江西某钨锡重选尾矿综合回收石英和长石试验研究

针对江西某钨锡重选尾矿中石英、长石、云母含量高的特点,试验采用磨矿—磁选除铁—脱泥—云母浮选—石英与长石浮选分离的无氟少酸工艺综合回收石英和长石。在试样磨矿细度?0.074 mm含量占73.20%、磁场强度为1.0 T条件下进行磁选除铁,非磁性产品采用静置—虹吸方法脱去?0.020 mm细泥。磨矿—磁选—脱泥等预处理后的样品采用碳酸钠调整矿浆pH=10.5、捕收剂YF-1用量240 g/t 和十二胺用量80 g/t 联合浮选云母。对云母浮选尾矿以Ba2+用量120 g/t活化石英、YF-2用量250 g/t 抑制长石、捕收剂YF-1用量250 g/t 进行石英与长石的浮选分离。石英浮选尾矿即为长石精矿 ,石英精矿通过酸法反浮选长石工艺得到石英精矿和长石副产品。试验获得石英精矿产率25.30%,SiO₂含量99.20%,石英矿物回收率50%;长石精矿产率22.69%,K₂O+Na₂O含量13.16%,长石副产品产率7.68%,K₂O+Na₂O含量9.23%,长石矿物总回收率约79%;云母精矿产率14.50%,K₂O含量7.65%,Na₂O含量1.65%,Al₂O₃ 含量16.40%,云母矿物回收率85%。      

安徽某长石石英砂矿除铁试验

针对安徽某地长石矿经处理后,长石中铁平均含量为0.455 8%,经磁选除铁也难以达到铁含量小于0.2%的情况,华唯金属矿产资源高效循环利用国家工程研究中心有限公司采用磁选—浮选工艺流程进行了除铁试验。在MD浮选捕收剂用量为800 g/(t.原矿)时,选别后长石精矿平均产率为78.35%,长石精矿中铁含量降至平均0.144 0%,获得了满意的除铁效果。     

栗木锡尾矿中云母、长石、石英浮选分离试验

栗木锡矿选矿厂重选尾矿经强磁选脱铁,非磁性物中石英、钠长石、钾长石及云母矿物含量合计达98%,为充分、高效利用该二次资源,进行了浮选分离工艺研究。结果表明,在不磨矿、硫酸调酸的情况下,采用1次云母浮选、1粗3扫3精浮选长石、中矿顺序返回流程处理矿样,获得了K_2O与Na_2O总含量达10.18%、长石矿物含量达90%的长石精矿,SiO_2含量达93.71%、石英矿物含量达85%的石英精矿,以及云母矿物含量达90%的云母精矿。石英精矿、长石精矿、云母精矿品质均满足工业应用要求。探索了一条实现栗木锡矿非金属矿物绿色、高效资源化利用的途径。     

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。     

无氟碱浸石英长石分离工艺研究

本文对所选用的石英砂进行了理化性能检测和石英长石分离工艺研究。试验采用重选、磨矿、磁选、碱浸、擦洗、无氟浮选等工艺,将长石和石英基本分离,石英最终精矿的SiO_2含量为98.22%,Al_2O_3含量为0.96%,Fe_2O_3含量为0.056%,满足浮法玻璃和一般器皿玻璃的技术指标;长石最终精矿的Al_2O_3含量为17.50%,Fe_2O_3含量为0.24%。已经可以用作平板玻璃、陶瓷工业原料。     

某锡尾矿长石、石英无氟分离试验研究

采用无氟工艺对某锡尾矿进行了长石、石英分离,将石英中Si O2含量从77.82%提高到93.71%,同时长石中K2O+Na2O含量从6.67%提高到10.18%,为该尾矿的资源综合利用提供了依据。     

平江某长石矿重磁浮流程试验研究

本文研究了不同重选、磁选、浮选组合流程对某长石矿提纯精矿白度和含铁量的影响。结果表明:通过磁选-脱泥-浮选流程能得到产率69.52%,Fe_2O_3含量0.008%,白度70.32%的长石精矿;通过脱泥-螺溜重选-中矿再溜-磁选流程得到总产率74.51%,Fe_2O_3含量0.025%,白度高于65%的长石精矿。与磁选-浮选联合工艺相比,重选-磁选联合工艺可获得产率更高,且各项符合日用陶瓷用长石要求的长石精矿。     

玻璃工业用长石选矿除铁试验研究

对东海某长石原矿进行了选矿除铁试验研究。采用三段闭路破碎和棒磨控制筛分流程,加工出粒级满足玻璃用长石原料。经过一段擦洗、两段高梯度磁选、一段浮选的选矿加工工艺,产出68.77%的长石精矿、Fe_2O_3含量仅为0.10%,满足玻璃用精白长石原料质量要求,使长石资源得到高效利用。     

湖南某钾钠长石矿选矿试验

湖南某长石矿矿物组成复杂,主要有用矿物为长石和石英。为开发利用该矿石,对其进行了选矿试验研究。结果表明：在磨矿细度为-0.074 mm占62.36%时,原矿经脱泥-脱石英浮选后,以硫酸为调整剂、N-烷基丙撑二胺+石油磺酸钠为捕收剂经1粗2扫长石-石英分离浮选,获得了Al₂O₃含量为18.68%的长石浮选精矿和SiO2含量为98.35%的石英浮选精矿;长石浮选精矿经1粗1精磁选除铁获得了Al₂O₃含量为18.68%、Fe₂O₃为0.18%、Na₂O+K₂O为12.28%的长石精矿,达到了陶瓷工业的一级质量标准;石英浮选精矿在0.35 T条件下磁选除铁后获得了SiO₂含量为98.35%、Fe₂O₃为0.076%的石英精矿,满足玻璃工业二级质量要求。     

卢氏风化型长石矿地质特征及综合利用方向探讨

豫西卢氏县西南部出露大面积的燕山早期二长花岗岩，多期次构造活动使岩体发生局部破碎、次生裂隙发育，水流沿岩石裂隙入渗加剧了风化作用，最终形成风化型长石矿床。经筛分、磁选除铁、重选脱泥、浮选长石石英分离的选矿流程，结果表明：长石精矿K2O含量6.91%,Na₂O含量5.86%,TFe含量0.146%；石英精矿SiO₂含量95.41%,TFe含量0.06%,满足工业利用要求。探讨指出矿石选矿各阶段产品高效、绿色、综合利用方向。长石精矿、石英精矿、砂石骨料可作为矿产品出售，浮选尾矿可尝试生产免烧砖，选矿过程中产生的废泥可被后期矿区生态修复直接利用，高磁性废渣可作为填料回填路基。通过对矿床地质特征、成因及综合利用方向的探讨，可以为区域合理开发矿产资源提供一定参考。     

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 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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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.     

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     

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     

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.