某高硫铜铅锌矿选矿工艺研究

某高硫铜铅锌矿中含有部分次生铜矿物、闪锌矿及黄铁矿,这部分矿物在铜铅作业段容易上浮,影响浮选指标。因此,针对这两种矿物的有效抑制开展了试验研究。结果表明,试验过程中需要添加一定量的硫化钠来消除次生铜的影响;组合使用石灰、硫酸锌、硫化钠和BK612可以抑制铜铅浮选作业中的黄铁矿及闪锌矿;采用"铅铜等可浮—铜异步强化浮选—锌浮选"流程,能够解决次生铜及黄铁矿的影响,获得铜铅混合精矿和高品质铜精矿及合格锌精矿。     

汉吉兹矿床的多金属矿石选矿工艺的制定

乌兹别克斯坦共和国汉吉兹铜铅锌多金属矿石由于矿物嵌布粒度细,含有次生硫化铜矿物,属于难选多金属矿石.提出了铜--铅混合浮选、铜铅混合精矿分离浮选和从铜铅混合浮选尾矿中浮选闪锌矿工艺流程.在铜--铅混合浮选回路中采用硫酸锌作为闪锌矿的抑抑剂,用丁基黄药和黑药混合浮选铜和铅矿物.在铜铅混合精矿分离中,用活性炭和硫化钠及洗矿后解离矿物表面上的药剂,用硫酸将矿浆调至酸性pH,再用亚硫酸钠作为方铅矿的抑制剂,用黄药浮选硫化铜矿物.用硫酸铜活化闪锌矿,用黄药和黑药捕收剂从混合浮选尾矿中获得锌精矿.该工艺流程获得质量合格的铜精矿、铅精矿和锌精矿,铜、铅和锌的回收率分别为69.2%～72.7%,74.7%～78.5%和80%.     

某难选复杂铜铅锌多金属矿选矿工艺研究

某铜铅锌多金属矿含铜0.10%、铅1.51%、锌2.91%。矿石中矿物种类较多,方铅矿与磁黄铁矿及非金属矿物钙铁辉石、钙铁榴石等关系密切,闪锌矿与黄铜矿、黄铁矿及磁黄铁矿的关系密切,因而较难获得合格的铅锌精矿产品。针对该矿石的特征,采用铜铅组合优先浮选—铜铅分离—铜铅浮选尾矿选锌—铅锌精矿磁选工艺流程,铜铅混合粗选使用水玻璃、石灰、硫酸锌和碳酸钠组合抑制剂,锌精选添加石灰和Ma强化磁黄铁矿抑制剂,分别获得较好的铜、铅、锌产品。实验室小型闭路试验结果为铜精矿含铜20.84%、铜回收率44.54%,铅精矿含铅60.18%、铅回收率88.54%,锌精矿含锌45.70%、锌回收率85.89%。     

某块状硫化物型铜铅锌多金属矿选别工艺优化研究

新疆某复杂难处理铜铅锌多金属矿矿物组成复杂,由于次生铜离子的活化和弥散分布的金银矿物对黄铁矿和闪锌矿的活化作用,造成黄铁矿和闪锌矿具有良好的可浮性,而铅矿物嵌布粒度细,浮游性较差,采用石灰抑制黄铁矿和采用亚硫酸钠抑制闪锌矿时都对铅矿物造成较明显的抑制作用.生产中采用"铜铅混合浮选-铜铅分离-锌浮选"的工艺流程,存在有价...     

阿勒泰某铜铅锌矿提铅降锌浮选工艺

为降低铅精矿中锌的含量,同时实现铜铅的有效分离,采用铜铅混浮—混浮尾矿选锌的工艺流程,以石灰和硫化钠抑制黄铁矿及部分难免离子,乙硫氮和Z-200浮选铜铅矿物。铜铅粗精矿再磨,细度达到-38μm占85%后,采用硫化钠与活性炭联合脱药,组合重铬酸钾与CMC抑制铅矿物,以Z-200浮选黄铜矿,获得含铜20.13%、含铅6.02%、铜回收率85.09%的铜精矿和含铅48.56%、含锌7.54%、铅回收率77.35%的铅精矿,使铅精矿的锌含量由15%降低到7.54%。     

阿勒泰某铜铅锌矿提铅降锌浮选试验

为降低铅精矿中杂质锌的含量,同时实现铜铅的有效分离,采用铜铅混浮-混浮尾矿选锌的工艺流程,以石灰、硫化钠抑制黄铁矿及部分难免离子,乙硫氮、Z-200浮选铜铅矿物。铜铅粗精矿再磨,细度达到-38 μm占85%后,采用硫化钠与活性炭联合脱药,组合重铬酸钾与CMC抑制铅矿物,以Z-200浮选黄铜矿的抑铅浮铜工艺。试验获得了含铜20.13%、铅6.02%,铜回收率85.09%的铜精矿、含铅48.56%、锌7.54%,铅回收率77.35%的铅精矿,使铅精矿中杂质锌的含量由15%降低到7.54%,实现了铜铅、铅锌的有效分离,同时铜铅分离中降低了重铬酸钾的用量,减小了其对环境的破坏,为铜铅分离寻求低毒无毒药剂提供了新的方向。     

某含银复杂铜铅锌多金属硫化矿浮选试验

本文介绍了某铜铅锌多金属硫化矿的浮选试验。矿石中有用矿物为闪锌矿、方铅矿、黄铜矿等,其他矿物有黄铁矿、磁黄铁矿、白铁矿以及少量菱锌矿、铜蓝、铅钒等矿物,并伴生大量的银。本试验采用了铜铅混合优先浮选-混合精矿再磨-铜铅分离-铜铅尾矿再选锌的优先浮选流程,并且综合回收了银。试验中探索了药剂的组合使用,在保证选矿指标的前提下,又节省了成本。。原矿经过一粗-两次混合精选-铜铅分离流程得到铜精矿品位25.65%,铜回收率73.25%,银回收率2.47%;铅精矿品位46.59%,铅回收率87.78%,银回收率82.23%。铜铅尾矿经过一粗二精一扫的流程,得到了锌精矿品位38.19%,锌回收率86.64%,银回收率7.44%,银的综合回收率达到92.14%。     

铜锌混合精矿浮选分离试验研究

铜锌硫化矿浮选分离一直是选矿界的难题.针对铜锌混合精矿嵌布粒度微细、残留药量大、次生铜离子活化闪锌矿的特点进行了浮选试验研究.试验研究结果表明,活性炭和硫化钠配合脱药效果显著,捕收剂乙硫氮具有更好的捕收性和选择性,新型抑制剂FS与硫酸锌、亚硫酸钠组合使用能有效抑制闪锌矿.在铜锌混合精矿中铜品位7.88％、锌品位22.45％的条件下,经过一次粗选获得精矿铜品位为16.85％,回收率为62.50％,精矿中锌互含降到了7.53％.     

某铜锌矿石铜锌分离浮选工艺研究

国内某铜锌多金属硫化矿中次生硫化铜含量较高,有用矿物嵌布粒度细微、嵌布关系复杂。试验采用磨矿-铜锌混合浮选-混合粗精矿再磨-铜锌分离流程对该矿石中的铜、锌矿物进行了选矿工艺技术条件研究。用试验确定的闭路流程处理该矿石,获得了铜品位为22.72%、铜回收率为82.26%的铜精矿,锌品位为57.63%、锌回收率为62.92%的锌精矿;尾矿中黄铁矿的回收研究将留待后续进行。     

广西铜铅锌复杂多金属矿浮选分离试验

广西铜铅锌矿为典型复杂难选多金属硫化矿,黄铜矿与闪锌矿互相包裹、交代共生,在浮选分离时难以获得合格的铜精矿产品。经试验研究,采用“抑锌—浮选铜铅—铜铅分离—铜铅混合浮选尾矿选锌”工艺,以氧化钙、硫酸锌配合实验室新制的锌抑制剂CZ-002抑制闪锌矿和硫化铁矿物,实验室新合成捕收剂CY-2A浮选铜铅。最终闭路试验获得铜精矿铜品位22.48%、回收率70.11%;铅精矿铅品位57.39%、回收率84.84%;锌精矿锌品位51.93%、回收率88.42%。试验指标较好,实现了铜铅锌多金属的有效分离。     

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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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.     

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     

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     

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.