处理贫矿和难选矿石的新工艺方案

处理贫矿和难选矿石的新工艺方案１９９３年第９期刊登了Ｂ．Ｈ．Ｍｙ等人撰写的文章。该文综述了全俄矿物原料研究所（ＢＨＭＣ）采用化学冶金或化学冶金－机械选矿联合工艺流程处理组成复杂、难选的矿石和平衡表外矿石的研究成果。拟定了处理难选锡矿石和锡精矿的两种选...     

脉冲电浮法在矿物浮选中的应用理论研究

我国低品位难选矿石是重点开发资源。特别是低品位难选矿石,目前通常采用压热氧化、细菌氧化等技术进行选矿,但这些选矿方式多用于浮选精矿。提高浮选回收率是处理低品位难选矿石的第一关。电化学浮选技术作为浮选技术中的新发展方向,它的深入研究和推广将十分有利于低品位难选矿石的开发利用。     

难选矿石的处理

<正> 难选矿石的处理是一个很复杂的选矿问题。其原因在于这些矿石的物质组成很复杂;矿石中的有色金属矿物很难进行浮选,呈细粒(乳滴状)浸染;磨矿时会产生大量的细粒物料,以及缺少选择性很好的浮选药剂。其中最难选的是铜-锌矿石,含锡多金属     

东星锡矿选矿工艺流程的研究

东星锡矿,矿石性质复杂、矿物种类多、锡石结晶粒度细,属难选锡石多金属矿。该矿石的选矿试验结果表明,采用重-浮-磁选矿工艺流程处理,可以获得较好的选别指标。     

难选多金属矿石联合流程中应用化学冶金过程的现状和远景

<正> 随着富矿资源日趋枯竭,选矿处理的难选多金属贫矿量日益增多。据预测,苏联第十一个五年计划期间此类矿石量将比第九个五年计划增加一倍有余。此种难选矿石的化学矿物组成复杂,有价矿物紧密共生,一些矿物难以回收。例如,在乌拉尔的     

难选氧化铜矿石的处理技术研究

本文论述了难选氧化铜矿床类型,以及目前处理该类矿石的工艺流程及选矿药剂的现状,最后提出了处理难选氧化铜矿石的高效分选技术的发展趋势.     

高磷鲕状赤铁矿选矿工艺研究现状

在分析高磷鲕状赤铁矿矿石性质和资源概况的基础上,较为详细地阐述了传统选矿工艺、磁化焙烧—磁选工艺和深度还原技术在处理高磷鲕状赤铁矿石方面的研究现状,指出传统选矿工艺存在铁精矿品位和回收率低等问题,无法达到高炉冶炼要求,资源浪费严重。磁化焙烧—磁选工艺有利于提高铁精矿品位和回收率,但铁精矿中磷含量仍然较高;深度还原—脱磷或深度还原—富磷工艺等深度还原技术可有效回收高磷鲕状赤铁矿中的铁,是今后高磷鲕状赤铁矿石开发利用的研究方向。     

氧化铅锌矿石选矿方法研究

<正> 会泽矿山厂脉矿和砂矿都是深度氧化、性质复杂的难选氧化铅锌矿石。早在五十年代,曾委托国内外一些单位进行以获得合格铅锌精矿为目的的选矿试验研究工作。因其回收率较低,故未采用选矿方法处理,而采     

我国复杂难选钼矿资源选矿技术进展

我国钼矿资源紧缺已是不争的事实,在易选硫化钼资源日趋减少的情况下,合理开发利用复杂难选钼矿石资源,对于缓解我国钼矿石供需矛盾,以及保障我国有色金属工业经济的安全具有重大意义.本文对我国复杂难选钼矿石资源状况及其选矿技术进展进行了综述,同时针对我国复杂难选钼矿石的性质特点,提出了下一步的研究方向.     

微细粒红磁混合铁矿选矿技术研究及工业应用

针对微细粒红磁混合铁矿矿石性质和多类型复杂矿床特征,采用"四要素"配矿技术,实现了多矿体多矿石类型的精细化配矿,稳定了采出矿石质量。通过选矿试验及装备集成优化研究,确定了适合微细粒复杂难选红磁混合铁矿的选矿工艺,选择了大型高效选矿设备,实现了微细粒铁矿选矿技术的历史性突破。     

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     

矿用防爆轴流对旋主要通风机叶片ANSYS模态分析及应用

高效节能矿用防爆对旋主要通风机的叶片是主要通风机运行的关键部件,叶片在运行时不断受到气流的作用力,从而使叶片产生振动,当叶片振动的频率与叶片的固有频率接近时,容易产生共振从而导致叶片的断裂。一旦叶片断裂时,对主要通风机的安全运行产生致命的影响,从而导致矿山、化工等企业发生重大事故,将会产生不可估量的损失。基于有限元分析软件ANSYS,对高效节能矿用防爆轴流对旋主要通风机叶片进行模态分析及产生对应的六阶模态频率,对主要通风机叶片的运行频率、固有频率及产生的共振问题进行了原理分析,并且解决了叶片频率共振的问题,从而为主要通风机叶片结构设计提供理论依据,并对主要通风机叶片的安全运行提供保障。     

2013 NdFeB export analysis

<正>China totally exported nearly 24,000 tonsof NdFeB products during 201 3,including 18,825 tons of permanent magnet,valued USD 1.34 billion at an average price of 71.4 USD/kg;3,277 tons of NdFeB magnetic powder,valued USD 1 01 million at an average price of 30.9 USD/kg;1,334 tons of strip casting ribbon,with total export value of USD 74million at an average price of 55.3 USD/kg;and 586     

Market and recycling of NiMH battery

<正>Market status and future trend of NiMH battery1.Global market of small NiMH battery Global market size of small NiMH batteries declined year on year since 2011.The trend will continue to 2018,at the rate of 5%to 10%annually.Demand for small NiMH batteries will be stable gradually.Many electrical apparatuses are powered by the built-in lithium battery today,which is the main reason for the shrunk market of small NiMH batteries.But,for some products,small NiMH     

China rare earth market review

正September 1-10,2014 Affected by the National Day holiday,rare earth transaction was stagnant and the market showed a weak steady state.As there was no good news for downstream market,some products with flat demand would likely rally slightly for some time to     

唐口煤矿深部复杂开采工作面瓦斯分源涌出规律研究

研究工作面瓦斯涌出规律对工作面瓦斯治理有重要意义。为了得到唐口煤矿深部3号煤层复杂开采条件下工作面回采时期瓦斯涌出时空演化规律,选取6304工作面作为对象,采用实测方法研究6304工作面瓦斯涌出规律。结果表明:6304工作面瓦斯涌出量为6.534 m³/min,其中煤壁占34.27%,落煤占29.62%,采空区占36.11%;沿工作面倾向由低到高,瓦斯浓度整体为上升趋势,其中1—76号架工作面瓦斯浓度小于0.20%,76—102号架瓦斯浓度上升明显,最大为0.387%;上隅角的后部采空区是工作面的瓦斯主要涌出源,上隅角1号测点瓦斯浓度0.78%,上隅角周边3号、5号、7号、8号、9号测点瓦斯浓度平均为0.643%;周期来压时,上隅角瓦斯相对平时较高。研究为针对性的瓦斯分源监控与灾害防治提供基础。