浮选尾矿中综合回收钼和白钨的试验研究

针对某含钨、钼尾矿进行了试验研究,确定了浮选工艺条件,通过小型闭路试验获得白钨精矿含WO356.45%、回收率为70.23%;钼精矿含钼Mo48.50%、回收率58.20%的指标。     

江西某钨钼矿选矿工艺研究

江西某钨钼矿为黄铁矿化白钨矿石岩,含钨O.951%,钼0.042%。为综合回收钨和钼,试验采用先浮硫化矿,尾矿经过重选—磁选—浮选,分别获得钼品位46.53%、钼回收率37.67%的钼精矿,含WO3为71.23%、钨回收率为52.07%的黑钨精矿,含WO3为66.83%、钨回收率为21.71%的白钨精矿。     

某白钨矿选矿工艺技术研究

对江西某白钨矿采用优先选硫—白钨粗选—白钨粗精矿加温精选的流程,获得钨精矿WO3品位61.79%、WO3回收率74.30%的较好指标。为开发利用该类型低品位钨矿石提供了技术依据。     

从某低品位多金属矿中回收黑白钨矿的选矿试验研究

某复杂低品位黑白矿属世界级难选矿石,含WO30.26%,WO3在白钨矿、黑钨矿和钨华中分布率为82.69%、13.85%、3.46%,小于0.074mm粒级占90%以上.虽然经多年的研究工作,钨的回收率仅为65%.为了提高钨回收率,经试验研究,采用新型选矿药剂TAB-3和合理的工艺流程(浮-磁-浮选矿工艺流程),获得白钨精矿品位WO374.57%、回收率69.47%,黑钨精矿品位WO328.88%、回收率8.08%,总钨回收率为77.55%.     

尼尔森离心重砂有价金属分离试验研究

河南某大型金矿生产产出的尼尔森离心重砂含铅2.56%、钨(WO3)5.13%,具有较高的综合回收价值。重砂性质分析查明:铅、钨主要以方铅矿、黑钨矿形式赋存,部分黑钨矿与黄铁矿呈复杂嵌生的关系。分离试验采用磁选—重选—浮选联合工艺依次产出高品位金精矿、低品位金精矿、铅精矿、金硫精矿、钨精矿、钨中矿,其中铅精矿含铅48.15%、含金7 255.50 g/t、铅回收率为73.22%,钨精矿含钨(WO3)60.31%、钨回收率73.60%,钨中矿含钨(WO3)14.93%、钨回收率9.11%。     

江西某多金属矿中铜钨资源的综合回收

江西某铜钨多金属矿石含铜 0.72%、含 WO3 0.11%,具有较高的开发利用价值,为了实现该多金属矿中 铜、钨资源的综合回收,对该矿石进行了详细的工艺矿物学和选矿试验研究。结果表明,该多金属矿中矿物种类较 为复杂,白钨矿、黄铜矿嵌布粒度以中细粒为主,单体解离度良好,硫化矿物和钨矿物的相互关系不是十分密切。针 对该矿物特点,采用“铜硫硫化矿混浮—硫化矿浮选尾矿浮白钨矿”的流程,在磨矿细度为-0.074 mm 占 78% 条件 下,以丁基黄药为铜硫混合浮选捕收剂,经 1粗 1扫铜硫浮选,铜硫混合粗精矿以石灰为 pH 调整剂经 1粗 1精 1扫铜 硫分离浮选,铜硫浮选尾矿以碳酸钠为调整剂、水玻璃为抑制剂、硝酸铅为活化剂、GYB+GYR为钨矿物混合捕收剂, 经 1 粗 1 扫粗选,所得钨粗精矿再磨至-0.045 mm 占 85%,进行 4 次精选,闭路试验获得了含铜 24.78%、含金 0.40 g/t、 含银 1 000.00 g/t,铜回收率 90.02% 的铜精矿,以及 WO3品位 35.32%、WO3回收率 65.25% 的钨精矿,实现了有价金属 的综合回收,为该铜钨资源的开发利用提供了技术依据。     

江西某钨锡混合精矿浮选分离试验研究

江西某钨锡选厂重选粗精矿WO3和Sn含量分别为25.20%和19.03%,钨主要以黑钨矿的形式存在,锡主要以锡石矿物产出。为实现该混合精矿中钨矿物与锡矿物的有效分离,以该钨锡混合精矿为研究对象,进行了钨锡分离试验。结果表明,采用"抑锡浮钨"的浮选工艺流程能较好地分离该混合精矿中的钨矿物与锡矿物,1粗3精2扫闭路试验流程处理试样,获得了WO3品位为55.64%、回收率为88.43%的钨精矿和Sn品位为40.53%、回收率为98.20%的锡精矿,钨精矿含Sn较低,仅为0.32%,分离指标较理想。     

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