某混合铜矿选矿试验研究

四川某铜矿含Cu0.77%,Ag8.2g/t,铜矿物以辉铜矿等硫化铜为主,氧化铜矿物主要为孔雀石,氧化率为16.88%,其中结合氧化铜占10.39%,属于低品位混合铜矿。针对矿石性质,确定了优先浮选硫化矿再浮选氧化矿的浮选工艺。在适宜的磨矿细度和药剂制度下,采用一段磨矿,两次粗选,一次精选,一次扫选的闭路试验流程,最终取得了铜精矿品位为25.76%,回收率为85.74%,含Ag258.21g/t的指标。      

云南某高碳氧化铜矿浮选实验研究

对云南某地高碳氧化铜矿进行浮选实验研究,原矿含Cu 1.52％,氧化率48.06％,含Ag53.1g/t、C0.59％.采用脱碳-浮选和直接浮选对比实验,结果表明直接浮选工艺较合理.闭路实验获得了铜精矿产率4.24％,含Cu 33.46％,铜回收率为82.97％;含Ag 924 g/t、银回收率为73.78％的选别指标.     

某含铜金银多金属硫化矿尾矿资源综合利用试验研究

对某含铜金银多金属硫化矿尾矿进行了综合利用试验研究。该尾矿主要有价元素为Cu、Au和Ag, 含量分别为0.16%、0.36 g/t、62.74 g/t, 主要金属矿物为黄铁矿和黄铜矿, 金、银主要分布于黄铜矿中, 其次分布于黄铁矿中。采用磨矿-铜硫混合浮选-铜硫分离浮选工艺回收尾矿中的有价组分, 开展了磨矿细度、矿浆pH值、分散剂用量、捕收剂用量等浮选条件试验, 确定了相关工艺参数, 闭路试验获得了铜精矿产率0.68%, Cu品位18.96%、Au品位36.75 g/t、Ag品位5286.37 g/t, Cu回收率80.58%、Au回收率69.42%、Ag回收率58.79%;硫精矿产率3.39%, S品位37.16%、Cu含量0.28%、Au含量2.05 g/t、Ag含量306.81 g/t, S回收率78.24%、Cu回收率5.93%、Au回收率19.30%、Ag回收率17.01%;实现了堆存尾矿中Cu、Au、Ag、S等有价元素的高效综合利用。     

某铜银矿浮选试验研究

某铜银矿矿石中有用组分铜含量低,伴生贵金属银含量较高,矿石成分较复杂,金属分布不均匀,含泥较高,氧化铜嵌布粒度较细,属难选氧化铜矿。试验研究了不同磨矿细度、药剂用量和工艺流程条件下的分选效果,结果表明:硫化矿、氧化矿混合浮选铜银矿药剂简单而且指标良好;当原矿磨矿细度达到-0.075mm占90.77%时,相对入选原矿量,在调整剂水玻璃用量500g/t、石灰用量500g/t、硫化剂硫化钠用量300g/t、捕收剂Y89黄药用量100g/t、戊基黄药用量100g/t、丁铵黑药用量80g/t、Z-200用量20g/t的条件下,采用"硫氧混浮一粗三扫三精"浮选流程,闭路试验得到的铜精矿品位为26.89%,铜回收率为89.39%;银精矿品位为2 320.30g/t,银回收率为88.35%。     

组合药剂硫化——浮选某含银氧化铜矿石的试验研究

为了解决陕西某含银氧化铜矿选矿厂铜回收率低的问题，在矿石性质研究的基础上，进行了详细的选矿试验研究。结果表明，原矿含铜1.24%、银37.2 g/t，铜主要以孔雀石和蓝铜矿的形式存在，银主要赋存于氧化铜矿物中。针对目的矿物嵌布粒度细、硫化速度慢、易泥化的特点，以硫化钠+硫酸铵为组合硫化剂，以异戊基黄药+苯甲羟肟酸为组合捕收剂，采用原矿硫化—浮选—中矿集中再磨再选的工艺流程，最终浮选闭路试验获得了精矿铜品位18.09%、铜回收率89.47%、银品位477.56 g/t、银回收率80.60%的良好指标。该工艺为解决氧化铜矿生产中铜、银选别指标差的问题提供了技术依据。     

新型起泡剂W-701浮选铜录山低品位高含泥氧化铜矿石的研究

本文介绍了新型起泡剂 W- 70 1的性能及应用实例。针对湖北大冶铜录山矿低品位高含泥 (- 1 0μm1 0 %～ 2 0 % )氧化铜矿石的特性 ,采用新型起泡剂代替生产中使用的传统型起泡剂 2号油 (松醇油 ) ,大大改善了泡沫性能 ,使铜精矿品位及铜和伴生金银的回收率大幅度提高。工业试验处理含 Cu1 .0 7% (结合铜占 30 % )、含 Au1 .0 1 g/ t(包裹金占 1 0 .7% )、含银 6.2 g/ t的原矿 ,可获含Cu、Au、Ag分别为 2 0 .32 % ,2 0 .72 g/ t,85g/ t的铜精矿 ,相应回收率分别为 71 .60 % ,77.35% ,51 .61 %。与使用 2号油起泡剂相比 ,铜精矿含 Cu、Au、Ag分别提高 5.41 % ,4.78g/ t,2 5.3g/ t,相应回收率提高 7.7% ,4.0 3% ,6.96%。     

云南某高碳酸盐型含银氧化铜矿中铜银同步浮选实验

对云南某高碳酸盐型含银氧化铜矿进行铜银同步浮选实验研究。结果表明,通过闭路实验,可获得铜银精矿Cu品位22.03%,Cu回收率71.69%, Ag品位1095 g/t,Ag回收率81.90%的技术指标。采用此同步浮选工艺可有效选别该含银氧化铜矿。      

缅甸某氧化铜矿选矿工艺研究

针对缅甸某氧化铜矿石特点, 确定了硫氧混合浮选的原则工艺流程, 在条件试验的基础上进行了小型闭路试验, 最终可获得Cu品位23.55%、Ag含量1 919.20 g/t、Cu回收率91.16%、Ag回收率93.08%的铜精矿, 银主要富集于铜精矿中, 有价元素铜和银得到了很好地回收。     

含金铜硫型多金属氧硫混合矿选矿试验研究

云南北衙万硐山含金铜硫型氧硫混合矿,在长时间露天堆放过程中次生硫化铜大部分被氧化,且矿石在自然状态下磨矿后矿浆显酸性,给铜回收和铜硫分离带来较大困难。经对比试验研究:采用在磨矿过程中添加石灰和硫化剂,使可溶性铜以硫化铜的形式沉淀,氧化铜表面转变成硫化物,然后与原生硫化铜一起浮选,提高了铜的回收指标且解决了铜硫分离难题;同时消除了在酸性条件下磨矿引起的铁质腐蚀危害。在原矿品位Au 2.2g/t、Ag 34.20g/t、Cu 0.69%、S 9.57%条件下,获得了品位为Au 59.5g/t、Ag 902g/t、Cu 21.23%,回收率为Au 66.77%、Ag 66.71%、Cu 76.21%的铜精矿及品位为Au 2.65g/t、Ag 39.45g/t、S 47.82%,回收率为Au 12.45%、Ag 12.99%、S 89.54%的硫精矿。该工艺方案合理可靠,可作为进一步技术改造的依据。     

某硫化铅锌矿浮选工艺研究

以甘肃某含银硫化铅锌矿为研究对象,确定了铅锌顺序优先浮选的工艺流程,其中铅浮选作业采用硫酸锌+亚硫酸钠作为组合抑制剂,BK919为捕收剂,锌浮选作业以硫酸铜为活化剂,以丁黄药为捕收剂。结果表明：针对含Pb 1.74%、Zn 2.86%、Ag 24.44g/t的原矿,闭路试验可以获得良好的选矿指标,其中铅精矿的Pb品位为58.25%、含Ag 582g/t,Pb回收率和Ag回收率分别为85.39%和67.58%,锌精矿的Zn品位为45.09%、Zn回收率达到82.05%,实现了矿石中有用金属的高效综合回收。     

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