河南某斑岩型钼钨矿床中钼钨的赋存状态和工艺性质研究

<正> 河南某斑岩型钼钨矿是我国重要的钼矿床,已探明的钼金属量占全国总储量的1/3,矿床中伴生钨达数十万吨,又为大型钨矿床。研究表明,该矿床中主要金属矿物为辉钼矿、白钨矿;主要非金属矿物为石榴子石。钨主要赋存在白钨矿中,钼主要赋存于辉钼矿中。矿石以粒状、镶嵌、叶片状为主要结     

某铜钼钨矿石选矿试验研究

对某含铜钼钨矿石进行了浮选分离工艺研究。该矿石为钨重选毛砂,除钨矿物外,还富含铜、钼等有价金属硫化矿物。根据矿石性质,采用铜钼混合浮选—铜钼分离的浮选工艺,综合回收矿石中的钨、铜、钼。铜钼混合浮选时,采用高效活化剂BK546,有利于矿石浮选脱硫,提高铜钼回收率,并减少钨的互含损失。闭路试验获得钼精矿含钼57.90%、铜0.68%、钼回收率96.44%;铜精矿含铜37.32%、回收率99.64%;钨精矿含WO₃ 68.12%、铜0.025%、钼0.005%、钨回收率97.30%。实现了矿石中钨、铜、钼的有效分离回收。     

河南某钼矿尾中钨钼硫的选矿回收试验

在对河南某选钼尾矿矿石性质研究的基础上,进行了钼、硫、钨矿物选矿综合回收研究。研究结果表明,该矿样磨至-200目占70%时,经钼、硫、钨优先浮选闭路流程处理,最终可获得钼品位为48.35%、回收率为61.24%的钼精矿,硫品位为38.72%、回收率为84.81%的硫精矿,钨品位为48.70%、回收率为78.16% 的钨精矿。     

广东石人嶂云英岩矿石工艺矿物学研究

本文对广东石人嶂云英岩矿石进行了详细的工艺矿物学研究.研究结果表明,矿石中的铜、钼、铋、钨、锡等金属矿物以及石英等非金属矿物具有较高的利用价值.依据矿石性质,可采用浮选铜、钼、铋、白云母,再回收钨、锡的选矿工艺.该矿石有用矿物多,综合回收效益高,符合我国政府提倡的循环经济产业政策.     

赣北某钨钼矿钨矿石工艺矿物学研究

为了给赣北某钨钼矿的选矿工艺流程选择提供依据,采用显微镜、化学分析、XRD分析等分析测试手段对钨矿石进行了工艺矿物学研究。研究表明,矿石矿物成分复杂,主要有用矿物为黑钨矿、黄铜矿、白钨矿、辉钼矿等。矿石主要有用元素为钨,WO3含量0.264%,可以进行回收利用,伴生铜、钼等也可以综合回收利用。钨主要以黑钨矿和白钨矿形式存在,二者关系密切;伴生铜、钼主要以硫化物形式存在。黑钨矿以半自形板状和它形晶粒状沿石英裂隙及间隙不均匀分布,并受黄铜矿、白钨矿等中后期矿物交代。钨矿物可采用分级重选工艺回收,铜、钼可采用多段磨选工艺综合回收。     

安徽某低品位钨钼矿石选矿试验

安徽某钨钼矿钨、钼品位低,有用矿物辉钼矿和白钨矿嵌布关系复杂、嵌布粒度不均、单体解离困难,属低品位多金属矿床。为合理开发利用该矿石,进行了优先浮选选矿试验。结果表明:在磨矿细度为-0.074 mm 60%的条件下,采用1粗2扫4精选钼(钼3次精选前再磨至-0.038 mm 95%)、钼扫选尾矿1粗2精(加温精选)2扫选钨、中矿顺序返回的闭路流程处理该矿石,在最优药剂制度条件下,可获得钼精矿钼品位为44.60%、含钨0.45%、钼回收率为60.23%,钨精矿钨品位为63.93%、含钼4.90%、钨回收率为85.24%的良好指标。该工艺方案为开发利用该矿石提供了技术依据。     

第六章 钨-钼矿石的选矿

第一节总论钼和钨常互相共存于矿石中,甚至形成含两种元素的矿物。从矿物学上看钼和钨的主要差别是硫化钼——辉钼矿分散性大,而硫化钨却矿化现象少。钨和钼的氧化矿物——钼钙矿和白钨矿以及黑钨矿的结构和浮选特性相近。钼和钨矿物的共同性是比重大。存在两种钼和钨伴生矿石的成因分类:1)在石英矿脉中含有或与云英岩伴生的辉钼矿、黑钨矿和黄铁矿的热液矿床;2)由硅酸钙、硅酸铁和硅酸铝构成的斯卡隆矿石。斯卡     

某铜钼钨矿石浮选分离试验研究

对某含铜钼钨矿石进行了浮选分离工艺研究。试样为钨重选毛砂,除钨矿物外,还富含铜、钼等有价金属硫化矿物。采用铜钼混合浮选-铜钼分离的浮选工艺,综合回收试样中的钨、铜、钼。铜钼混合浮选时,采用高效活化剂BK546,有利于降低钨精矿的硫含量,并提高铜钼回收率。闭路试验获得钼精矿含钼57.90%、铜0.68%、钼回收率96.44%;铜精矿含铜37.32%、铜回收率99.64%;钨精矿含WO368.12%、铜0.025%、钼0.005%、钨回收率97.30%。实现了矿石中钨、铜、钼的有效分离回收。     

广西某低品位钨钼矿石选矿试验研究

广西某低品位钨钼矿石中主要有用矿物为辉钼矿和白钨矿,还有少量黄铁矿、磁黄铁矿,脉石矿物主要为辉石、石榴石、石英等。矿石经钼硫优先混合浮选—混合精矿再磨钼硫分离—混浮尾矿再选钨闭路试验,获得了钼品位为50.386%、回收率为91.17%的钼精矿,硫品位为36.782%、回收率为56.43%的硫精矿,WO3品位为60.366%、回收率为68.94%的钨精矿。     

河南某钨钼矿石工艺矿物学研究

为给河南某钨钼矿选矿工艺流程优化研究提供理论依据,采用显微镜、MLA、X-射线衍射和电子探针等分析测试手段对有代表性矿石进行了工艺矿物学研究。结果表明:1矿石Mo、WO3品位分别为0.09%和0.13%,可回收利用的金属矿物有白钨矿、辉钼矿和含钼白钨矿。2钨、钼主要以白钨矿、钼钨钙矿和辉钼矿形式存在,硫化钼矿可采用浮选工艺回收;氧化钼钨矿则只能与白钨矿共同富集成钨钼混合精矿。3辉钼矿的嵌布粒度比白钨矿粗,相同磨矿细度下的解离度也较高。4绿泥石、透闪石、方解石等易泥化矿物和黄铁矿等硫化矿物的存在将影响钼钨选别指标。     

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