可调底流口旋流器在某尾矿筑坝中的应用

某尾矿筑坝时,随着坝体高度增加需要更换筑坝旋流器底流口,以维持筑坝需要的底流浓度和粒度,为此研发可调底流口旋流器。实践表明,使用可调底流口旋流器进行筑坝作业,省去了为每台旋流器配备多种规格的底流口,减少了设备成本,同时在使用过程中,不需要为旋流器更换沉砂口,减少人工成本。可调底流口旋流器分级效果不低于传统旋流器,适用于某尾矿筑坝作业。     

某矿山尾矿库筑坝工艺优化实践

受尾矿粒度较细、粘粒含量较多的影响,某矿山尾矿库沉积滩坡度小、渗透性差,不能满足安全生产要求。为此,该矿山先后进行了添加絮凝剂筑坝、旋流器筑坝、旋流器加池填法筑坝试验研究,最终采用旋流器加池填法筑坝,沉积滩坡度、渗透系数指标良好,坝体稳定性满足安全生产要求,尾矿回水水质满足选矿厂回用要求,缩短了筑坝时间,降低了筑坝费用。     

水力旋流器沉沙堆筑尾矿坝工艺的成果转让

水力旋流器是选矿领域矿物粒度分级的设备。将该设备的结构参数重新设计组合应用在尾矿库筑坝工艺是国内选矿领域的新技术。将旋流器安装在移动式台车上 ,砂浆在压力作用下在旋流器筒腔内旋转 ,比重大、粒度粗的物料由下部沉沙嘴排出泻至尾矿坝顶 ,比重小、细粒级物料由溢流部排出废弃进入尾矿库内。周而复始 ,渐渐推进直至将坝体筑完。旋流器沉沙筑坝可以大量节省尾矿坝堆筑费用 ,杜绝常规筑坝方法污染环境的问题。水力旋流器沉沙筑坝具有水力冲填性能 ,对防止坝体沉陷、变形、安全稳定有重要作用。筑坝沉沙浓度大于 70 % ;一组设备产沙 1 …     

旋流器筑坝在北洺河铁矿尾矿库的实践

从工艺选型、施工组织和实施效果等方面阐述了北洺河铁矿进行尾矿库旋流器法筑坝实践。实践表明,对于坝轴较短、上升速度较快的山谷型尾矿库适宜采用旋流器筑坝方式。     

水力旋流器沉砂筑坝的试验研究

介绍了水力旋流器沉砂筑坝新工艺的工业试验和旋流器参数的选择。     

水力旋流器底流筑子坝在上游式尾矿坝的应用

水力旋流器主要应用于中线式和下游式尾矿坝,在上游式筑坝中应用不多。本文根据其分级特性,以国内某尾矿库为例,研究旋流器底流筑子坝在上游式尾矿坝中的应用,提出"旋流器底流筑子坝、旋流器溢流和其余未接旋流器的尾矿支管沿沉积滩前均匀分散放矿"的上游式尾矿坝筑坝新方法。本文研究成果可为水力旋流器在选矿厂相关领域的应用提供参考。     

尾矿库坝外坡池填扩容法的效果分析

介绍了水厂铁矿的尾矿浆输送,由于尾矿排放不符合筑坝工艺要求,直接损失尾矿库库容,采用旋流器外坡扩容筑坝,堵管道事故频繁发生,改用外坡池填法筑坝后效果显著.     

应用水力旋流器进行细粒尾矿筑坝的工艺研究

针对尖山尾矿坝筑坝过程中存在的难题，通过工艺设计选型，成功地将水力旋流器筑坝工艺应用在细粒尾矿筑坝中，并与分散放矿相结合，取得了良好的效果。     

水力旋流器在矿山尾矿处理中的应用

介绍了水力旋流器在尾矿筑坝、尾矿预浓缩、尾矿富集回收、尾矿充填作业中的应用。水力旋流器结构简单、可行、高效，值得在矿山推广。     

分散管与旋流器交替排放联合筑坝新技术

本文介绍了分散管与旋流器交替排放联合筑坝新技术的特点，筑坝技术参数和使用条件。生产实践表明，它是解决山谷型尾矿库坝轴短、上升速度快，中高浓度、中偏细尾矿粒径堆筑后期子坝的最佳筑坝技术。     

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     

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     

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.     

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.     

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