江西大余某钨锡尾矿云母、长石和石英分离研究

针对江西大余某钨锡多金属矿非金属矿物含量高的特点,以其选矿厂钨锡尾矿为研究对象,试验以硫酸作调整剂,十二胺作捕收剂浮选云母;浮云母尾矿以氢氟酸为调整剂,十二胺为捕收剂浮选长石,浮选长石尾矿即为石英精矿,实现了云母、长石、石英的分离。开路试验获得的云母精矿中Al_2O_3含量为21.54%,SiO_2含量为57.62%,K_2O含量为7.69%,产率为31.17%;长石精矿K_2O+Na_2O品位为13.02%,产率为12.44%,石英精矿SiO_2品位为99.31%,产率为37.60%。云母、长石、石英精矿品质均达到了建材原料使用标准,实现了资源的综合利用。     

云南某低品位铝土矿铝硅浮选分离试验研究

云南文山某低品位铝土矿Al2O3及SiO2含量分别为44.35%、10.52%,Fe及TiO2含量分别为13.36%、4.64%,属于高铁高钛、低铝低硅型铝土矿;可回收铝矿物主要以一水硬铝石相态存在,铁矿物主要包括赤铁矿与针铁矿,钛矿物主要以锐钛矿相态存在,脉石矿物主要为高岭石。对该矿石进行了铝硅浮选分离试验研究,重点考察了捕收剂种类与用量、磨矿细度、调整剂用量、抑制剂种类与用量等条件对浮选效果的影响,确定了以改性组合脂肪酸KYB为捕收剂,硅酸钠+GY 3为组合抑制剂,碳酸钠为调整剂的药剂制度。在磨矿细度为-0.074 mm占90%的条件下,采用“1粗2精1扫”闭路试验可获得铝精矿Al2O3含量为53.34%、铝硅比为9.79、Al2O3回收率为81.62%的技术指标。研究结果可为开发该类铝土矿资源提供技术支撑及借鉴。     

某低品位钾长石矿提纯工艺研究

分析了某低品位钾长石矿的主要矿物成分,K2O+Na2O含量为7.47%。针对该钾长石矿的性质,进行了单一磁选、脱泥-磁选、浮选、脱泥-磁选-浮选四个除铁流程试验,结果表明浮选法除铁效果较佳。试验首先采用阴离子捕收剂十二烷基磺酸钠和石油磺酸钠反浮选除去长石矿中细粒的含铁矿物,再经HF法用十二胺捕收剂对长石-石英进行分离,结果表明,可得产率43.57%、含Fe2O30.25%、K2O13.10%、Na2O0.21%、SiO266.77%的长石精矿和产率41.33%、含Fe2O30.18%、SiO297.66%的石英精矿。      

辽宁某低品位菱镁矿除杂可选性研究

针对辽宁某硅钙杂质含量较高的低品位菱镁矿矿石,采用等可浮反浮选—正浮选强化脱杂工艺进行了除杂可选性研究。其中,等可浮反浮选作业在中性矿浆p H(7.0左右)环境中,以水玻璃为调整剂,BK428(阳离子型捕收剂)为捕收剂,脱除含硅钙脉石;正浮选作业以六偏磷酸钠为抑制剂,BK410B(阴离子型捕收剂)为捕收剂,强化脱除含钙硅脉石。试验结果表明,采用上述工艺流程与药剂制度选别Mg O品位为45.85%、Si O2含量2.40%和Ca O含量0.87%的低品位菱镁矿矿石,获得了Mg O品位为46.81%、回收率为80.78%的菱镁矿精矿,精矿中Si O2和Ca O含量分别降至0.54%和0.69%。     

某低品位镁硅质磷矿石选矿试验研究

采用新型捕收剂TF-64对某低品位镁硅质磷矿石进行了深入研究,采用正—反浮选工艺进行除镁降硅试验,正浮选采用碳酸钠和水玻璃作调整剂,反浮选采用硫酸作为抑制剂,捕收剂均采用TF-64药剂,闭路试验可得到P2O5品位31.04%、回收率81.28%的磷精矿,尾矿中含Si O225.82%,去除率为57.72%。扩大试验连续稳定运行了72 h,可得到磷精矿产率56.15%、P2O5品位30.45%、回收率80.68%的较好指标。本试验所获的选矿指标,为该低品位镁硅质磷矿石的开发利用提供了技术支撑。     

某铷矿强磁尾矿的综合利用试验研究

以某铷矿强磁尾矿为研究对象,通过工艺流程对比、入选粒度、抑制剂和捕收剂筛选等试验研究,最终确定重选-优先浮选联合工艺。试验获得了含铷钾长石、钠长石和石英精矿,其中:钾长石精矿中Rb_2O品位0.177%,产率30.22%;钠长石产品中Na_2O+K_2O含量为10.64%(Na_2O8.32%),产率33.51%;石英产品SiO_2含量为96.21%,产率23.27%。该工艺基本实现了尾矿中全元素综合利用,可有效解决尾矿大量排放和利用率低的难题,实现矿产资源的高效开发利用。     

某低品位红土型铝土矿脱硅提纯选矿试验研究

针对国外某低品位红土型铝土矿进行脱硅提纯选矿试验研究,小型闭路试验研究结果表明,在给矿三水铝石品位52.10%、有效铝硅比3.14、高岭石品位23.3%的条件下,原矿经选择性磨矿-分级,获得了Al2O3品位65.90%、有效铝硅比14.38,有效铝回收率40.12%的+0.15 mm粗粒级精矿;-0.15 mm的筛下产品进入正浮选脱硅作业,以碳酸钠为p H值调整剂、水玻璃为抑制剂、油酸为捕收剂,经1次粗选1次扫选2次精选,中矿顺序返回,可获得Al2O3品位70.90%、有效铝硅比8.36、有效铝回收率为52.29%的浮选精矿;最终综合精矿三水铝石品位68.64%、高岭石含量9.82%,有效铝回收率为92.40%、有效铝硅比11.07,+0.15 mm产品占45.21%,很好地实现了该低品位红土型铝土矿脱硅提纯。     

某地钾长石矿选矿试验及机理研究

介绍了某地钾长石矿的浮选分离试验，并对其机理进行了分析。通过酸法浮选试验，最终得到的钾长石精矿中K2O品位12．31％、K2O回收率68．42％、Fe2O3含量0．09％，精矿产率47．03％。     

对菱镁矿浮选精矿磁选除铁的试验研究

菱镁矿原料中的Fe杂质会严重影响其耐火制品的耐火性能。菱镁矿矿石含2种形式的Fe:类质同象体(Fe2O30.29%)和多种独立铁矿物(Fe2O30.11%),浮选除铁效果不佳。分别以钢网和钢棒为聚磁介质,对海城镁质耐火材料总厂浮选厂的菱镁矿浮选精矿进行除铁试验。结果表明,以钢网和钢棒为聚磁介质,在矿浆质量分数为23%,背景场强为800kA/m的条件下,磁选精矿Fe2O3含量均可接近降铁极限0.29%,此时产率均为62%左右。为使产率大于80%,应选用直径2mm、棒间距1.5 mm的钢棒作聚磁介质,当场强为641kA/m时,磁选精矿Fe2O3含量为0.31%。磁选产品粒级越细,除铁效果越好;磁选精矿中含有未去除的褐铁矿是因为其成分不同——含杂质高而Fe低,比磁化系数小。     

白云鄂博稀土精矿再选提纯试验

白云鄂博北方稀土集团选矿厂浮选精矿REO品位为50.12%,杂质成分CaO、Fe、F和SiO₂含量较高,直接用于冶炼不仅降低会产品的质量,还会降低稀土回收率。为给稀土冶炼工艺升级提供优质原料,对其进行了再选提纯试验。结果表明：以NaOH为pH调整剂、水玻璃为抑制剂、LF8#为捕收剂,经1粗3精2扫,中矿顺序返回闭路浮选,可获得REO品位为65.48%、回收率为92.23%的高品质稀土精矿,满足了后续稀土冶炼工艺升级改造对高品质稀土精矿的要求。     

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     

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     

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.     

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.     

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     

2014 second batch of rare earth quota released

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