难选富银铅锌矿选矿工艺的研究

针对富银铅锌矿的硫铁矿含量高、易浮,并存在局部氧化的矿石性质,采用自行研发的高效选择性捕收剂YN-1选铅,用组合调整剂石灰和胶体碳酸锌(加在磨机)抑锌、硫,中矿集中返回再磨的工艺流程处理该高硫铁硫氧混合铅锌银矿石,取得了突破性进展.当原矿铅、锌品位均为4%左右,硫品位达36%,铅氧化率34%时,获得铅精矿品位47.18%、铅回收率73.17%,铅精矿含银1684.89 g/t、银回收率65.05%,锌精矿品位40.78%、锌回收率71.69%的指标,比原工艺工业试验指标大幅度提高.     

某含碳高硫铅锌矿综合回收工艺技术研究

新疆某铅锌矿矿石硫含量高,且含有一定量的碳质物,属含碳高硫的复杂难选铅锌矿石。矿石中方铅矿嵌布粒度不均匀,且与闪锌矿、黄铁矿共生关系复杂,严重影响选矿过程中铅锌分离及铅硫分离。根据原矿性质,采用“预先脱碳-铅锌硫依次优先”浮选工艺流程进行试验研究,实现了铅、锌矿物和黄铁矿的高效分离,铅精矿铅品位59.84%,铅回收率88.02%,含锌3.66%;锌精矿锌品位52.34%,锌回收率94.05%,含铅1.45%,硫精矿硫品位50.26%,硫回收率88.13%。     

康家湾矿深部高硫铅锌矿选矿

针对康家湾高硫铅锌矿常规浮选条件下铅锌精矿品位难以达到预期指标、影响经济效益的难题,通过原矿配矿处理、磨矿细度试验、药剂条件试验,确定最终浮选条件,试验取得了较好的浮选效果,最终开路试验获得指标：铅精矿品位66.56%回收率89.52%,锌精矿品位51.21%,回收率91.50%,解决了高硫对铅锌指标的影响。     

康家湾矿深部高硫铅锌矿选矿试验研究

针对康家湾高硫铅锌矿常规浮选条件下铅锌精矿品位难以达到预期指标、影响经济效益的难题,通过原矿配矿处理、磨矿细度试验、药剂条件试验,确定最终浮选条件,试验取得了较好的浮选效果,最终开路试验获得指标:铅精矿品位66.56%、回收率89.52%,锌精矿品位51.21%、回收率91.50%,解决了高硫对铅锌指标的影响。     

云南某高硫铅锌矿选矿工艺流程方案对比试验研究

某铅锌矿含Pb 5.23%、Zn 15.40%、S 24.86%,铅氧化率为3.05%,锌氧化率为0.43%,属于高硫铅锌矿。自开发以来，选厂生产一直采用“铅硫混浮、铅硫分离-浮锌”选矿工艺，现有工艺存在硫精矿锌含量偏高等问题。为进一步提高选矿指标，开展了“铅硫混浮、铅硫分离-浮锌”、“铅锌硫顺序优先浮选”两个不同流程方案的对比试验研究。试验结果表明，“铅锌硫顺序优先浮选”工艺试验指标更优、药剂成本更低、精矿产值更高。采用“铅锌硫顺序优先浮选”工艺，对含Pb 5.34%、Zn 15.59%、S 26.18%的原矿，通过闭路试验获得Pb品位为61.64%、Zn品位为3.37%、S品位为20.15%、Pb回收率为89.34%的铅精矿，Zn品位为51.54%、Pb品位为0.59%、S品位为35.15%、Zn回收率为96.88%的锌精矿，Pb品位为0.53%、Zn品位为0.36%、S品位为47.91%、S回收率为49.79%的硫精矿，成功实现了高硫铅锌矿低碱选矿工艺，值得现场推荐采用。     

某高砷高硫金铅锌多金属硫化矿弱磁选硫试验

某高砷高硫金铅锌多金属硫化矿选矿厂现采用金铅—锌—硫优先浮选工艺,由于原矿中含有大量的磁黄铁矿,恶化了锌浮选效果,导致锌精矿品位低,为了改善锌浮选指标,研究采用弱磁选预先选出磁黄铁矿。为了确定弱磁选的适宜设置地点,进行了入浮原矿、锌浮选原矿、锌浮选尾矿的弱磁选试验,并考查了金、银、铅、锌等有价元素在弱磁选精矿中的损失情况。试验结果表明:锌浮选之前预先选出磁黄铁矿,锌金属损失率较低(8.30%),且弱磁选尾矿中的锌品位可由1.09%富集到1.76%,并可排除磁黄铁矿对锌浮选的干扰,所以在入浮前设置弱磁选作业具有可行性。     

某难选高硫铅锌矿的选矿工艺试验研究

根据某高硫难选铅锌矿石的原矿性质,进行了浮选药剂条件试验和闭路试验研究。采用石灰调浆、硫酸锌抑制锌矿物,混合捕收剂优先浮选铅,在低碱条件下,用新型活化剂X-41活化选铅尾矿,丁黄药选锌,可以实现铅、锌的高效分离,铅精矿铅品位和回收率分别达到60.32%和77.03%,锌含量为7.51%;锌精矿锌品位40.27%、回收率78.13%,铅含量2.47%。     

某含碳高硫铅锌矿综合回收工艺技术

新疆某铅锌矿矿石硫含量高,且含有一定量的含碳质物,属含碳高硫复杂难选铅锌矿石。矿石中方铅矿嵌布粒度不均匀,且与闪锌矿、黄铁矿共生关系复杂,严重影响选矿过程中铅锌分离及铅硫分离。根据原矿性质,采用"预先脱碳—铅锌硫依次优先浮选"工艺流程处理该矿石,实现了铅、锌矿物和黄铁矿的高效分离,所得铅精矿铅品位59.84%,铅回收率88.02%,含锌3.66%;锌精矿锌品位52.34%,锌回收率94.05%,含铅1.45%,硫精矿硫品位50.26%,硫回收率88.13%。     

四川某低品位含铅重晶石矿的浮选试验研究

对含铅重晶石矿进行了化学组成和工艺矿物学研究。对铅与重晶石矿物分别进行了浮选探索与条件试验研究,确定了铅硫混浮-铅硫分离-重晶石浮选的工艺流程。通过确定的选别工艺流程对原矿进行浮选,可获得Pb品位61.43%、回收率81.15%的铅精矿和BaSO_4品位95.95%、回收率97.82%的重晶石精矿,以及产率1.66%、有效硫25.24%的硫精矿副产品。     

某含易浮脉石型复杂铅锌矿浮选试验研究

某铅锌矿原矿Pb品位6.67%,Zn品位13.26%,矿石中含有一定量的易浮脉石——碳质物,同时含硫较高,原矿S品位32.51%,属复杂难选铅锌矿石。矿石中方铅矿嵌布粒度不均匀,且与闪锌矿、黄铁矿共生关系复杂,严重影响选矿过程中铅锌分离及铅硫分离。根据原矿性质,采用“易浮脉石预先浮选-铅锌依次优先”浮选工艺流程进行试验研究,实验室闭路试验获得铅精矿铅品位53.22%,铅回收率85.07%,含锌8.73%;锌精矿锌品位56.19%,锌回收率83.68%,含铅1.23%,实现了铅、锌矿物和黄铁矿的高效分离。     

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     

注浆加固技术在十三矿-685 m进风大巷中的应用

针对煤矿开采深度不断向深部延伸,掘进巷道受深部高应力的影响越来越大,巷道围岩整体稳定性差,矿山压力显现越剧烈现象,一般锚网喷加锚索支护无法从根本上控制巷道的变形。总结了平煤股份十三矿-685 m进风大巷注浆加固技术,依据对巷道掘进之后变形监测数据的采集,对巷道变形机理进行分析研究,并对注浆时段进行了合理选择,在对巷道的注浆工艺进行了充分论证的基础上,对巷道进行了注浆。注浆后效果表明:巷道滞后注浆时间段的选择非常重要,巷道在恰当的时间内进行注浆加固施工,能有效控制巷道的变形,巷道注浆后变形量明显减小,岩体的稳定性明显增强,减少了巷道日常维修工作,降低了矿井的生产成本,保障了矿井的安全生产。     

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 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