绒毯溜槽工艺在钨锡矿山应用实践

绒毯溜槽用于回收钨锡尾矿中的有用矿物,具有回收粒级宽,富集比高,投资小,见效快,技术简单,利润高的特点。瑶岭钨矿用两段绒毯溜槽,从含WO_30.05%～0.076%、Sn0.004%～0.006%的重选尾矿中,获得含WO_320%～30%,Sn1.0%～1.5%的钨精矿,提高WO_3总回收率2%。厚婆坳锡矿用绒毯溜槽粗选,摇床精选,可从含Sn0.2%～0.3%的重选尾矿中,获得含Sn60%～65%的锡精矿,提高锡总回收率4%～6%。     

江西某钨锡混合精矿浮选分离试验研究

江西某钨锡选厂重选粗精矿WO3和Sn含量分别为25.20%和19.03%,钨主要以黑钨矿的形式存在,锡主要以锡石矿物产出。为实现该混合精矿中钨矿物与锡矿物的有效分离,以该钨锡混合精矿为研究对象,进行了钨锡分离试验。结果表明,采用"抑锡浮钨"的浮选工艺流程能较好地分离该混合精矿中的钨矿物与锡矿物,1粗3精2扫闭路试验流程处理试样,获得了WO3品位为55.64%、回收率为88.43%的钨精矿和Sn品位为40.53%、回收率为98.20%的锡精矿,钨精矿含Sn较低,仅为0.32%,分离指标较理想。     

从多金属矿中综合回收钨锡选矿新工艺研究

某钨多金属矿中伴生的锡矿物品位低于0.15%难以有效回收,经磁浮选别后,硫化矿的浮选尾矿中WO3品位为0.45%和Sn品位为0.11%.对硫化矿浮选尾矿进行钨锡混合浮选,钨锡混合浮选精矿经重选富集,在Na2CO3为调整剂、YD为抑制剂、Pb(NO3)为活化剂、WB与WP为组合捕收剂的条件下,小型试验最终得到:品位62.24%的WO3和品位5.38%的Sn,钨回收率62.20%、锡回收率24.03%的钨锡混合精矿;WO3品位为35.11%、钨回收率为10.92%的钨精矿,总钨回收率为73.12%,达到了回收钨矿物的同时综合回收锡矿物的目的.     

新疆某难选钨锡矿石选矿工艺研究

新疆某钨锡矿石可回收的有价元素主要为钨和锡。矿石WO_3含量为0.63%,钨主要以黑钨矿的形式存在,92.76%的钨存在于黑钨矿中;Sn品位为0.24%,78.26%的锡存在于锡石中。矿石钨、锡矿物种类多,且容易过粉碎;脉石矿物有褐铁矿、电气石、孔雀石、磁黄铁矿、绿泥石等中等密度的矿物,这些矿物的磁性与黑钨矿相近,增加了钨、锡分选的难度。为实现该钨锡矿石的有效回收利用,开展了选矿工艺研究。结果表明:矿石磨细至-1.0 mm条件下,采用粗选段分粒级单一重选、精选段脱硫—重选—磁选—中矿再磨—重选的工艺流程进行选别,获得的钨精矿WO_3含量为65.23%、对原矿回收率为78.04%,锡精矿Sn品位为42.40%、对原矿回收率为66.04%,实现了钨、锡资源的有效回收。     

某重选钨锡混合精矿精选分离试验研究

某钨锡多金属矿原矿锡品位低于0.1%,因原矿锡品位低、可浮性差,采用摇床回收钨精选尾矿中的锡矿物,获得重选钨锡混合精矿.该重选钨锡混合精矿品位WO341.09%、Sn7.50%,WO3、Sn金属主要分布在0.010~0.045mm粒级.对该混合精矿进行试验方案比较后,本研究采用自主研发的脂肪酸类捕收剂TA-3药剂以及“白钨浮选-湿式磁选”工艺,获得了白钨精矿品位WO351.39%,WO3回收率44.43%;黑钨精矿品位WO345.09%,WO3回收率47.71%;钨锡混合精矿品位WO315.41%、Sn23.05%,WO3回收率7.86%、Sn回收率64.48%,达到了获得较高Sn品位精矿的目的,为后续分离和利用创造了有利条件.     

某含碳铜钨锡多金属矿选矿试验研究

针对Cu品位0.91%、WO_3品位0.25%、Sn品位为0.21%的某含碳铜钨锡多金属矿,采用优先浮铜工艺流程,通过闭路试验获得了产率为3.22%,Cu品位为25.11%、Cu回收率为89.16%的铜精矿;浮铜尾矿采用浮选脱硫-重选-强磁分离工艺流程回收锡、钨矿物,获得了WO_3品位为46.05%、Sn含量为3.80%、WO_3回收率为42.46%的黑钨精矿和Sn品位为58.03%、WO_3含量为6.25%、Sn回收率为42.07%的非磁精矿。与现场生产指标相比,铜精矿Cu品位提高了8.11个百分点;WO_3综合回收率提高了5.49个百分点,Sn回收率提高了4.07个百分点。     

广西某钨锡细泥选矿试验

广西某钨锡矿选厂采用双曲波细泥摇床重选水力分级溢流,由于入选粒度微细,导致大量的钨锡矿物流失在尾矿中。为了充分回收其中以黑钨矿和锡石为主的钨锡矿物,以探索试验结果为基础,采用旋流器分级-悬振锥面选矿机重选沉砂-重选精矿浮选脱硫砷-重选尾矿与旋流器溢流合并浮选脱硫砷后再混合浮选钨锡流程对该尾矿试样进行再选试验,所获钨锡混合精矿的WO3、Sn品位分别为10.96%和6.82%、回收率分别为77.49%和63.79%。因此,粗细分级分选、重-浮联合选矿工艺流程是该尾矿的高效再选流程。     

云南某钨锡矿选矿试验研究

云南某钨锡矿含钨0.323%,锡0.140%,二氧化硅63.13%,三氧化二铝17.44%,氧化钙2.92%,氧化镁2.44%,在矿石工艺矿物学及试验研究的基础上,采用一段磨至-0.5mm,针对不同的床型,开展水力分级,进行摇床粗选,混合精矿脱硫、除铁、常温浮选分离钨锡的选矿工艺,获得了钨精矿产率0.31%,钨品位71.06%,钨回收率67.69%,含锡0.56%;锡精矿产率0.12%,锡品位58.18%,锡回收率50.94%,含钨3.80%,锡富中矿产率0.21%,锡品位4.22%,锡回收率6.87%,含钨2.69%,综合锡回收率57.81%的技术指标。     

云南某低品位钨锡矿选矿试验研究

云南某钨锡矿含钨0.323%,锡0.140%,二氧化硅63.13%,三氧化二铝17.44%,氧化钙2.92%,氧化镁2.44%,在矿石工艺矿物学及试验研究的基础上,采用一段磨至-0.5mm,针对不同的床型,开展水力分级,进行摇床粗选,混合精矿脱硫、除铁、常温浮选分离钨锡的选矿工艺,获得了钨精矿产率0.31%,钨品位71.06%,钨回收率67.69%,含锡0.56%;锡精矿产率0.12%,锡品位58.18%,锡回收率50.94%,含钨3.80%,锡富中矿产率0.21%,锡品位4.22%,锡回收率6.87%,含钨2.69%,综合锡回收率57.81%的技术指标。     

重磁浮工艺在砂锡选矿厂的应用

<正> 个旧市新建锡矿选矿厂一直采用以摇床为主要设备的重选流程处理残坡积砂锡矿。近年来,原矿中钨、铁等矿物含量升高,用摇床产出合格锡精矿,锡回收率急剧下降,尾矿中钨的损失增加。为此,用摇床提高锡回收率,在产出合格锡精矿的同时,接取含锡8～10％的次精矿,将钨矿物最大限度地回收在其中。次精矿干燥后用干式强磁选机精     

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