会泽铅锌矿深部矿体工艺矿物学研究

通过合泽铅锌矿深部矿体矿石的工艺矿物学研究，查明矿物组成、主要矿物的嵌布特征以及铅、锌元意的赋存状态，阐明影响选矿工艺的矿物学因素。会泽铅锌矿深部矿体混合矿中，铅、锌矿物既有硫化物又有碳酸盐，脉石也为碳酸盐矿物。闪锌矿、方铅矿、黄铁矿、菱锌矿、白铅矿占总矿物量的72．15％。为提高矿石中铅、锌选矿回收率，矿石分阶段细磨，还应强化对矿石中菱锌矿及白铅矿的回收。     

某金红石矿区富矿体特征及其矿选矿试验研究

在研究刘岗金红石矿区地质特征,金红石富矿体赋存特征,金红石的赋存状态、嵌布特征及粒度变化特征的基础上,采用新的选矿工艺对金红石矿进行了选矿试验.区内金红石富矿体赋存在左老庄组一段上部,含矿岩石主要是黑云角闪片岩和黑云斜长角闪片岩.金红石多呈半自形柱状、短柱状、粒状嵌布在角闪石、斜长石等脉石矿物之间.采用磨矿擦洗-重选-...     

铜绿山深部矿体矿石工艺矿物学研究

通过工艺矿物学研究,查明了铜绿山深部矿体矿石的矿物组成,铜、铁赋存形式,矿石结构、构造及主要金属矿物的嵌布特征.研究表明:深部矿体矿石中的铜矿物以黄铜矿等硫化矿物为主,但其相互交代残余严重,嵌布粒度不均匀,对铜矿物的分选具有不利影响;铁矿物则以磁铁矿和赤铁矿为主,氧化铁的占有率在35.19%,并且氧化铁的嵌布粒度较细,给铁的回收造成一定困难.     

鄂东南某深部矿体矿石特征研究

利用化学多元素分析、化学物相分析、光学显微镜、电子探针等综合手段,对鸡冠咀—桃花嘴深部矿体的矿石进行系统的矿石特征研究,全面掌握深部矿体矿石的化学组成、矿物组成及含量、矿石类型、主要矿物嵌布特征、矿石结构构造、金的赋存状态以及有用元素铁、铜、硫、金在不同粒级中的分布情况等。通过对这些特征的研究,为选矿试验提供科学依据,并为矿山综合利用矿产资源提供基础资料。     

锡铁山铅锌矿深部矿石工艺矿物学评价

锡铁山铅锌矿深部矿体是2006年以后选矿厂的主要入选矿石,文中就深部矿体矿石的化学成分、主要矿物的物相、形态特征及其嵌布关系和嵌部粒度等工艺矿物学做了大量研究,指出了主要技术经济指标的影响因素,为今后选矿厂生产提出了指导性意见.     

锡铁山铅锌矿深部矿石工艺矿物学评价

锡铁山铅锌矿深部矿体是2006年以后选矿厂的主要入选矿石,文中就深部矿体矿石的化学成分、主要矿物的物相、形态特征及其嵌布关系和嵌部粒度等工艺矿物学做了大量研究,指出了主要技术经济指标的影响因素,为今后选矿厂生产提出了指导性意见。     

青海小沙龙铁矿石工艺矿物学和可选性研究

详细阐述了青海小沙龙铁矿矿床的矿床地质特征、矿石的类型及结构构造、主要化学成分、铁物相、矿物组成及含量、主要铁矿物的嵌布特征、磁铁矿的嵌布粒度及解离特征，并对原矿进行了多种选矿工艺流程的可选性对比试验。研究表明磁铁矿大多呈细粒、微细粒稠密或稀疏浸染于脉石矿物中，与其他矿物嵌布关系比较密切；磁铁矿的嵌布粒度比较细，当磨矿细度为-0.028 mm 占85%时，磁铁矿的单体解离度达到85%左右；2段磨矿-2段磁选工艺流程更简洁，能耗和经济效益指标更优越。     

锡铁山深部铅锌矿石工艺矿物学特征及其浮选性能

为高效利用锡铁山深部(-2 702 m)铅锌矿石资源,鉴于工艺矿物学对矿石浮选性能研究的重要指导作用,利用X射线衍射(XRD)分析仪和显微镜照相等测试分析技术,对该矿石进行了详尽的工艺矿物学研究,并探究了矿石的浮选特性。结果表明,矿石中金属矿物主要是黄铁矿,其次为闪锌矿和方铅矿,还可见少量的磁铁矿、褐铁矿、黄铜矿、铁闪锌矿、磁黄铁矿,可综合回收的有价矿物为铅、锌、硫及伴生金银,脉石矿物则以透辉石居多,其次是石英、方解石、绿泥石;方铅矿和闪锌矿分别呈中-细粒及中粒嵌布特征,大部分有用矿物的嵌布粒度在74μm以上,对矿物之间的解离十分有利。浮选试验结果表明,在较粗的磨矿细度下,即可实现矿石中主金属铅锌的高效浮选,实验室利用现有生产工艺处理该矿石,可获得理想的选矿综合指标,试验结果可为生产现场进行深部矿石的选矿生产提供技术依据。     

南京栖霞山铅锌银矿深部矿石工艺矿物学研究

南京栖霞山铅锌银矿随着开采深度不断加深,矿石性质发生了较大变化。为此,通过工艺矿物学研究,查明了深部矿石的化学成分及矿物组成、结构构造、主要矿物的嵌布特性、主要矿物的工艺特征及赋存状态,从而为矿山进行选矿工艺改造以适应矿石性质的变化提供了依据。     

西藏玉龙Ⅱ号矿体氧化铜矿石工艺矿物学研究

西藏玉龙Ⅱ号矿体氧化铜矿石属于复杂难处理的高泥质-高铁质氧化铜矿。本文通过化学多元素分析、物相分析、光学显微镜观察及扫描电镜能谱分析等多种方法,查明了该矿区矿石的主要化学组成、矿物种类、矿物含量及铜矿物的嵌布特征、粒度分布及铜的赋存状态等,为后续选矿试验提供依据。     

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