细粒宽级别自重介跳汰分选的研究

本文把细粒跳汰和重介质选矿原理有机地结合起来加以阐述,特别强调了跳汰中间紧密层的重介质作用及跳汰脉动对重介质选矿的强化作用,并据此设计了细粒宽级别自重介跳汰分选装置。研究结果表明:当用设计装置分选-0.074毫米、磁铁矿与石英之比为1:1的人工混合料时,获得了精矿铁回收率95.32％、铁品位68.93％的良好指标,用实际矿物加以验证,同样取得了满意的结果。从而实现了微细粒物料在深水层中的重选。     

跳汰粗精煤再选工艺的应用

跳汰粗精煤、跳汰中煤再洗工艺可以弥补跳汰机对难选煤分选精度低、产品损失、污染等不足。同时由于跳汰机排除了部分矸石或精煤，减少了重介系统的负荷，使介耗及磨损减轻。降低生产成本。后所煤矿选煤厂利用７００ｍｍ重介质旋流器选跳汰粗精煤，取得了较好的效果。提高了精煤产率，稳定了精煤灰分，吨煤介耗不超过１ｋｇ／ｔ。     

一种实验室复合脉动路汰装置

介绍了复合脉动跳汰机在国内外的研究研究，阐述了实验室复合脉动跳汰装置的结构、工作原理以及跳汰装置参数的设置，结合试验情况，指出该装置可用于对跳汰分选过程的研究及指导实验跳汰机的操作。     

跳汰粗精煤再选工艺的应用

跳汰粗精煤、跳汰中煤再洗工艺可以弥补跳汰机对难选煤分选精度低、产品损失、污染等不足。同时由于跳汰机排除了部分矸石或精煤，减少了重介系统的负荷，使介耗及磨损减轻。降低生产成本。后所煤矿选煤厂利用Φ７００ｍｍ重介质旋流器选跳汰粗精煤，取得了较好的效果。提高了精煤产率，稳定了精煤灰分，吨煤介耗不超过１ｋｇ／ｔ。     

论准重介跳汰分选及相关问题：对跳汰机构及其操作方法实行根本改造

本文论述了跳汰选煤就是准重介绍浮务分选，不用重介分选却胜似重介分选，用水介分却可任意调节δｐ，而δｐ又远高于水介的δｃ，而重介选的δｐ基本上都是等于δｃ或极接近。由于都是根据浮力分选，所以，跳汰选就是准重介跳汰分选。文中还详细论述了将现有跳汰机完善为准重介分选机构的措施及其技术管理和操作方法。     

程序控制复振周期跳汰的研究

针对目前无活塞式跳汰机采用四阶段工作制度的单脉动周期跳汰后,分选效果不够理想的现状,分析了脉动水流特性对跳汰分层的影响,提出了用复振周期跳汰来提高洗选效率,研究了用编程的方法来实现复振周期而不需改造跳汰机机械结构,开发了复振周期跳汰控制仪和跳汰过程参数测试系统.工业性试验表明,程序控制的复振周期跳汰能明显地降低精煤透筛损失,改善一、二段的分选效果,减少洗水用量和提高跳汰机的处理能力.     

一种实验室复合脉动跳汰装置

介绍了复合脉动跳汰机在国内外的研究现状 ,阐述了实验室复合脉动跳汰装置的结构、工作原理以及跳汰装置参数的设置 ,结合试验情况 ,指出该装置可用于对跳汰分选过程的研究及指导实际跳汰机的操作     

强化水力跳汰过程的方向

介绍物料在跳汰机中进行分选的机理,并应用热力学、流体力学的理论加以分析,提出了跳汰过程动力学微分方程式及强化跳汰过程的方向。     

跳汰分选过程控制的现状及发展

介绍了跳汰分选的现状及跳汰分选过程的自动控制现状。认为目前对跳汰分选的控制仅限于自动排矸及对风阀的控制，采用常规的控制策略很难实现对跳汰机单机的自动化控制。针对跳汰分选过程复杂的作用机理，提出采用模糊控制技术进行跳汰分选的控制是可行的。     

用脉动床高效率分选受污染的土壤、筛砂和采矿废石

净化受污染的物料通常用物理选矿方法完成，例如通过物料粒度（分级）、密度（密度分选）或质量（分级／分选）的不同完成。一般而言，水力旋流器和上升水流分级已被用于此种目的。作为受荷兰政府补贴、并集中于环境技术开发的研究计划（T－2000研究计划）的一部分，试验了源于跳汰技术的一种新方法。该研究计划的第一阶段，将脉动床分选与已作为对比方法的水力旋流器作了比较。试验结果表明，在较低的总费用下，脉动床分选改善了净化效率。该研究计划的第二阶段，对5种受污染的物料（两种采矿废石料、两种土壤和一种筛砂）用脉动床进行了进一步试验。选别之后，4种物料的粗粒级已被证实在经一段加工后按荷兰法规就可以再应用。这些试验证实，脉动脉选矿可以成功用于受污染土壤的净化中。     

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.