某低品位铜铅锌硫化矿浮选分离试验研究

针对某低品位铜铅锌硫化矿,采用铜铅顺序优先浮选-锌硫混合浮选再分离工艺进行了浮选分离试验研究。选用高效选择性铜捕收剂BK916和铅捕收剂BK906进行了铜铅顺序优先浮选试验研究,并在锌硫分离试验研究中,利用环保型抑制剂BD和石灰的组合作用,有效抑制了锌硫混合精矿中的黄铁矿,获得了铜品位20.68%、铜回收率72.98%的铜精矿,铅品位61.38%、铅回收率73.57%的铅精矿,锌品位46.31%,锌回收率73.17%的锌精矿和硫品位48.54%的硫精矿。     

广西某低品位铅锌硫化矿选矿工艺优化研究

广西某低品位难选铅锌矿含铅0.61%,含锌2.61%,选矿厂采用铅、锌各一次粗选、两次扫选、四次精选优先浮选工艺流程,因生产过程中,流程容易波动,影响铅锌浮选指标。为给现场工艺流程优化改造提供依据,在工艺矿物学研究的基础上,对该矿石进行了选矿优化试验研究。试验结果表明,在原矿磨矿细度不变的条件下,通过优化铅锌的药剂制度,并对锌中矿进行再磨,闭路试验可获得铅精矿含铅52.78%、铅回收率43.36%,锌精矿含锌50.49%、锌回收率为86.50%。相比现场生产指标,铅精矿品位提高了7.67%,铅回收率提高了10.92%,锌回收率提高了4.35%,铅锌浮选指标得到了明显改善。     

浙江遂昌花园岭四号铅锌矿选矿试验研究

探讨了花园岭四号铅锌矿矿石的可选性,确定浮选工艺条件,采用优先浮选流程,最终闭路试验获得,铅精矿品位56.63%、铅回收率70.70%,锌精矿品位55.76%、锌回收率90.92%,硫精矿品位49.50%、硫回收率81.68%的试验指标,其中锌精矿、硫精矿均为一级品。     

宁南难选氧化硫化混合铅锌矿选矿工艺研究

针对宁南难选氧化硫化混合铅锌矿的特点,确定了先浮选硫化矿物后浮选氧化矿物的优先浮选全浮选工艺流程,在条件试验的基础上进行了小型闭路试验,可获得铅品位73.01%、铅回收率64.73%的硫化铅精矿;锌品位43.54%、锌回收率29.88%的硫化锌精矿;铅品位51.44%、铅回收率30.77%的氧化铅精矿;锌品位26.88%、锌回收率37.32%的氧化锌精矿,其中氧化锌矿物采用预先脱泥及中矿再脱泥的浮选工艺可以改善氧化锌选别效果,使流程更加通畅。      

铜铅锌多金属混合精矿浮选分离试验研究

针对徐州某矿业公司经混合浮选-优先浮选流程得到的硫化铜铅锌混合精矿表面附着大量药剂、现场生产无法实现三者分离的问题,进行了浮选分离试验研究。采用脱药-铜铅混合浮选工艺,以硫化钠为脱药剂,然后以硫酸锌+亚硫酸钠作为组合抑制剂、Z-200+乙硫氮作为组合捕收剂,最终获得铜品位14.32%、铜回收率84.12%,铅品位25.36%、铅回收率69.55%,且锌含量7.86%的铜铅混合精矿以及锌品位52.29%、锌回收率95.85%的锌精矿。     

某铜铅锌多金属硫化矿选矿试验研究

对某富含金银等贵金属的复杂铜铅锌多金属硫化矿进行了选矿试验研究。以BK916作铜捕收剂、BK906作铅捕收剂, 采用铜优先浮选-铅浮选-锌硫混合浮选-锌硫分离工艺回收主要有价元素, 获得了铜精矿铜品位24.26%、回收率58.21%, 铅精矿铅品位70.75%、铅回收率86.55%, 锌精矿锌品位51.53%、锌回收率89.44%, 硫精矿硫品位39.84%、回收率38.03%的良好选矿指标; 铜、铅、锌、硫4种精矿产品中金总回收率92.16%、银总回收率89.44%。     

安徽某含碳铅锌矿选矿工艺试验

为了高效综合回收安徽某含碳铅锌难选矿,在矿石性质研究的基础上对该矿进行了试验研究。研究结果表明：通过采用铅锌优先浮选工艺流程,最终获得了铅品位55.35%、铅回收率94.76%的铅精矿,锌品位55.46%、锌回收率91.98%的锌精矿,硫品位43.55%、硫回收率70.90%的硫精矿,为该矿石的回收利用确定了最优的浮选工艺。     

西北某难选混合铅锌矿浮选试验

针对西北某难选混合铅锌矿氧化率高,品位较低、共生关系复杂的特点,采用抑锌浮铅的优先浮选工艺方案进行了矿石选矿试验研究。试验研究结果表明,在适宜的磨矿细度和药剂制度下,采用试验确定的闭路试验流程处理该矿石,可获得铅品位为67.85%、铅回收率为82.28%的铅精矿;锌品位为60.13%、锌回收率为82.76%的锌精矿。     

新型捕收剂在青海某混合铅锌矿分选中的应用

对青海某硫氧混合铅锌矿进行了工艺流程及药剂制度试验研究。根据矿石特点,采用先浮铅后浮锌的优先浮选工艺进行试验,选锌工艺采用同时捕收硫化锌矿物和氧化锌矿物的新型捕收剂TY,最终获得了铅精矿铅品位66.39%、回收率97.13%、锌含量0.54%,锌精矿锌品位53.11%、回收率89.23%、铅含量0.65%的浮选指标。该研究为混合铅锌矿的浮选分离提供了一定的借鉴参考意义。      

某银、铅、锌多金属矿的浮选试验研究

该复杂多金属矿银、铅和锌品位分别为184 g/t、0.56%和2.56%,银优先浮选的试验结果表明,难以获得高品位的银精矿,推荐铅锌依次优先浮选流程,将银矿物富集到铅精矿中,获得银铅精矿、锌精矿。实验室闭路试验结果为:银铅精矿的银品位8 978 g/t、铅品位48.53%,相应的银回收率71.73%、铅回收率91.59%;锌精矿的银品位875 g/t、锌品位45.28%,相应的银回收率22.46%、锌回收率84.69%。银铅精矿和锌精矿中银回收率相加得银的总回收率为94.19%。     

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

正~~     

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