贵州某难选褐铁矿选矿试验研究

贵州某铁矿主要铁矿物为褐铁矿和赤铁矿,脉石矿物主要为粘土、绿泥石等铝硅酸盐,铁矿物嵌布粒度细,共生关系复杂,磨矿易泥化,属极难选铁矿。采用重选、强磁选、强磁-反浮选工艺进行选矿试验, 所得铁精矿品位和回收率都很低;在磁化焙烧-弱磁选正交条件优化试验基础上,采用磁化焙烧-磨矿分级-细粒弱磁-粗粒再磨弱磁选工艺,最终可获得铁品位61.22%、回收率77.82%的铁精矿。该试验研究为贵州某褐铁矿的开发利用奠定了基础, 同时对于其它类似铁矿开发利用具有一定的借鉴和参考价值。     

某易泥化褐铁矿选矿试验研究

对某易泥化褐铁矿进行了选矿试验研究.根据矿石性质,对比了三种流程,其中分级-磁选(+0.03mm粒级直接磁选,-0.03 mm粒级絮凝强磁选)可获产率42.53%、TFe 52.99%、回收率55.80%的铁精矿.     

湖南某石英型赤褐铁矿选矿试验研究

对湖南某石英型赤褐铁矿进行了选择性絮凝-强磁选-反浮选试验研究。结果表明, 在磨矿细度-0.074 mm粒级占90.80%、水玻璃用量800 g/t、聚丙烯酰胺用量100 g/t、磁选粗选磁场强度1.4 T、扫选磁场强度1.6 T条件下, 获得了铁品位56.17%、回收率60.12%的铁精矿; 强磁选尾矿进行反浮选, 获得了铁品位47.90%、铁回收率31.46%的中矿和铁品位15.69%、铁回收率8.41%的尾矿。选择性絮凝有利于矿泥与铁矿的分离, 可提高铁的回收效果。     

海南儋州鲕状褐铁矿选矿研究

针对海南儋州某褐铁矿矿石性质,采用阶段磨矿多段分选工艺,进行了强磁选、絮凝浮选、磁化焙烧及弱磁选等选矿试验研究。第一段磨矿细度为-0.074 mm68%的原矿经一次强磁粗扫选,混合精矿进入二次磨矿,-0.074mm占95%的磨矿产品絮凝去泥后进入混合胺反浮选,浮选精矿再磁化焙烧—弱磁选,可得到铁品位60.45%、回收率52.48%的最终精矿。     

某褐铁矿选矿工艺试验研究

某地铁矿石中主要铁矿物为褐铁矿和赤铁矿,脉石矿物主要为高岭石等硅酸盐,磨矿过程中,极易泥化,导致可选性变差。采用选择性絮凝脱泥、磁选、浮选及重选等工艺对该矿石进行了分选试验。结果表明,对这种类型的褐铁矿,采用强化矿浆分散,强磁选分离工艺是最合适的。在原矿铁品位为37.34%的情况下,可获得铁精矿品位54.12%、回收率62.16%的良好技术指标。     

海南儋州鲕状褐铁矿选矿研究

针对海南儋州某褐铁矿矿石性质,采用阶段磨矿多段分选工艺,进行了强磁选、絮凝浮选、磁化焙烧及弱磁选等选矿试验研究。第一段磨矿细度为-0．074mm68％的原矿经一次强磁粗扫选,混合精矿进入二次磨矿,-0．074mm占95％的磨矿产品絮凝去泥后进入混合胺反浮选,浮选精矿再磁化焙烧一弱磁选,可得到铁品位60．45％、回收率52．48％的最终精矿。     

大西沟菱褐铁矿表面磁化焙烧-强磁选新工艺研究

对大西沟铁矿进行了表面磁化焙烧-强磁选预富集新工艺探索。结果表明,采用表面磁化焙烧-强磁选预富集技术,在尾矿铁损失率仅10.30%的情况下,可以将菱褐铁矿品位从23.93%提高至33.89%,抛出产率36.68%、品位仅6.72%的尾矿。表面磁化焙烧-强磁选一粗两精流程可获得强磁精矿品位42.15%、回收率69.39%,总尾矿品位仅11.44%。研究成果可为菱褐铁矿合理经济利用提供新的方案。     

东鞍山微细粒铁矿选择性絮凝-强磁选技术研究

东鞍山铁矿石有用矿物嵌布粒度微细,强磁选作业回收率较低。本研究基于絮凝-磁选理论,开展强化细粒铁矿资源回收利用新技术研究。在研究赤铁矿和石英单矿物絮凝-沉降性能的基础上,通过絮凝-磁选试验考察了药剂种类及用量、矿浆pH值和搅拌转速等因素对微细粒铁矿絮凝-磁选行为的影响。结果表明:在适宜条件下,添加药剂可强化赤铁矿的絮凝,提高赤铁矿沉降率,而对石英团聚效果和沉降率影响较小。以DLZ为添加药剂,在搅拌转速为900 r/min、搅拌时间为5 min、矿浆pH值为10.0、磁场强度为0.9 T的条件下,可获得磁选精矿铁品位47.15%、铁回收率71.24%的分选指标,与常规磁选工艺相比,其磁选精矿铁品位下降了0.52个百分点,铁回收率增加了3.67个百分点,选矿效率增加了1.54个百分点。      

彝良难选鲕状赤褐铁矿提铁降磷工艺研究

针对彝良难选鲕状赤褐铁矿进行了系统的选矿试验研究,采用强磁选—反浮选及选择性絮凝浮选脱泥—反浮选均可以得到较好的选别指标:在强磁选—反浮选小型闭路试验中可以得到铁品位54.70％、回收率达79.44％、含磷仅0.17％的铁精矿;在选择性絮凝后浮选脱泥—反浮选的工艺流程中可以得到铁品位54.63％、铁回收率达77.62％、含磷仅0.15％的铁精矿.     

四川某难选褐铁矿选矿试验研究

针对四川某难选褐铁矿性质和特点,采用重选、强磁选、强磁-反浮选工艺进行选矿试验,所得铁精矿品位和回收率都很低;在条件优化试验基础上,采用磁化焙烧-磁选-反浮选工艺,最终可获得铁品位60.59%、回收率79.30%的铁精矿。该试验研究为四川某褐铁矿的开发利用奠定了基础,同时对于其他类似铁矿开发利用具有一定的参考价值和指导意义。     

China rare earth market review

正November 21~30,2014Due to weak demand from downstream industries,transactions of rare earth in Chinese domestic market were inactive.It was difficult to sell any rare earth products except for dysprosium oxide and terbium oxide.Suppliers lost confidence in recent market.Demand for rare earth products was soft.Consumers continued to take a wait-and-see attitude.Rare earth export market remained slow.     

Current situation and future trend of China rare earth luminescent materialindustry(continued)

<正>Developing ecological lighting source The world is facing the big problem of energy shortage today and the contradiction between economy development and environmental protection is worsened.Therefore,people are more likely to choose an ecological light source that is more energy efficient and environmental friendly.The choice provides great opportunity for the development of rare earth optical material industry in China.The concept of green lighting positions rare earth luminescent material as a leading player in illumination market.The light source of both rare earth luminescent lamp and LED lamp is ecological and energy saving.This is why     

Galaxy Magnets achieved the net profit of 34.02 million yuan in the first six months of 2014

正Galaxy Magnet announced its financial results for the first half of 2014 on August 14.For the first six months ended on 30 June 2014,Galaxy Magnet achieved operation income of RMB 182.3 million,up8.40% over the same period of 2013,and the net profit attributable to the shareholders of the listed company of 34.02 million yuan,increasing 35.49% over the same period of last year.Stable performance increase was led by development of new customers and application market of magnets.     

Rare Earth Application in Steel in China

<正>China has rich rare earth resources.Output of rare earth and steel in China ranks the top first in the world.However,there is still certain distance between the steel produced in China and developed countries from the point of varieties and quality.China still has to import some types of steel.Improving the quality should be emphasiZed in future development of steel industry in China.Rare earth can be used to upgrade traditional steel     

稀散金属产业的观察与思考

分析了近年来国内外稀散金属产业的生产、应用、资源与市场状况.铟锡氧化物靶材、砷化镓晶片、锗红外材料、铼高温合金和硒在电解锰及玻璃的应用等已成为稀散金属的主要应用领域.稀散金属的产量快速增长达到历史高位而导致了市场的失衡.以GaInP_2/GaAs/Ge,CIGS和CdTe为代表的非硅系太阳能电池是稀散金属的新兴应用领域,将给稀散金属带来日益增长的需求.     

Brief news

正Corun invested another 50 million yuan in power battery for HEV Hunan Corun announced on 27 June that they had signed the cooperation agreement to jointly built Corun(Shaoxing)Autos Power Battery System Co.,Ltd.in Shaoxing Binhai New City.According to the announcement,total registered     

铜熔炼中锍品位对杂质元素分配行为的影响

借助于多相、多成分系统中平衡计算的手段，开发出微量元素砷、锑、铋及伴生元素铅、锌等在铜熔炼中分配行为的计算机模型。利用该模型对铜熔炼过程进行计算机模拟，分析了冰铜品位对砷、锑、铋、铅和锌等杂质元素的分压、活度系数及它们在冰铜、炉渣和气相中分配率的影响，并讨论其热力学分析结果对生产实践的指导意义。     

China rare earth market review

正November 1~10,2014Chinese rare earth market was still inactive.Demand for rare earth products was weak.Consumers took a wait-and-see attitude for lower price.As it was an off season for rare earth products,it was expected that prices of rare earth could continue turbulence at the bottom in short terms.Due to a sharp drop,demand for rare earth from downstream recovered.Affected by new energy vehicles,wind powder and energy-efficient appliances,production of rare earth permanent     

China rare earth market review

正August 1~10,2014 There was some good news in rare earth industry recently.Restructuring plans of rare earth groups led by Baotou IronSteel Group and Xiamen Tungsten Group respectively have been approved by MIIT.And rare earth storage policy,which had been expected for a very long time,has been launched officially.Pushed by the good news,rare earth price started to rebound since August 5.Price of didymium oxide and dysprosium oxide rose about 1% to 2%,averagely.About 10% of     

China rare earth market review

正July 1~10,2014Due to weak demand from downstream industry and slow transactions,rare earth market remained weak and price of rare earth products continued to decline.There was no sign of recovery in downstream market.The market of NdFeB magnetic materials and phosphor was depressed.Catalyst,