河北某稀有多金属矿选矿试验研究

河北省某碱性长石花岗岩铷矿,稀有金属以铷为主,伴生有锂、铯、铌、钽。铷和铯以类质同象的形式赋存于钾长石和铁锂云母中,锂主要以铁锂云母形式存在。铌钽主要以独立矿物存在于铌钽铁矿中。采用"弱磁-强磁-浮选云母-长石石英分离"的联合选矿工艺流程,最终可获得Nb_2O_5品位3 241g/t、Ta_2O_5品位1 091g/t、Nb_2O_5回收率54.32%、Ta_2O_5回收率45.45%的铌钽铁精矿。Rb_2O品位11 941g/t、Li_2O品位25 220g/t、Cs_2O品位2 265g/t、Rb_2O回收率28.51%、Li_2O回收率75.89%、Cs_2O回收率54.77%的云母精矿。Rb_2O品位2 276g/t、Rb_2O回收率54.58%的长石精矿以及SiO_2品位98%以上的石英精矿。回收铷等稀有金属矿的同时,云母、长石、石英亦得到了分选回收与综合利用。     

四川某锂多金属矿石选矿试验

四川某低贫锂多金属矿石中主要有用矿物为锂辉石,Li_2O含量为1.20%,伴生的有益组分为铌、钽,Nb_2O_5+Ta_2O_5含量为0.0222%。为确定该矿石的开发利用工艺,对矿石进行了选矿试验研究。结果表明,以自主开发的新药剂EM-PN5为锂铌钽混浮捕收剂,采用浮选—弱磁选—强磁选—重选流程处理,获得了Li_2O品位为5.73%、Li_2O回收率为85.63%,Nb_2O_5含量为0.020%、Ta_2O_5含量为0.028%、Nb_2O_5回收率为30.78%、Ta_2O_5回收率为47.00%的锂精矿;以及Nb_2O_5品位为20.610%、Ta_2O_5品位为16.290%、Nb_2O_5回收率为54.90%、Ta_2O_5回收率为47.34%的铌钽精矿。     

四川某锂多金属矿选矿试验

针对四川某锂多金属矿钽铌回收率低的问题,通过矿石性质分析,采用锂辉石钽铌矿混合浮选—锂辉石精矿磁选—磁选精矿重选回收钽铌的联合工艺,对含Li_2O 1.65%、Ta_2O_5 0.009%、Nb_2O_5 0.021%的原矿进行选别,获得了锂辉石精矿Li_2O品位为5.94%、回收率为85.82%的试验指标,并有效提高了矿石中钽铌矿的回收率。     

国外某锂多金属矿选矿试验

为综合评价国外某锂多金属矿选矿可利用性,开展了选矿全流程试验,确定了锂的回收利用指标,并综合考察了铌钽、铷等有价元素的走向与分布。对原矿品位Li_2O 1.55%、Nb_2O_5 0.0049%、Ta_2O_5 0.020%、Rb_2O0.38%的锂多金属矿,在磨矿细度-0.074 mm 70.3%的条件下,采用高效锂辉石捕收剂EMBH,经"一粗三精二扫"的浮选闭路试验及浮选精矿强磁选试验,获得了Li_2O品位5.93%,Li_2O回收率为68.06%的较好锂精矿指标。含铁铌钽矿物中,铌、钽回收率分别为Nb_2O_5 42.63%、Ta_2O_5 36.55%,铷主要富集在尾矿中,尾矿中Rb_2O分布率为85.70%,为该矿及同类型矿后续进一步综合回收利用提供了有益参考。     

国外某锂多金属矿选矿试验研究

为综合评价国外某锂多金属矿选矿可利用性,开展了选矿全流程试验,确定了锂的回收利用指标,并综合考察了铌钽、铷等有价元素的走向与分布。对原矿品位Li_2O 1.55%、Nb_2O_5 0.0049%、Ta_2O_5 0.020%、Rb_2O0.38%的锂多金属矿,在磨矿细度-0.074 mm 70.3%的条件下,采用高效锂辉石捕收剂EMBH,经"一粗三精二扫"的浮选闭路试验及浮选精矿强磁选试验,获得了Li_2O品位5.93%,Li_2O回收率为68.06%的较好锂精矿指标。含铁铌钽矿物中,铌、钽回收率分别为Nb_2O_5 42.63%、Ta_2O_5 36.55%,铷主要富集在尾矿中,尾矿中Rb_2O分布率为85.70%,为该矿及同类型矿后续进一步综合回收利用提供了有益参考。     

某低品位复杂稀土稀有多金属矿综合回收试验

为综合高效回收利用某含铌、钽、稀土、铷低品位复杂多金属矿,在该矿性质研究的基础上,进行了多种回收方案的分析研究,最终确定采用阶段磨矿—强磁分流—铌、钽、稀土混合浮选—铌钽、稀土分离—黑云母浮选回收铷—强磁尾回收石英、长石的联合选矿工艺流程。试验最终获得了Nb_2O_5品位为19.26%、Ta_2O_5品位为1.98%、Nb_2O_5回收率为35.31%、Ta_2O_5回收率为31.86%的铌钽精矿和CeO_2品位为14.90%(REO品位为39.20%)、CeO_2回收率为23.51%(REO回收率为18.49%)的稀土精矿;同时获得了黑云母(含铷矿物)、石英和长石、部分钛铁矿和磁铁矿,对绝大部分有用矿物实现了分流富集,进行了较好的回收,达到了综合回收利用的目的。     

磁选尾矿综合回收钽铌锂及长石选矿工艺研究

江西宜春地区钽铌锂选矿厂磁选作业排放的尾矿含Li_2O 1.51%、Ta_2O_5 0.031%、Nb_2O_5 0.027%及长石矿物等,具有较好的再回收利用价值。为综合回收尾矿中的有价资源,对其进行了矿石性质和选矿工艺研究。结果表明,采用"‘摇床+铺布溜槽’重选回收钽铌-浮选回收云母-磁选除杂回收长石"的"重-浮-磁"联合工艺,可获得含Ta_2O_5 21.14%、回收率40.92%的钽铌精矿,含Li_2O 4.32%、回收率71.41%的锂云母精矿,含TFe 0.09%、白度75.40%、产率为32.56%的长石精矿。试验指标良好,钽、铌、锂及长石等矿物均得到了较好的综合回收,具有良好的经济和环保效益,为现场工艺优化及同类资源的综合回收提供了有力技术支撑。     

江西宜春低品位锂云母矿综合回收工艺研究

钽铌锂是重要的稀有金属,具有极高的开发利用价值。针对江西宜春地区低品位锂云母矿,开展了钽铌、锂及长石综合回收工艺试验研究。结果表明,针对低品位锂云母矿资源特性,开发了以-CO-NH-为主要作用官能团的高选择性锂云母捕收剂ZL-01,实现了在易于泥化的复杂矿浆体系中锂云母矿物的高效捕收,解决了传统脱泥-浮选工艺造成锂云母矿物流失的难题。以ZL-01作捕收剂不脱泥直接浮选锂云母矿物,浮选尾矿采用螺旋溜槽粗选-摇床精选的重选工艺回收钽铌矿物,重选尾矿采用弱磁-强磁联合的磁选工艺对长石矿物进行除杂提纯。在原矿含0.42%Li_2O、0.004%Ta_2O_5、0.008%Nb_2O_5的情况下,获得了Li_2O品位3.38%、回收率为73.50%的锂云母精矿,Ta_2O_5品位18.530%、Nb_2O_5品位24.120%,钽回收率48.89%、铌回收率36.98%的钽铌精矿,TFe含量(质量分数)0.090%、白度72.40%的长石精矿,实现了低品位钠长石化花岗岩蚀变锂云母资源的高效综合回收。     

某锂多金属矿锂钽铌短流程同步富集与分离试验研究

某锂多金属矿含有锂辉石、钽铌锰矿、云母和长石等资源,采用常规重磁浮流程长、工艺复杂、回收率低。本研究采用高效选择性耐低温捕收剂ML和高效捕收剂MT,开发了一种锂钽铌短流程同步浮选与分离工艺,并回收尾矿中的石英长石。在原矿品位Li2O 1.72%、Ta2O5 0.025%的条件下,获得锂精矿Li2O品位6.55%,回收率71.04%;高品位钽精矿Ta2O5品位18.03%,回收率33.40%;低品位钽精矿Ta2O5品位3.21%,回收率9.00%;以及含Li2O 2.07%的云母精矿和高白度石英长石产品。实现了该锂多金属矿的综合回收。     

某非金属矿钽铌锂铷综合回收选矿试验研究北大核心

甘肃某非金属矿主要矿物组成为石英、长石、云母,矿石中伴生有锂、铷、钽、铌等有价金属。针对矿石中钽铌比重大、具有磁性且矿石泥化严重、云母嵌布特性复杂等性质特点,采用“高梯度磁选、摇床精选钽铌—钽铌磁选尾矿脱泥浮选云母—云母粗精矿和钽铌精选尾矿合并再磨精选云母—云母浮选尾矿进行长石石英分离”的工艺流程,获得了Ta_(2)O_(5)+Nb_(2)O_(5)品位和回收率分别为30.16%、55.85%的钽铌精矿;Li_(2)O、Rb_(2)O品位分别为3.28%、0.59%,回收率分别为92.80%、42.35%的云母精矿;Rb_(2)O品位为0.18%、回收率为49.51%的长石精矿和SiO_(2)品位为99.23%的石英精矿,长石精矿和云母精矿中Rb_(2)O总回收率为91.86%,钽铌精矿和石英精矿可作为合格产品直接销售,云母精矿和长石精矿作为后续冶炼工艺提取锂铷的原料,研究结果为矿石的综合利用提供了技术依据和支撑。     

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,     

New energy vehicle:an opportunity for rare earth magnets

<正>Extracted from Securities Guide 1.Popularity of new energy vehicles—an irresistible market trend1.1 Progress of new energy vehicles Chinese Premier Li Keqiang said recently on a visit to Xi'an BYD Autos that new energy vehicles,especially new energy bus,can lessen environment and noise pollution.He encouraged the use of new     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

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.     

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