管磨机通风量影响因素分析

从管磨机粉磨相关行业入手,说明管磨机通风量与通风方式研究的工程应用价值。为实现管磨机粉磨系统优质高产低耗,分别阐明管磨机通风量与通风方式的影响因素,进而说明管磨机适宜的通风量对系统效益的重要作用。从管磨机粉磨工艺及其装备角度出发,提出保证管磨机通风效果的途径与方法,将对管磨机粉磨相关行业技术进步带来积极影响。     

提高管磨机工作效率的建议

围绕水泥成品的优质高产低消耗,说明了管磨机内物料与研磨体的充分接触是提高管磨机工作效率的必要条件。详细阐明了管磨机＂风洞＂形成过程与＂跑粗＂的形成原因,强调了管磨机粉磨系统处理能力平衡与粉磨系统性能稳定对提高管磨机工作效率的重要性,并依此对管磨机研磨体级配、衬板选择、隔仓板与出磨篦板结构改进等方面提出了有益的建议,必将对管磨机相关行业技术进步带来重要影响。     

管磨机料球筛析现象分析

以实现管磨机粉磨系统的优质高产低消耗为目标,在对多家水泥企业进行考察与实验的基础上,分析了管磨机中的料球筛析现象,讨论了管磨机料球筛析现象的形成原理和物料在前后仓的破碎研磨规律,探讨了管磨机出现"跑粗"现象的原因.在此基础上对管磨机研磨体级配、衬板形式、前仓最大球径、平均球径的确定等提出了建议,为优化管磨机工艺参数与结构参数提供参考.     

管磨机易损件选用原则研究

围绕提高水泥行业粉磨系统的经济效益问题,分别介绍了管磨机主要易损件衬板、研磨体、隔仓板与出磨篦板等的选用原则,进一步阐明了管磨机工作状态稳定对系统效益的重要作用。从设备角度提出保证管磨机工作状态稳定的途径与方法,将对管磨机相关行业的技术进步带来积极影响。     

管磨机最佳传动形式研究

当前水泥粉磨应用的管磨机主要采用边缘传动、中心传动两种传动形式。本文围绕管磨机粉磨系统优质、高产、低消耗,从理论与实践两个方面,分析管磨机的不同传动形式在投资、效益等方面的差别,进而说明了管磨机适宜传动形式对系统效益的重要作用,必将对管磨机粉磨相关行业技术进步带来积极影响。     

管磨机进料原则研究

提出了管磨机进料原则为“匀、干、细、稳、冷”。详细阐明了进料均匀不仅要落实到粒度上而且要落实到易磨性上,提出了解决生料磨进料综合水分偏高问题的措施与管磨机经济进料粒度的概念,说明了管磨机进料稳定性对系统效益的重要影响与解决水泥磨进料温度偏高的方法,必将对管磨机相关行业技术进步带来积极影响。     

中心传动管磨机主减速机膜片联轴器弹性膜片断裂的原因分析

管磨机是一种低速重载长期连续运转的粉磨机械,是水泥厂的关键设备之一。中心传动管磨机主减速机膜片联轴器弹性膜片,是管磨机系统的重要部件。随着水泥行业的发展和技术的进步,管磨机的规格越来越大,弹性膜片的制造和安装质量,以及日常维护情况,对管磨机的安全稳定运转影响极大。一般情况下,水泥厂都不准备弹性膜片的备件,弹性膜片断裂将会造成整个管磨机系统停产,其检修难度大、     

管磨机与球破机粉碎机理研究

本文由管磨机与球破机相关行业及其研究背景入手，说明课题的巨大研究价值。围绕水泥成品优质高产低消耗的目标，从管磨机与球破机料球截面筛析理论入手，揭示了管磨机与球破机的粉碎机理。由管磨机与球破机的机理比较引出了球破机与球磨机串联粉磨工艺理论，阐明了球破机作为新型破碎机械对水泥粉磨工艺的影响，必将对利用管磨机与球破机进行破碎粉磨的相关行业技术进步带来积极影响。     

低碳低合金钢衬板在氧化铝生产中管磨机上的应用

管磨机在粉磨物料时,磨机衬板磨蚀很快,衬板的消耗量也很大。本文针对高锰钢衬板的损坏原因进行了分析,指出了锰钢材料作为衬板的不适应性,并对低碳低合金钢在管磨机上的试验使用情况作了介绍。生产实验表明,低碳低合金钢衬板的使用寿命可以达到高锰钢衬板的2倍以上,在一定程度上,低碳低合金钢可以取代高锰钢作为磨机衬板的材料。     

管磨机筒体裂纹的原因分析与处理对策

管磨机是被广泛应用于冶金、采矿、化工、建材和水泥等行业的重要设备,筒体是其非常关键的部件。筒体承受着整个管磨机的运转动载荷,在交变应力作用下连续运行,它是质量要求比较高的部件,同时也是比较容易发生问题的部件。据了解,有许多厂家的管磨机发生过筒体裂纹故障。简体裂纹是管磨机非常严重的发备故障,必须立即停机检修,以免造成重大的设备事故。处理简体裂纹的技术要求高、检修周期长、劳动强度大、费工费时,处理不好还容易继续引发各类设备故障,妨碍管磨机安全运行,严重影响生产。我厂的φ2.4×12 m管磨机也发生过筒体裂纹故障,经过认真细致     

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     

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     

2014 second batch of rare earth quota released

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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