某低品位铜钼矿工艺矿物学及选矿工艺研究

青海某铜钼矿含钼0.084%，铜含量0.067%。工艺矿物学研究表明，原矿中钼主要以辉钼矿形式存在，铜以黄铜矿、辉铜矿及斑铜矿等形式赋存。针对矿石性质，结合探索实验，最终采用铜钼优先浮选工艺处理该矿石。在磨矿细度为-74μm 70%条件下，经一次粗选一次扫选两次空白精选得钼粗精矿，钼粗精矿再磨后经三次精选获得了钼品位50.21%、回收率85.21%的钼精矿；钼浮选尾矿用硫酸铜活化后经一次粗选一次扫选四次精选，获得了品位15.32%、回收率54.92%的铜精矿，实现了有价元素的综合回收。     

某含硫化-氧化铜矿石的选矿试验研究

某矿石属于金属硫化—氧化矿石,含铜、硫、砷等有用元素,原矿中铜品位为0.4%~0.6%,矿石局部氧化造成铜回收困难。本次试验的主要目的是提高该铜矿的回收率和品位。采用优先浮选流程,通过优化试验条件,最终得到铜精矿品位16.10%、回收率为81.87%。     

云南某难选氧硫混合铜矿石的选矿试验研究

云南某铜矿石含铜1.02%,矿石中铜矿物种类复杂,结合率高,钙镁含量高,属典型的难选氧硫混合铜矿石。针对该矿石性质,对该铜矿石进行了详细的选冶试验研究:先将该铜矿强化浮选-反浮选脱钙镁,再将中矿进行加温强化浸出试验。最终确定了较佳的工艺条件为:经过一段磨矿,三次粗选,三次精选的闭路流程回收精矿,全中矿混合浸出,液固比3:1,矿浆温度70℃,搅拌速度300rpm,反应时间2h。研究结果表明,在此工艺条件下,采用混合浮选—强化捕收—反浮选脱钙镁—中矿加温浸出的选冶联合工艺可获得铜精矿品位10%左右,铜综合回收率大于70%,电解铜吨铜耗酸小于20t的技术经济指标。为该类铜矿石的分选提供一种新的途径。     

从西藏某斑岩型硫化铜矿中综合回收铜金浮选新工艺

西藏某斑岩型铜矿中含铜1.10%～1.30%、含金0.04～0.08g/t,矿石中铜矿物以辉铜矿为主、黄铜矿次之,铜矿物嵌布粒度细、且嵌布关系复杂,金主要与铜矿物和黄铁矿伴生,原有工艺铜精矿中的金难以富集到1g/t以上,且铜回收率偏低。为高效综合回收矿石中的铜金资源,开发了低碱条件下"铜硫部分混合浮选"新工艺,并以新型捕收剂ZH-01为铜硫混选的捕收剂,铜硫混选粗精矿经一次精选后,获得合格的铜精矿。实验室小型闭路试验结果表明,在磨矿细度-74μm含量占70%、原矿含铜1.21%、含金0.06g/t的条件下,获得了含铜35.27%、铜回收率94.12%,含金1.11g/t、金回收率56.23%的铜精矿。与现场工艺相比,新工艺不仅提高了铜的回收率,伴生金也得到了综合回收,实现了矿石中铜金的高效综合回收。     

某铜-锌矿石的浮选和分离工艺试验研究

某矿石以黄铜矿、闪锌矿为主,针对该矿石的特征,采用优先浮选铜-再磨-精选铜-铜浮选尾矿选锌的工艺流程进行了选矿试验.在合理的药剂条件下,闭路试验得到了含Cu 18.45%、Zn 5.81%、Cu回收率71.54%的铜精矿和含Zn 50.95%、Zn回收率95.95%的锌精矿.     

某难选铜镍矿石选矿新工艺

某难选铜镍矿石含铜0.27%、含镍0.72%,为实现矿石中铜镍矿物的综合回收与高效分离,本文采用“铜-镍优先浮选”工艺流程,以自主研发的高效铜矿物捕收剂LP-01作选铜捕收剂,石灰作抑制剂,在矿浆pH为8.5的低碱介质中优先浮选铜矿物;浮选尾矿以硫酸铜作活化剂、丁基黄药作捕收剂浮选镍矿物,获得了含铜25.35%、含镍0.79%,铜回收率80.73%的铜精矿,含镍8.15%、含铜0.23%,镍回收率75.41%的镍精矿。试验指标良好,铜、镍矿物都得到了较好的浮选回收与分离。     

西藏玉龙复杂难选硫化铜矿选矿工艺研究

玉龙高品位铜硫矿性质复杂,原矿含铜1.90%,含硫18.32%,铜矿物种类繁多,氧化率较高,此外还有一定的结合铜。铜、硫矿物呈致密状嵌布,嵌布粒度较细,粘土矿物较多,泥化严重,针对该矿石的特点,采用对铜矿物捕收性能较好的BK404作捕收剂,石灰+BD组合药剂抑制黄铁矿及脉石矿物,采用优先浮铜工艺回收铜矿物。结果表明,采用"优先浮铜-粗精矿再磨-精选"工艺可获得铜精矿含铜20.12%,铜回收率74.47%的较好指标。硫矿物及脉石矿物得到很好的抑制,该复杂难选硫化铜矿得到了高效回收利用。     

某难选铜铁矿综合利用工艺研究

研究了某铜铁矿矿石性质,进行了铜矿物粗选、扫选、精选条件及铁矿综合回收试验研究。结果表明:采用铜硫混合浮选、三次精选、四次扫选,铜硫分离一次粗选、三次精选、一次扫选工艺,可以获得铜精矿铜品位16.93%,回收率69.81%;硫精矿硫品位32.80%,回收率53.23%的选矿产品。浮选尾矿进行再磨除硫,获得的铁精矿品位67.49%,全铁回收率61.12%。     

西藏某高泥硫化铜矿选矿试验研究

西藏某高泥硫化铜矿石含铜1.30%～1.60%,铜矿物主要以次生硫化铜矿(辉铜矿、蓝辉铜矿)形式赋存于矿石中,且矿石中含泥量高,铜矿物嵌布粒度较细、嵌布关系复杂,给铜矿物的选矿回收造成了极大的难度。针对该矿石性质,在磨矿细度-0.074 mm含量占75%情况下,采用次生硫化铜矿物高效捕收剂XP-03作铜矿物捕收剂、石灰作矿浆pH调整剂及硫铁矿抑制剂、2#油为起泡剂,经三次粗选获得的粗精矿合并后经一次精选,获得了合格的铜精矿,精选中矿顺序返回至粗选Ⅰ。实验室小型闭路试验结果表明,在原矿含铜1.45%的情况下,采用"铜三段粗选直接抛尾-铜粗精矿精选"工艺可获得铜精矿含铜18.61%,铜回收率为82.52%的较好指标。该研究结果可为该高泥硫化铜矿的高效开发利用提供可靠的技术支撑。     

某复杂硫化铜矿伴生磁铁矿提铁降硫试验研究

某复杂硫化铜铁矿石原矿含铜0.36%,含硫34.32%,含全铁40.07%,其中磁性铁6.20%左右,硫化铜、黄铁矿、磁黄铁矿及磁铁矿共生关系紧密,矿石性质复杂,分选难度大。原生产工艺为经一段磨矿后优先选铜,浮选铜尾矿再磁选回收磁铁矿,但铁精矿中含硫较高,达4%~5%,产品销售困难。在工艺矿物学研究的基础上,采用优先浮选回收硫化铜矿,选铜尾矿磁选回收磁铁矿,磁选铁精矿采用组合活化剂进行活化浮选脱硫。开展了磨矿细度条件、硫化铜矿浮选工艺条件、磁选工艺条件及磁选精矿活化浮选工艺条件等试验。结果表明,在磨矿细度为-0.074 mm占75%的条件下,经一粗二精一扫工艺流程获得了含铜18.59%,回收率为82.00%的铜精矿;选铜尾矿在磁场强度为1 400A/m的条件下磁选选铁,磁选铁精矿采用L1+L2组合活化剂进行活化浮选脱硫,经一粗一扫的工艺流程选别后获得了含铁66.14%,含硫1.03%,磁性铁回收率为64.97%的铁精矿,其中含硫比原生产工艺降低了近4%。     

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