铁矿反浮选脱硅的试验研究

对新型阳离子浮选药剂进行了铁矿反浮选脱硅的试验研究。结果表明：在pH=6～12的范围内，新型药剂CS1和组合药剂(CS2：CS1=2)的捕收能力与十二胺相当，但选择性更好。磁选铁精矿反浮选脱硅试验表明：新型组合药剂在获得与十二胺相近的铁品位前提下，铁回收率提高了8．32％。同时对硬水有较好的适应性，铁精矿品位仍可保持在69％以上，回收率90％以上。具有较好的适应性，是铁矿反浮选脱硅的有效捕收剂。     

某铁矿强磁尾矿反浮选回收试验研究

针对我国西部某铁矿强磁选尾矿进行了反浮选回收铁资源的试验研究, 探讨了pH值、抑制剂可溶性淀粉用量、阳离子捕收剂十二胺用量对浮选指标的影响。结果表明, 在矿浆pH=10、可溶性淀粉用量2 400 g/t、十二胺用量400 g/t条件下进行一粗一精(精选药剂用量减半)闭路反浮选, 可获得铁品位43.88%、回收率50.93%的铁精矿产品。     

新型阳离子捕收剂MZ-3的浮选与消泡行为研究

为检验武汉理工大学相关课题组开发的新型阳离子捕收剂MZ-3在磁选铁精矿反浮选中的捕收性能以及消泡行为,以酒钢公司焙烧-弱磁选铁精矿为原料进行了选别和消泡试验。结果表明：①对全铁品位为49.98%的磁选铁精矿进行反浮选脱硅,在pH=7、温度为25 ℃、MZ-3用量为500 g/t、苛性淀粉用量为300 g/t的情况下1次粗选,可获得铁品位为57.01%、铁回收率为74.66%的铁精矿,较好地实现了铁硅分离。②与捕收剂M-302B、醚胺和十二胺相比,MZ-3不仅反浮选精矿产品指标好,而且消泡速度快。因此,MZ-3是一种捕收效果好、易消泡的新型阳离子捕收剂,有利于改善选矿厂的生产指标、提高系统的稳定性。     

重庆巫山桃花铁矿选矿脱泥—反浮选试验

重庆巫山桃花铁矿属于高磷鲕状赤铁矿,为了合理地开发利用重庆巫山桃花铁矿,以获得合格铁精矿。根据其矿石性质特点,试验采用了脱泥—反浮选脱磷—反浮选脱硅联合选矿工艺,得到了铁品位为53.79%,磷含量为0.25%,浮选作业铁回收率为80.10%的铁精矿。     

重庆巫山桃花铁矿选矿脱泥—反浮选试验

重庆巫山桃花铁矿属于高磷鲕状赤铁矿,为了合理地开发利用重庆巫山桃花铁矿,以获得合格铁精矿。根据其矿石性质特点,试验采用了脱泥—反浮选脱磷—反浮选脱硅联合选矿工艺,得到了铁品位为53.79%,磷含量为0.25%,浮选作业铁回收率为80.10%的铁精矿。     

安徽某铁矿提纯制备超级铁精粉试验研究

安徽某铁矿选矿厂现场生产的铁精矿-200目89.83％,铁品位为66.21％.为制备超级铁精矿,对该矿样进行了反浮选试验.结果表明:试样采用1粗1精反浮选,可获得铁品位71.76％、铁回收率75.87％的超级铁精矿,尾矿合并再磨至-200目96.21％后再反浮选流程处理,获得铁品位65.66％、回收率21.16％的浮选...     

阳离子捕收剂烷基多胺醚在尖山铁矿的试验研究

通过试验比较了烷基多胺醚系列捕收剂GE-601,GE-610,GE-609,GE-609与十二胺的捕收性能及其泡沫状况,试验结果表明GE-601是理想的阳离子捕收剂。在不添加其他药剂的情况下,用1粗3扫闭路浮选流程处理铁品位为64．53％的尖山铁矿的粗精矿,获得了铁品位为69．41％、回收率为98．42％的优质铁精矿。     

褐铁矿反浮选脱硅新工艺试验研究

试验针对广东某褐铁矿矿石共生关系简单的特点，采用强化矿浆分散阳离子反浮选脱硅新工艺，即采用碳酸钠用量为1250g／t和水玻璃用量为600g／t实现矿浆的强化分散。在磨矿细度为80％-0．074mm、十二胺用量200g／t、浮选时间18min的条件下，选别该褐铁矿石获得铁精矿铁品位为59．25％、全铁回收率为83．42％的较好指标。     

鞍山某磁选铁精矿阳离子反浮选试验

以六偏磷酸钠、苛性淀粉为调整剂,DEK为新型阳离子反浮选捕收剂,对鞍山某铁矿选矿厂磁选铁精矿进行了反浮选工艺研究。结果表明,以DEK为核心的阳离子反浮选药剂体系与原阴离子反浮选药剂体系相比,药剂制度明显简化,可在中性环境下浮选,浮选无需蒸汽加温至30 ℃左右;采用试验确定的流程和药剂制度处理该磁选铁精矿,可获得铁品位为66.02%、回收率为90.16%的最终铁精矿。     

反浮选新药剂选别袁家村铁矿石试验研究

采用长沙矿冶研究院研制的新型阴离子反浮选捕收剂CSC-68和新型调整剂CSR-36对袁家村铁矿石磁选精矿进行了反浮选试验,并与传统的NaOH +淀粉+CaO+脂肪酸阴离子捕收剂4药剂组合进行了对比。试验结果表明：采用两种新药剂的组合,可获得品位为66.06%,回收率为87.19%的反浮选铁精矿,精矿铁品位和回收率分别比传统4药剂组合高0.96和0.87个百分点。新药剂不仅选别指标优越,而且大大简化了药剂制度,还可避免因使用CaO而引起的管道结垢问题。     

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     

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,     

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。     

Brief news

正China Minmetals Rare Earth Construction of Jianghua Separation Plant is set to complete at the yearend Civil works of Jianghua Separation Plant have been finished and the company is installing and debugging equipments now.It is estimated that construction of Jianghua Separation Plant will be     

Brief news

正Total transactions of rare earth in Rare Earth Ex-change Center of Hunan South Rare and Precious Metal Exchange neared 40 billion yuan from January to October From the opening in January of this year to the end of October,the total transaction of rare earth products in Rare Earth Exchange Center of Hunan South Rare and Precious Metal Exchange neared40 billion yuan.There are 16 varieties including dysprosium oxide and terbium oxide traded on the exchange center,one of the largest trading platforms for rare earth oxides in China.     

Theoretical basis for optimal collector concentrations and pulp pH values during flotation of sulfide-free minerals

A hypothesis that associates optimal conditions of mineral flotation with a zero charge of their surface is put forward. This hypothesis serves as a basis for a methodology to obtain and verify quantitative physical-chemical models for a minimal necessary concentration of a collector during flotation of sulfide-free minerals. These models may be of use for upgrading engineering processes of flotation and as a job for the concentration plant automation systems. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 89–99, March–April, 2006.     

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