高银低铅低锌多金属矿浮选试验研究

某高银低铅低锌多金属硫化矿银品位达到76.28 g/t,含铅0.78%,含锌0.69%。为有效回收矿石中的有价组分,基于系统的工艺矿物学研究,提出高效抑制锌硫,强化回收银铅技术思路,最终确定采用银铅优先浮选—锌硫混合浮选—锌硫分离工艺流程。通过条件试验确定适宜的药剂制度,最终全流程试验获得银品位4 312.2 g/t、银回收率85.19%、铅品位45.28%、铅回收率88.89%的银铅精矿;锌品位45.39%、锌回收率79.09%的锌精矿;硫品位32.17%、硫回收率79.77%的硫精矿。试验指标良好,实现了矿石中银、铅的良好回收,并综合回收了锌和硫,可为同类铅锌矿石的开发利用提供技术依据。     

某银铅锌多金属难选矿石选矿试验研究

通过对某银铅锌多金属矿进行系统的浮选试验研究,确定了采用"硫化银浮选—脱泥—氧化铅浮选—氧化锌浮选"的工艺流程进行有价金属矿物回收。闭路试验可以获得良好指标:银品位为2 300 g/t、回收率为40.87%的银精矿,铅品位为52.08%、回收率为64.45%的铅精矿,锌品位为32.00%、回收率为40.16%的锌精矿,银的总回收率为64.56%。浮选尾矿和矿泥中损失的银可以通过氰化浸出回收,银的浸出率为68.15%。     

云南某高硫高铁铅锌矿浮选分离试验研究

云南某高硫高铁铅锌矿含铅5.80%,含锌18.90%,含硫36.40%,属于复杂难选硫化矿,其中伴生贵金属银含量达80g/t。矿石中主要金属矿物为方铅矿、闪锌矿、黄铁矿等。通过对铅锌多金属硫化矿的浮选分离研究,采用"铅硫混合浮选—铅硫分离—尾矿再选锌"的浮选工艺流程,在磨矿细度为-74μm占70%时,优化药剂条件与添加方式,获得良好的分选指标。获得了铅精矿铅品位58.37%,铅回收率86.02%,锌精矿锌品位为50.25%,锌回收率为94.38%,铅精矿含银430.9g/t,银回收率为44.84%,有价元素得到了有效回收。     

河南某银金铅锌多金属矿选矿试验研究

对河南某银金铅锌硫化物矿进行浮选试验研究。原矿 入选品位 Ag155.40g/t、Au0.88g/t、Pb1.54%、Zn0.90%, 采用“铅 锌 硫”依次优先浮选工艺流程。闭路试验获得的 选别指 标 为:铅 精 矿 产 率 2.47%、含 Ag4681.64g/t、Au 13.87g/t、Pb57.51%,金回收率52.77%、银回收率88.53%、 铅回收率93.46%;锌精矿产率1.93%、金品位5.15g/t、银品 位197.64g/t、锌品位43.64%、金回收率15.31%、银回收率 2.92%、锌回收率84.69%;硫精矿产率3.16%、金品位4.89 g/t、银品位142.64g/t、金回收率23.80%、银回收率3.45%。     

新型无毒有机抑制剂在广西某多金属硫化矿浮选中的试验研究

广西某多金属硫化矿铜铅嵌布粒度细,铅锌品位低,矿石性质复杂。采用铜铅混浮磨矿再分离—铜铅尾矿再浮锌的工艺流程,将自主研发的新型无毒环保有机抑制剂FY09和FY12,分别应用于铜铅混浮精矿抑铅浮铜,铜铅尾矿抑硫浮锌,选别效果较好。闭路试验得到:铜精矿铜品位26.19%、铜回收率88.20%,银品位748.65g/t、银回收率70.53%;铅精矿铅品位55.27%、铅回收率72.16%,银品位1527.43g/t、银回收率18.66%;锌精矿锌品位45.44%、锌回收率84.75%。铜、铅、锌、银有价金属得到有效回收。     

某含金银铅锌硫矿石银铅浮选工艺优选试验

为获得高品质的银铅精矿,对某高硫银铅锌多金属矿石分别进行异步浮选—粗精矿全部再磨浮选、异步快速浮选—中矿集中再磨浮选和分段分速异步浮选—粗精矿部分再磨浮选试验。试验结果表明：在磨矿细度为-0.074 mm 70%的情况下,分段分速异步浮选—粗精矿部分再磨浮选优于其余两种工艺,浮选流程获得的银铅精矿银品位621 g/t、银回收率54.18%,铜品位0.84%、铜回收率34.62%,铅品位62.78%、铅回收率89.42%,锌品位6.45%、锌回收率5.83%。     

内蒙古某银锌矿选矿试验研究（增刊）

内蒙古某银锌矿为含低品位铅锌的硫化银矿石,其中银品位为151.1g/t, 铅、锌品位分别为0.27%和0.56%,硫含量为1.30%,鉴于矿石中铅品位比较低,难以单独富集为铅精矿,采用原矿优先选银（铅）-选银（铅）尾矿锌硫混选-锌硫分离工艺进行试验,最终可以获得银品位为9848.81g/t、铅品位为17.41%,银、铅回收率分别为85.40%和88.46%的银精矿,其中锌含量为4.00%、硫含量为34.77%;可以获得锌品位50.95%,锌回收率为66.71%的锌精矿,其中银、铅和硫的含量分别为801.41g/t、0.44%和33.25%。试验指标比较理想。     

青海某低品位复杂难选铅锌矿石选矿试验

为了确定青海某低品位复杂难选铅锌矿石的选矿工艺,在工艺矿物学研究的基础上进行了选矿试验研究。结果表明,矿石在磨矿细度为-0.074 mm占75%的情况下,采用铜铅混合浮选—混合精矿铜铅硫分离—铜铅混浮尾矿浮选选锌流程处理矿石,可获得铜品位为14.20%、含金26.77g/t、含银466.40 g/t、铜回收率为16.55%的铜精矿,铅品位41.22%、含银63.60 g/t、铅回收率为69.92%、银回收率为16.84%的铅精矿,锌品位为40.96%、含银53.40g/t、锌回收率为67.04%、银回收率为23.13%的锌精矿,以及硫品位为38.41%、含金13.92 g/t、含银163.90 g/t、硫回收率为14.16%、金回收率为23.71%、银回收率为15.92%的硫精矿。     

含金、银低品位铅锌硫化矿综合回收试验研究

针对某低品位铅锌硫多金属硫化矿石的性质特点,经过浮选工艺小型试验研究,采用粗磨—全硫混合浮选—混合精矿再磨—铅锌(硫)分离的原则流程,能获得较好的技术指标。最终获得含铅58.48%,含锌5.62%,含金15.97 g/t,含银12 896.75 g/t,铅回收率77.18%,金回收率35.23%,银回收率80.46%的铅精矿;含铅0.13%,含锌57.85%,含金0.87 g/t,含银196.79 g/t,锌回收率88.95%的锌精矿;含金3.91 g/t,硫42.36%,金、硫回收率分别为46.41%和59.15%的硫精矿,实现了资源综合回收,从而为合理开发该矿石资源提供了依据。     

内蒙古某银锌矿选矿试验研究

内蒙古某银锌矿为含低品位铅锌的硫化银矿石,其中银品位为151.1g/t,铅、锌品位分别为0.27%和0.56%,硫含量为1.30%,鉴于矿石中铅品位比较低,难以单独富集为铅精矿,采用原矿优先选银(铅)→选银(铅)尾矿锌硫混选→锌硫分离工艺进行试验,最终可以获得银品位为9848.81g/t、铅品位为17.41%,银、铅回收率分别为85.40%和88.46%的银精矿,其中锌含量为4.00%、硫含量为34.77%;可以获得锌品位50.95%,锌回收率为66.71%的锌精矿,其中银、铅和硫的含量分别为801.41g/t、0.44%和33.25%。试验指标比较理想。     

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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Annual Report analysis of Chinese rare earth-related listed companies in 2013

<正>Chinese rare earth-related listed companies have published their 2013 annual reports.It can be understood from their reports that production and operation activities of Chinese rare earth-related companies were still heavily affected by macro economy and industrial policies.They basically followed the steps of national economy.In 2013,world economy recovered slowly but the economy     

Market opportunities and challenges for rare earth polishing powder

正1.Status of rare earth polishing powder Rare earth polishing powder with high content of cerium oxide began to replace iron oxide for glass polishing and became one of the key materials in glass polishing process since 1940.Compared with traditional iron oxide,rare earth polishing powder has many advantages,such as fast polishing rate,high polishing quality and long service life.It can achieve good surface quality and improve operation conditions.For example,in lens polishing,the polishing work that cerium     

Baotou Research Institute of Rare Earths developed a new RE alloy preparation technology

正Pyrometallurgy Laboratory of Baotou Research Institute of Rare Earths had independently developed a new preparation technology of rare earth alloy for NdFeB.The alloy can remarkably enhance the coercivity of NdFeB magnet but also evidently reduce the production cost of the magnet.The new master alloy was prepared in the kA pilot-scale electrolytic cell by the independent technology.The rare earth master alloy can be used as the raw material for NdFeB.Compared     

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.