某混合铜矿选矿试验研究

四川某铜矿含Cu0.77%,Ag8.2g/t,铜矿物以辉铜矿等硫化铜为主,氧化铜矿物主要为孔雀石,氧化率为16.88%,其中结合氧化铜占10.39%,属于低品位混合铜矿。针对矿石性质,确定了优先浮选硫化矿再浮选氧化矿的浮选工艺。在适宜的磨矿细度和药剂制度下,采用一段磨矿,两次粗选,一次精选,一次扫选的闭路试验流程,最终取得了铜精矿品位为25.76%,回收率为85.74%,含Ag258.21g/t的指标。      

云南某高碳氧化铜矿浮选实验研究

对云南某地高碳氧化铜矿进行浮选实验研究,原矿含Cu 1.52％,氧化率48.06％,含Ag53.1g/t、C0.59％.采用脱碳-浮选和直接浮选对比实验,结果表明直接浮选工艺较合理.闭路实验获得了铜精矿产率4.24％,含Cu 33.46％,铜回收率为82.97％;含Ag 924 g/t、银回收率为73.78％的选别指标.     

某含铜金银多金属硫化矿尾矿资源综合利用试验研究

对某含铜金银多金属硫化矿尾矿进行了综合利用试验研究。该尾矿主要有价元素为Cu、Au和Ag, 含量分别为0.16%、0.36 g/t、62.74 g/t, 主要金属矿物为黄铁矿和黄铜矿, 金、银主要分布于黄铜矿中, 其次分布于黄铁矿中。采用磨矿-铜硫混合浮选-铜硫分离浮选工艺回收尾矿中的有价组分, 开展了磨矿细度、矿浆pH值、分散剂用量、捕收剂用量等浮选条件试验, 确定了相关工艺参数, 闭路试验获得了铜精矿产率0.68%, Cu品位18.96%、Au品位36.75 g/t、Ag品位5286.37 g/t, Cu回收率80.58%、Au回收率69.42%、Ag回收率58.79%;硫精矿产率3.39%, S品位37.16%、Cu含量0.28%、Au含量2.05 g/t、Ag含量306.81 g/t, S回收率78.24%、Cu回收率5.93%、Au回收率19.30%、Ag回收率17.01%;实现了堆存尾矿中Cu、Au、Ag、S等有价元素的高效综合利用。     

某铜银矿浮选试验研究

某铜银矿矿石中有用组分铜含量低,伴生贵金属银含量较高,矿石成分较复杂,金属分布不均匀,含泥较高,氧化铜嵌布粒度较细,属难选氧化铜矿。试验研究了不同磨矿细度、药剂用量和工艺流程条件下的分选效果,结果表明:硫化矿、氧化矿混合浮选铜银矿药剂简单而且指标良好;当原矿磨矿细度达到-0.075mm占90.77%时,相对入选原矿量,在调整剂水玻璃用量500g/t、石灰用量500g/t、硫化剂硫化钠用量300g/t、捕收剂Y89黄药用量100g/t、戊基黄药用量100g/t、丁铵黑药用量80g/t、Z-200用量20g/t的条件下,采用"硫氧混浮一粗三扫三精"浮选流程,闭路试验得到的铜精矿品位为26.89%,铜回收率为89.39%;银精矿品位为2 320.30g/t,银回收率为88.35%。     

组合药剂硫化——浮选某含银氧化铜矿石的试验研究

为了解决陕西某含银氧化铜矿选矿厂铜回收率低的问题，在矿石性质研究的基础上，进行了详细的选矿试验研究。结果表明，原矿含铜1.24%、银37.2 g/t，铜主要以孔雀石和蓝铜矿的形式存在，银主要赋存于氧化铜矿物中。针对目的矿物嵌布粒度细、硫化速度慢、易泥化的特点，以硫化钠+硫酸铵为组合硫化剂，以异戊基黄药+苯甲羟肟酸为组合捕收剂，采用原矿硫化—浮选—中矿集中再磨再选的工艺流程，最终浮选闭路试验获得了精矿铜品位18.09%、铜回收率89.47%、银品位477.56 g/t、银回收率80.60%的良好指标。该工艺为解决氧化铜矿生产中铜、银选别指标差的问题提供了技术依据。     

新型起泡剂W-701浮选铜录山低品位高含泥氧化铜矿石的研究

本文介绍了新型起泡剂 W- 70 1的性能及应用实例。针对湖北大冶铜录山矿低品位高含泥 (- 1 0μm1 0 %～ 2 0 % )氧化铜矿石的特性 ,采用新型起泡剂代替生产中使用的传统型起泡剂 2号油 (松醇油 ) ,大大改善了泡沫性能 ,使铜精矿品位及铜和伴生金银的回收率大幅度提高。工业试验处理含 Cu1 .0 7% (结合铜占 30 % )、含 Au1 .0 1 g/ t(包裹金占 1 0 .7% )、含银 6.2 g/ t的原矿 ,可获含Cu、Au、Ag分别为 2 0 .32 % ,2 0 .72 g/ t,85g/ t的铜精矿 ,相应回收率分别为 71 .60 % ,77.35% ,51 .61 %。与使用 2号油起泡剂相比 ,铜精矿含 Cu、Au、Ag分别提高 5.41 % ,4.78g/ t,2 5.3g/ t,相应回收率提高 7.7% ,4.0 3% ,6.96%。     

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。      

缅甸某氧化铜矿选矿工艺研究

针对缅甸某氧化铜矿石特点, 确定了硫氧混合浮选的原则工艺流程, 在条件试验的基础上进行了小型闭路试验, 最终可获得Cu品位23.55%、Ag含量1 919.20 g/t、Cu回收率91.16%、Ag回收率93.08%的铜精矿, 银主要富集于铜精矿中, 有价元素铜和银得到了很好地回收。     

云南某难选铅锌矿选矿新工艺试验研究

针对云南某难选铅锌矿,原采用的选矿流程为“铅优先浮选—锌硫混浮—锌硫分离”高碱工艺,铅精矿、锌精矿品位及回收率不高,导致资源浪费,为提高生产指标,在探索试验的基础上确定了铅锌顺序优先浮选低碱清洁新工艺,试验主要考察了磨矿细度、矿浆pH值、浮选抑制剂及捕收剂等因素对选别指标的影响,并确定了最佳的药剂制度。在最佳条件试验基础上,采用铅锌顺序优先浮选清洁工艺,对Pb品位3.62%、Zn品位4.04%、含Ag 19.04 g/t的原矿进行选别,最终获得了Pb品位65.70%、含Zn 2.36%、含Ag 150 g/t, Pb回收率92.93%、Ag回收率40.31%的铅精矿和Zn品位53.89%、含Pb 1.46%、含Ag 115 g/t, Zn回收率为88.71%的锌精矿,较原高碱工艺流程Pb品位提高18.36个百分点、回收率提高5.46个百分点、Zn品位提高9.66个百分点、锌回收率提高4.65个百分点的良好指标。     

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%。     

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