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。     

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。     

河南某含电气石、长石铌钽矿综合回收试验研究

河南某钽铌多金属矿中Nb2O5、Ta_2O_5含量分别为236 g/t、56 g/t,达到工业开采指标要求;原矿中有用矿物主要为铌钽铁矿,还伴生电气石、长石,脉石矿物则主要为石英、磁铁矿、黑云母等;铌钽铁矿以针状或柱状形式被电气石包裹,嵌布粒度较细;电气石为铁电气石,嵌布粒度粗;长石与石英结合紧密;根据矿石性质,采用阶段磨矿—磁选粗选富集—再磨—重选精选联合流程进行选矿试验,获得产率为0.02%的铌钽精矿,其中Nb2O5和Ta_2O_5含量分别为44.61%和10.29%,回收率分别为37.81%和36.75%;采用重选—浮选工艺对联合流程的磁选尾矿进行分选,获得K_2O+Na_2O含量为11.75%的长石精矿,其产率和回收率分别为36.17%和52.36%;对联合流程的重选尾矿采用摇床分选,获得了B_2O_3含量为8.31%的电气石精矿,其产率和回收率分别为4.90%和55.66%,通过适宜的联合工艺流程,实现了对该矿产资源中钽铌矿、电气石、长石的综合回收。     

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。     

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。     

细晶石为主的钽铌矿石工艺矿物学及可选性研究

矿石为钽、铌稀有金属矿石,并伴生有锂、铍、铷、铯等多种稀有金属。原矿品位为:Ta2O50.017%,Nb2O50.007 6%。钽、铌主要呈独立矿物细晶石的形式存在,其次以铌钽锰矿形式存在。确定了阶段磨矿、阶段分级摇床粗选—磁选脱除铁屑和强磁性矿物的钽、铌选矿工艺流程,获得了(Ta,Nb)2O5品位37.30%,钽铌总回收率43.31%的钽铌精矿,其中钽铌品位以及杂质含量均符合我国钽铌精矿质量标准的要求。     

四川壤塘锂多金属矿石选矿试验研究

四川壤塘锂多金属矿石中主要有用矿物为锂辉石,具有综合回收价值的矿物为钽铁矿、铌铁矿和锡石。根据钽铌铁矿及锡石与锂辉石和脉石矿物的密度差异、钽铌铁矿与锡石的磁性差异以及锂辉石与脉石矿物的可浮性差异,采用分级重选—磁选—浮选联合工艺流程进行选矿试验,获得了锂精矿、钽铌精矿和锡精矿,使矿石中的有价元素得到了较好的综合回收。锂精矿Li2O品位为5.53%,Li2O回收率为72.68%;钽铌精矿Ta2O5和Nb2O5品位为17.00%和32.55%,Ta2O5和Nb2O5回收率为59.38%和66.05%;锡精矿锡品位为52.16%,锡回收率为80.00%。     

河南某铌钽铍稀有多金属综合利用研究

某花岗伟晶岩铌钽铍矿原矿矿物组成较为复杂，金属矿物含量很低，主要为钽铌铁矿、电石气、绿柱石、锡石等，非金属矿物主要为斜长石、石英、白云母、钾长石等。对其进行了综合利用实验研究，原矿通过“强磁选+摇床”工艺流程最终可以得到铌和钽品位分别为41.21%和12.44%、回收率分别为33.81%和31.80%的铌钽精矿；B2O3品位和回收率分别为9.10%和75.85%的电气石精矿；Sn品位和回收率分别为68.85%和72.57%的锡石精矿；有一部分大片云母矿物含量为91.26%的云母精矿。摇床中精矿再经过浮选工艺流程可以得到BeO品位和回收率分别为4.6%和83.20%的绿柱石精矿；云母矿物含量为93.55%的云母精矿；Na2O品位和回收率分别为9.36%和81.85%的长石精矿；SiO2品位和回收率分别为89.22%和49.87%的石英精矿。通过合适的联合工艺流程，实现了对该矿产资源中铌钽矿、绿柱石、电气石、锡石、云母、长石和石英的综合回收。     

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。     

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.