江西某低品位银锑钨矿的浮选工艺

江西某含银锑钨矿矿体(AgⅠ/AgⅡ号矿体)资源量总计为含钨和银38.0430万t,含锑4.1276万t。研究钨矿伴生银、锑的赋存状态和工艺矿物学特征,进行粗选和精选条件试验。原矿中WO3品位0.87%,银品位17.24 g/t,锑品位0.052%,闭路全浮选流程可获得最终钨精矿WO3品位71.78%,回收率90.19%,硫精矿产率1.87%,银品位720.90 g/t,锑品位1.52%,对原矿银回收率78.20%,锑回收率54.66%,可在冶炼过程中回收部分有用元素。     

河北某地低品位银锰矿选矿工艺研究

对河北某低品位银锰矿采用强磁选-浮选工艺, 试验结果表明, 在原矿含银210.8 g/t, 磨矿细度为-0.074 mm粒级占30%, 磁场强度955.4 kA/m的条件下, 获得强磁精矿含银595.7 g/t, 浮选银精矿品位7 328.0 g/t, 锰矿泥含银288.7 g/t, 总回收率81.44%, 3种精矿合起来的平均银品位为586.8 g/t, 且工艺简单, 易于工业实现。     

云南某低品位硫化银铅锌矿选矿优化研究

针对云南某低品位银铅锌矿选矿回收率较低的现状,以现场生产原矿作为试验给矿,在原矿工艺矿物学的基础上开展了试验研究。通过优化磨矿细度,控制石灰用量,采用乙硫氮、丁基铵黑药、25#黑药组合捕收剂代替单一捕收剂,硫酸锌、亚硫酸钠代替单一抑制剂,在原矿含铅0.79%,含锌1.51%,含银95.04g/t时,获得了含铅48.65%,铅回收率89.87%,含银4 012g/t,银回收率为61.60%的银铅精矿,含锌46.21%,锌回收率90.43%,含银891g/t,银回收率为27.70%的银锌精矿,铅、锌、银精矿品位和回收率较生产指标提高明显。试验成果取得了良好的工业应用。     

某富银铅锌矿选矿试验研究

针对某富银铅锌矿,原矿铅品位3.36%、锌品位3.68%、银品位176.69g/t,试验采用铅锌优先浮选流程进行铅锌分离并综合回收银,取得了较好的技术经济指标。最终获得了铅品位61.58%、铅回收率83.06%、含银1686g/t、银回收率为43.23%的铅精矿;锌品位48.57%、锌回收率81.93%、含银630.70g/t、银回收率为22.13%的锌精矿。试验成果为该矿区地质评价及矿产资源开发利用提供了有利依据。     

河南某银金铅锌多金属矿选矿试验研究

对河南某银金铅锌硫化物矿进行浮选试验研究。原矿 入选品位 Ag155.40g/t、Au0.88g/t、Pb1.54%、Zn0.90%, 采用“铅 锌 硫”依次优先浮选工艺流程。闭路试验获得的 选别指 标 为:铅 精 矿 产 率 2.47%、含 Ag4681.64g/t、Au 13.87g/t、Pb57.51%,金回收率52.77%、银回收率88.53%、 铅回收率93.46%;锌精矿产率1.93%、金品位5.15g/t、银品 位197.64g/t、锌品位43.64%、金回收率15.31%、银回收率 2.92%、锌回收率84.69%;硫精矿产率3.16%、金品位4.89 g/t、银品位142.64g/t、金回收率23.80%、银回收率3.45%。     

西藏某低品位钨矿浮选试验研究

西藏某低品位钨矿WO3品位0.216%。根据原矿性质,试验采用先浮硫化矿、后浮选白钨矿,精选采用常温浮选的工艺流程,最终获得了WO3品位66.72%、回收率86.49%的钨精矿,取得了良好的试验指标。     

云南某高碳酸盐型含银氧化铜矿中铜银同步浮选实验

对云南某高碳酸盐型含银氧化铜矿进行铜银同步浮选实验研究。结果表明,通过闭路实验,可获得铜银精矿Cu品位22.03%,Cu回收率71.69%, Ag品位1095 g/t,Ag回收率81.90%的技术指标。采用此同步浮选工艺可有效选别该含银氧化铜矿。     

某铅锑银多金属矿选矿试验

在工艺矿物学研究基础上,对某铅锑银多金属原生矿进行了混合浮选工艺技术条件研究。结果表明,原矿磨至-0.074 mm占85%时,经1粗2扫3精、中矿顺序返回流程处理,可获得Pb、Sb、Ag品位分别为28.00%、31.00%、920.0 g/t,Pb、Sb、Ag回收率分别为85.69%、95.89%、78.39%的铅锑混合精矿。     

缅甸某铅锌银多金属氧硫混合矿选矿技术开发研究

对缅甸某铅锌银多金属氧硫混合矿进行了选矿流程方案试验,遴选出优先浮铅-活化选锌-硫化黄药法浮选回收氧化铅工艺方案,闭路试验可获得铅精矿铅品位52.25%、含银1 732.52 g/t、回收率分别为65.96%和78.28%,锌精矿锌品位43.82%、含银209.56 g/t、回收率分别为79.15%和11.90%,氧化铅精矿铅品位35.62%、含银215.55 g/t、回收率分别为11.16%和2.42%。2种铅精矿综合铅品位48.94%、总回收率77.12%,含银1 430.97 g/t、回收率80.70%。     

2,3-二羟基丙基二硫代碳酸钠在西藏柯月铜铅锌矿的浮选应用研究

应用2,3-二羟基丙基二硫代碳酸钠取代重铬酸钠, 对西藏隆子县柯月铜铅锌矿进行了浮选分离试验研究, 闭路试验获得了含铜20.57%、含锑12.76%、含银5695.0 g/t、铜回收率78.08％、锑回收率20.67%、银回收率48.53%的铜锑混合精矿, 含铅53.02%、含锑9.90%、含银1177.0 g/t、铅回收率92.54％、锑回收率62.04%、银回收率38.80%的铅锑混合精矿和锌品位49.35%、锌回收率82.63%的锌精矿, 获得了良好的经济效益和社会效益。     

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。