枣阳原生金红石选冶新工艺研究

针对枣阳原生金红石矿,用磁选-重选-浮选相结合的联合工艺流程进行分选,磁选可抛除20~27%的磁性矿物,非磁性产品经螺旋溜槽进行脱泥后进入浮选作业,用SPA和OCT做组合捕收剂,经一次粗选两次精选和两次扫选可得TiO2品位为70.98%,作业回收率为88.60%的浮选精矿。浮选精矿经磁选焙烧酸洗后,可得最终精矿指标为：TiO2品位89.53%,回收率74.78%。     

江苏某低品位蓝晶石矿分选试验

对江苏某低品位难选蓝晶石矿采用脱泥-磁选-碱性介质浮选工艺流程进行了分选试验研究,探索了磨矿、脱泥、磁选及浮选的适宜工艺条件,以此为基础拟定的磨矿-脱泥-强磁选-1粗4精浮选闭路流程处理该矿石,最终获得了Al₂O₃品位为55.13%的蓝晶石精矿。     

枣阳原生金红石矿选冶新工艺

针对枣阳原生金红石矿特点,用磁选—重选—浮选相结合的联合工艺流程进行分选,磁选可抛除20%左右的磁性矿物,非磁性产品经螺旋溜槽进行脱泥后进入浮选作业,用苯乙烯膦酸和正辛醇作组合捕收剂,经一次粗选、两次精选和两次扫选可得TiO_2品位为70.98%,作业回收率为88.60%的浮选精矿。浮选精矿经磁选焙烧酸洗后,最终精矿TiO_2品位为89.53%,回收率为74.78%。     

湖北枣阳金红石矿选矿工艺研究

摘要:湖北枣阳金红石矿因其矿石性质复杂,嵌布粒度粗细不均,长期以来选矿回收率在50%左右,指标较低。通过对该金红石矿石性质的研究,采用脱泥—浮选-磁选原则流程,使用改性活化剂PX进行活化,联合使用选择性较好的捕收剂S.P.A和捕收能力强的脂肪醇O.C.T进行捕收,最终可获得含TTiO2为92.38%,金红石TiO2为89.38%的精矿产品,回收率达到70%以上,指标较好。根据物质组分的研究,矿石中还含有少量石榴子石,对其采用分级摇床工艺进行综合回收,可获得品位为93.3%石榴子石的精矿产品。      

基于磁选预富集的湖北枣阳金红石矿石选矿试验

为高效率、低成本、小污染、高效益地开发利用湖北枣阳金红石矿石资源,根据主要脉石矿物有弱磁性,而金红石无磁性的特点,以高梯度中强磁选预富集工艺为基础进行了金红石选矿试验。结果表明：①在磨矿细度为-0.074 mm占88.60%的情况下,1粗1扫高梯度中强磁选抛尾产率可达29.16%,中强磁选精矿金红石含量为3.07%、回收率为89.50%;②高梯度中强磁选精矿经1粗3精3扫闭路浮选,可获得金红石含量64.53%、回收率为82.21%的金红石浮选精矿;③金红石浮选精矿采用高梯度强磁选-焙烧-酸浸工艺提纯,高梯度强磁选背景磁感应强度为1.2 T,焙烧温度为900 ℃、时间为45 min,盐酸浸出的酸浓度为10%、液固比为1∶5、温度为80 ℃、时间为30 min,最终获得金红石含量为87.88%、回收率为71.21%、TiO2品位为90.12%的金红石精矿。与传统的重选预富集工艺相比,采用磁选工艺可减少细粒金红石损失,提高金红石回收率,为国内金红石资源的高效开发利用提供了一种新思路。     

山东某榴辉岩矿综合利用研究

根据矿石物化特性,采用磁选—重选—浮选—重选—磁选联合工艺流程进行了实验室小型闭路试验,最终得到金红石精矿以及石榴子石、绿辉石、石英-云母粉等产品,从而使该榴辉岩矿得到整体开发利用,能够使矿山生产达到无尾矿排放。     

河南某长石矿选矿试验研究

对河南某长石矿进行了矿物组成分析、物相分析和多元素分析,通过磨矿细度、磁选、脱泥粒度、浮选等试验研究,确定了 “磨矿-脱泥-强磁选-脱泥-反浮选除铁-长石浮选”的工艺流程。结果表明,该选矿工艺最终可获得产率49.98%、K₂O品位11.12%、TFe含量0.20%的长石精矿以及产率12.75%、SiO₂品位96.54%的石英精矿。     

风化细粒钛铁矿及伴生金红石的选矿试验研究

就云南某地风化严重的细粒钛铁矿及伴生金红石进行了选矿试验研究,在采用弱磁选—强磁选工艺不能获得理想的指标后,采用弱磁选—强磁选—还原焙烧—弱磁选—浮选—重选—酸浸的工艺流程,获得了理想产品,铁精矿品位61.08%,回收率6.23%;钛铁精矿TiO2品位49.69%,回收率87.33%;金红石精矿TiO2品位86.57%,回收率11.77%。     

沭阳低品位蓝晶石矿石选矿试验

针对沭阳低品位蓝晶石矿石进行选矿试验,在条件试验的基础上,比较了磨矿-脱泥-先高梯度强磁选后酸性浮选和磨矿-脱泥-先酸性浮选后高梯度强磁选两种流程的选别效果,最终确定采用磨矿-脱泥-先高梯度强磁选后酸性浮选流程,获得了Al₂O₃品位为55.46%、回收率为81.24%的蓝晶石精矿,为该蓝晶石资源的开发提供了技术依据。     

辽宁某红柱石矿工艺矿物学特征及选矿流程选择

对辽宁某红柱石矿矿石性质及工艺矿物学特征进行了研究 ,并通过试验确定了脱泥—浮选—磁选—酸浸的工艺流程 ,得到了符合质量要求的红柱石精矿和磁铁矿 ,红柱石精矿品位达 91.0 2 % ,铁精矿品位 66.3 7%。     

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     

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.     

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.