某石英岩型高硫铜钼矿石选矿试验研究

对云南某高硫铜钼矿石的化学成分、矿物组成、嵌布粒度等工艺矿物学性质进行了研究,结果表明:该钼矿原矿钼含量为0.43%,钼矿物主要以辉钼矿形式赋存,矿石钼氧化率较低,嵌布粒度较粗;铜矿物主要以黄铜矿形式赋存,嵌布粒度较细。在工艺矿物学研究的基础上,对比3种常规选别流程,最终确定采用铜钼硫混选再分离流程,获得钼品位58.03%,回收率92.17%的钼精矿和铜品位15.59%,回收率64.84%的铜精矿,以及硫品位37.78%,回收率57.93%的硫精矿。     

低品位铜钼矿选矿技术及应用

内蒙古某铜钼矿矿石中主要有价元素为钼和铜,其品位分别为0.032%和0.165%;铜、钼的氧化率分别为2.44%、0.92%,为原生硫化矿石。根据矿石的特性以及嵌布特性、嵌布粒度,试验对比了两种选矿工艺方案,一种是"铜钼硫混合浮选"方案,另一种是"铜钼部分优先浮选—铜钼硫混合浮选"方案;采用铜钼部分优先浮选—铜钼硫混合浮选—铜钼分离流程,钼粗精矿再磨、多次精选的原则流程。选矿闭路试验所获得的铜精矿产率为0.645%、品位21.66%、回收率84.69%,钼精矿产率0.055%、品位46.78%、回收率80.89%。     

鹿鸣钼铜多金属矿工艺矿物学研究及其选矿工艺路线分析

鹿鸣钼矿特大型钼矿山,矿石中除含有辉钼矿外还含有大量黄铜矿及黄铁矿,对其进行详细工艺矿物学研究,有针对性的制定选矿工艺方案,对于高效综合利用钼、铜、硫资源具有重要意义。采用化学分析、显微镜观察、SEM及EPMA分析等手段,研究了鹿鸣钼铜多金属矿的化学组成、矿物组成、重要金属矿物的嵌布特征、粒度分布及解离特性等,对影响选矿回收指标的工艺矿物学因素进行了分析。结果表明,矿石中钼的赋存状态简单,矿石含Mo 0.108%,其中96.74%的钼以辉钼矿形式存在且嵌布粒度较粗,与其它硫化矿矿物共生不密切,通过浮选可获得理想的钼回收指标;而铜的赋存状态相对复杂,矿石含Cu 0.021%,其中绝大部分铜以黄铜矿形式存在,少部分以辉铜矿、蓝辉铜矿、铜蓝等次生硫化铜矿物形式存在,而且黄铜矿等嵌布粒度细,在辉钼矿能充分单体解离的粗磨矿条件下,黄铜矿单体解离较差,这将会影响铜的浮选指标,泥化严重也会影响指标。根据该矿石工艺矿物学性质特征,该钼铜多金属矿宜采用优先混合浮选硫化钼铜矿—钼铜混合精矿再分离—强化选铜—粗选尾矿强化选硫的选别工艺流程。     

辽宁某硫化钼矿选矿试验

为高效开发利用辽宁某钼矿石资源,在工艺矿物学研究的基础上,对该矿石进行了选矿试验研究。结果表明,该资源为嵌布粒度微细的辉钼矿矿石资源,钼品位为0.217%,有综合回收价值的元素硫主要以黄铁矿和磁黄铁矿的形式存在;磨矿细度为-200目占67%的矿石经2粗2扫浮钼,钼粗精矿再磨至-400目占92.10%后经6次钼精选,钼扫选尾矿1粗1扫2精选硫,中矿顺序返回流程处理,最终获得了钼品位为49.43%、回收率为91.11%的钼精矿,硫品位为53.00%、回收率为73.03%的硫精矿,钼、硫回收指标理想,因此,试验确定的闭路试验流程是该矿石开发利用的合理工艺流程。     

MLA技术在某铜钼矿选矿工艺研究中的应用

MLA是目前世界上最先进的工艺矿物学参数自动定量分析测试系统之一。目前国内MLA技术主要用于指导选矿工艺研究,以要进行选矿加工的矿石为研究对象,为选矿流程提供矿物组成、含量、目标矿物嵌布粒度、磨矿产品解离度、伴生元素赋存状态等信息,指导确定选矿工艺,提高选矿试验研究效率。本研究采用MLA技术指导某铜钼矿选矿工艺研究。根据MLA工艺矿物学研究结果确定选矿工艺和药剂制度,通过条件试验确定详细的工艺参数和各药剂用量,最终在原矿铜品位0.63%、钼品位0.022%的条件下,得到铜品位24.82%,铜回收率91.90%,钼品位35.15%,钼回收率57.56%的选别指标。与现场生产指标相比,铜回收率接近,钼回收率提高12%。     

某细晶型低品位钼矿综合回收试验

河南某钼矿石属于浸染状细晶型钼矿,矿石中Mo品位为0.12%、含Cu 0.04%、含S 2.32%,含量均较低,综合回收难度较大。为有效回收利用矿石中的有价金属,进行了选矿试验研究。工艺矿物学研究表明,矿石中的主要可回收的金属矿物为辉钼矿、黄铁矿和黄铜矿;矿石中的辉钼矿以细板片状、针柱状被石英包裹,粒度细小;黄铜矿与脉石矿物嵌布关系密切,粒径为0.02～0.05 mm;黄铁矿中常包含乳滴状黄铜矿或细粒磁黄铁矿,粒径为0.10～0.70 mm。基于矿石特性,选取实验室研制的辉钼矿捕收剂团聚油、铜抑制剂TY以及非硫化矿抑制剂EMY-01,采用"阶段磨矿浮选分离铜钼—铜钼分离尾矿浮选富集铜—选钼尾矿浮选硫"闭路试验流程,最终获得了Mo品位49.73%、Mo回收率91.17%的钼精矿,S品位50.75%、S回收率90.78%的优质硫精矿,以及Cu品位16.20%、Cu回收率36.45%的铜精矿,指标优异,实现了该细晶型钼矿中有用矿物的分离回收。     

云南某含银铜矿石浮选试验

云南某含银铜矿石铜品位为0.78%,银品位为70.27 g/t,硫品位为19.83%。为了高效开发利用该矿石资源,在工艺矿物学研究的基础上进行了浮选试验研究。结果表明：①矿石中的铜主要以黄铜矿的形式存在,嵌布粒度粗细变化较大,以中粗粒为主,主要粒度为1～0.01 mm,80%以上分布在0.45～0.019 mm粒级;黝铜矿嵌布粒度微细,85%以上分布在-0.037 mm粒级;银主要赋存在黝铜矿中;硫主要以黄铁矿的形式存在。②矿石在磨矿细度为-0.074 mm占80.3%情况下采用2粗1扫流程混浮铜硫,铜硫混合精矿在磨矿细度为-0.037 mm占73.8%情况下1粗2精1扫流程分离铜硫,可获得铜品位为22.37%、铜回收率为90.28%、含银1 221.51 g/t、银回收率为54.72%的铜精矿,以及硫品位为41.86%、硫回收率为90.12%、含银55.75 g/t、银回收率为33.87%的硫精矿,较好地实现了铜、硫、银的分离与富集。     

云南某低品位铜钼矿选矿试验研究

斑岩型铜钼矿是当前提取铜、钼的重要资源,其中铜矿物主要以黄铜矿为主,钼矿物一般以辉钼矿的形式存在。该类矿石中辉钼矿多与黄铜矿、黄铁矿密切共生,此外,由于辉钼矿与黄铜矿的可浮性相似,因此从铜钼矿石中回收辉钼矿难度较大,工艺也较为复杂。本文研究对象为云南某斑岩型铜钼矿,其主要矿物为黄铜矿与辉钼矿,嵌布粒度较细。对该矿进行的选矿工艺研究表明,矿石经过原矿粗磨,粗精矿再磨,1粗2精2扫、中矿顺序返回进行铜钼混浮;铜钼精矿进行脱药再磨,1粗5精1扫、中矿顺序返回进行铜钼分离,最终得到了铜品位25.91%,铜精矿回收率78.68%,钼品位45.79%,钼精矿回收率77.49%的良好指标,有效实现了铜钼分离、铜钼回收的目的,对实际工业生产中同类矿石的分选利用有着积极的指导作用,对我国铜钼矿资源的综合利用亦有着重要意义。     

湿式强磁选-粗精矿酸浸工艺处理某高氧化率钼矿试验研究

某钼矿石中钼品位为0.39%,钼矿物主要为氧化钼和胶硫钼矿,钼的氧化率高达66.67%,钼矿物主要以微细粒度嵌布在褐铁矿中。对比试验发现,相对于原矿直接酸浸工艺,湿式强磁选-粗精矿酸浸工艺的综合能耗更低,工艺处理能力更强,试验取得了钼综合回收率81.69%的指标。     

云南某低品位难选磁铁矿选矿试验研究

云南某铁矿石铁矿物主要以磁铁矿形式存在,但嵌布粒度较细,而且铁品位较低,为20.18%,有害元素硫超标,属较难选矿石。通过对该矿石原矿性质的研究,采用阶段磨矿—阶段选别—反浮选工艺处理该矿石,得到品位为64.15%、回收率为70.67%、含硫0.26%的铁精矿,解决了该铁矿资源品位低、嵌布粒度细、含硫高的问题。     

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.     

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     

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