新疆某铜镍硫化矿选矿工艺研究

新疆瑞伦某铜镍硫化矿原矿含铜0.14%，含镍0.51%，属于高镍低铜硫化铜镍矿。原矿中铜品位较低，同时含有大量易泥化的滑石、蛇纹石等脉石矿物，给该铜镍矿的高效回收带来不利影响。为高效开发利用该铜镍硫化矿石，进行了系统的选矿工艺研究。实验室小型闭路试验结果表明：在磨矿细度为-74 μm占75%，以碳酸钠为pH调整剂，硫酸铜为活化剂，水玻璃和CMC为抑制剂，Z-200、丁铵、丁黄和戊黄为捕收剂的条件下，经2粗4精3扫铜镍混合浮选，铜镍混合精矿以石灰为pH调整剂、Z-200为捕收剂、BK-204为起泡剂，可获得含铜26.12%、含镍0.55%，铜回收率76.49%、镍回收率0.44%的铜精矿，含镍10.42%、含铜0.39%，镍回收率73.14%、铜回收率9.97%，MgO降至5.88%的镍精矿。试验解决了镍精矿中氧化镁杂质含量较高的问题，提高了精矿质量，可以为现场生产提供理论依据。     

云南迪庆铜铅锌硫化矿浮选分离研究

云南迪庆州铜铅锌硫化矿具有矿物组成复杂、嵌布粒度细且不均匀、分选难度大等特点。针对该地区铜铅锌硫化矿,其含Cu0.93%,Pb1.33%,Zn2.35%,研究分析了磨矿细度、药剂用量、脱药条件等对铜、铅、锌分离的影响。采用"铜铅混合浮选一铜铅分离一尾矿选锌"浮选闭路流程,获得了杂质互含较低且金属回收率较高的铜精矿、铅精矿和锌精矿产品,其中铜精矿Cu品位24.15%,Cu回收率80.57%,铅精矿中含Pb31.63%,Pb回收率65.35%,锌精矿Zn品位40.36%,Zn回收率83.52%。铜铅锌的浮选分离指标较好,为类似铜多金属硫化矿的选矿分离提供了一定借鉴。     

吉林某低品位铜镍硫化矿石选矿工艺优化研究

吉林某铜镍矿石选矿厂采用粗碎矿石按18 mm筛分、筛下产品进行洗矿-重选-浮选、筛上产品进行中细碎-磨矿-异步浮选-重选的工艺处理低品位硫化铜镍矿石,流程长而复杂,但选矿效率低下。对该矿石进行了选矿工艺优化研究,结果表明：采用简单的全矿石单一异步浮选工艺,在-0.074 mm占70%磨矿细度下,可以获得Ni品位为7.47%、Ni回收率为82.57%、Cu品位为2.19%、Cu回收率为91.74%的铜镍混合精矿。与现场相比,不仅工艺流程和药剂制度得到了极大的简化,而且使Cu、Ni的选矿效率分别提高了13.90和5.49个百分点,从而为现场生产工艺的改造提供了依据。     

某难选微细粒铜镍硫化矿选矿新工艺研究

为综合回收某难选微细粒铜镍硫化矿, 采用铜镍等可浮浮选工艺对其进行了选矿试验研究。结果表明, 在-0.074 mm粒级占80%的磨矿细度下以高选择性的铜矿物捕收剂ZP-02预先浮选铜矿物及部分连生交代、可浮性好的镍矿物, 获得的粗精矿精选后以石灰作抑制剂进行铜镍分离, 浮铜尾矿以硫酸铜作活化剂、丁基黄药作捕收剂浮选镍矿物, 获得了良好的试验指标。采用铜镍等可浮浮选工艺获得了含铜21.57%、含镍0.86%、铜回收率为71.18%的铜精矿, 含镍5.57%、含铜0.44%、镍回收率为25.26%的镍精矿1和含镍5.68%、含铜0.34%、镍回收率50.06%的镍精矿2, 解决了传统工艺分选该铜镍矿石指标差的难题。     

云南某铜镍硫化矿浮选试验研究

云南某铜镍硫化矿主要金属矿物有黄铜矿、辉铜矿、镍黄铁矿、含镍磁黄铁矿,脉石矿物主要有蛇纹石、石英。原矿含铜0.88%,含镍0.57%,该矿石属于典型的低品位铜镍硫化矿。为更好地对铜镍矿物充分回收利用,对试样进行试验研究。结果表明,试样在磨矿细度为-74μm占70%,Na_2CO_3用量1 000 g/t,CuSO_4用量200 g/t,六偏磷酸钠用量300 g/t,捕收剂用量150 g/t、松醇油用量40 g/t的条件下,采用两次粗选、两次精选、二次扫选、中矿循序返回流程处理。最终获得回收率为84.39%、品位为4.87%的铜精矿,回收率为78.83%、品位为3.05 g/t的镍精矿。     

越南某低品位硫化铜镍矿选矿试验研究

越南某铜镍矿石原矿品位低、分布分散,原矿含Ni为0.495%、Cu为0.21%,脉石矿物中MgO含量高,矿石性质复杂,属于典型的富含镁硅酸盐矿物的低品位难选铜镍硫化矿石。在对矿石进行充分的工艺矿物学的基础上,实验室采用不预先脱除脉石的情况下,采用二粗二扫四精铜镍混浮工艺,中矿顺序返回的闭路试验,粗二精矿再磨流程,最终可获得铜镍混合精矿含Ni为10.25%,Cu为4.84%,回收率分别Ni为68.84%、Cu为78.76%。     

某硫化铜金矿选矿试验研究

某硫化铜金矿原矿Cu和Au品位分别为3.27%和2.35 g/t, 针对铜的赋存状态及粒度嵌布特点, 进行了浮选工艺研究。确定了最佳试验条件为: 磨矿粒度为-0.074 mm粒级占70%, pH=8.5, 采用BY-309与B-5050组合作捕收剂, 用量分别为110 g/t和55 g/t, 一粗三精三扫闭路试验获得了含Cu 18.87%、Au 13.587 g/t的铜金混合精矿, 铜、金回收率分别达到了92.70%与89.53%, 实现了硫化铜金矿综合高效回收。     

从莱山金矿浮选回收金的研究

采用常规的硫化浮选工艺,从含金的氧化矿中回收金.研究了磨矿细度、硫化钠、碳酸钠、丁基黄药及丁基铵黑药用量对回收金的影响.结果表明,过量的硫化钠对金有抑制作用,采用丁基黄药和丁基铵黑药混合捕收剂能提高金的回收率.在磨矿细度为89.52%-0.074 mm、原矿金品位为5.56 g/t的条件下,经一粗二精二扫选别.可获得金精矿品位为105.9 g/t,金回收率为85.27%的选别指标.     

双龙镍蛇纹石矿脱泥浮选试验研究

针对双龙镍蛇纹石矿进行Ni浮选综合回收试验研究,蛇纹石矿磨矿易泥化,影响Ni浮选指标,通过试验对比表明浮选前需脱泥。探讨摇床脱泥工艺条件,确定了摇床粗选-粗选中矿再选-摇床混合精矿浮选工艺流程。然后通过磨矿细度、浮选药剂制度调整,最终获得了精矿Ni品位8.20%,Ni回收率14.09%的综合利用优良指标。     

混合粗精矿的分步脱硫及铜锌分离

铜锌硫化矿粗磨后混合浮选具有回收率高和成本低的优势,但混合精矿面临铜锌硫分离的难题。云南思茅地区的铜锌硫混合粗精矿,其细度为-74μm含量75%;Cu,2.56%;Zn,5.23%;S,37.21%。采用混合粗精矿再磨-分步降硫-铜锌分离工艺,研究了再磨细度、药剂用量等因素对铜、锌矿物和硫矿物分离效果的影响。当粗精矿再磨细度为-38μm含量90%时,闭路试验获得品位和回收率均较高的铜精矿、锌精矿和硫精矿产品,铜精矿含Cu 20.42%,Cu回收率82.47%;锌精矿含Zn 45.07%,Zn回收率83.88%;硫精矿含S 38.40%,S回收率81.78%。说明对混合精矿先分步脱硫,再铜锌分离可实现各矿物较彻底的分离。本研究可为混合粗精矿的高效浮选分离提供一定的参考。     

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.     

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     

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