袋装生活垃圾破碎机辊筒的设计

城市生活垃圾袋装化已成为我国城市生活垃圾主要的收集方式。在垃圾预处理过程中需要破碎机。本文讨论了根据选择性破碎的原理，运用连杆机构，设计破袋破碎机的辊筒。当袋装生活垃圾由进料口进入破袋破碎机内，经过选择性破碎后，破碎刀片收缩至防缠罩内，同时防缠罩上的刷子将粘缠在破碎刀片上的垃圾去除，以清理缠绕物和实现自我保护功能。     

剪切式单辊生活垃圾破碎机的分析与设计

针对近年来新提出的生活垃圾资源化处理,制成垃圾衍生燃料(RDF),垃圾破碎是其中的一个重要环节。提出采用剪切式单辊破碎机破碎生活垃圾,首先分析了该破碎机的工作原理,并根据生活垃圾的特点,介绍了其基本结构和破碎过程,最后分析了刀粒的受力情况,并根据破碎粒度要求设计了固定颚板新型结构,具有实际应用价值。     

城市生活垃圾破碎机的控制系统设计

介绍了一种用于城市生活垃圾破碎机的自动控制方法。该自动控制方法采用PLC+触摸屏+工控机,并采用通信的方式实现相互之间的数据交换,可对破碎机刀片转速进行精确控制,实现运行过程中垃圾破碎受力的自动调整,提高了破碎机的自动化程度,使得垃圾破碎机以最佳状态运行。     

剪切式破碎机在生活垃圾预处理中的试验研究

笔者设计的剪切式破碎机——粗碎破袋机和中碎破碎机于2003年9月～12月，曾对上海市虹口区生活垃圾进行破碎试验，累计破碎生活垃圾240t。本次试验是依据上海市环     

悬辊磨在城市生活垃圾处理中的应用与改进

以 城市生活垃圾精堆肥为原料制造菌肥或有机复混肥 ,是城市生活垃圾综合处理主要方法之一。但作为菌肥或有机复混肥原料的城市生活垃圾精堆肥 ,要求破碎到一定的粒度 ,才能作为有机原料添加。由于城市生活垃圾精堆肥成分复杂 ,大量的柔性物质、脆性物质混杂在一起 ,给破碎带来一定的难度。将垃圾精堆肥破碎到有效的粒度 ,是工程技术人员研究城市生活垃圾综合处理的课题之一。我公司在四川西昌城市生活垃圾综合处理工程实践中 ,进行了多次实验及分析研究 ,认为破碎设备以悬辊磨作为精堆肥破碎的效果较好 ,但需进一步改进。1工作原理(1)悬辊…     

基于PLC技术的破碎机自动控制系统设计研究

煤矿破碎机应用装在飞轮上刀齿冲击破碎大块煤,将煤破碎并磨成煤粉的破碎设备。为了提高破碎机控制系统的可靠性及安全性,特设计一种基于PLC技术的破碎机自动控制系统。首先阐述PLC技术的结构及优势;分析破碎机控制系统的设计要求;探讨PLC技术在破碎机自动控制系统中的应用。     

国内分级破碎机的研究现状及方向

从破碎基础理论的研究、结构形式、破碎齿形设计、破碎齿的布置方式、耐磨技术等方面对国内分级破碎机的研究现状进行了分析,并提出了国内分级破碎机以后的研究方向。     

新型非圆柱式对辊破碎机的设计

根据破碎机的工作原理,在现有产品基础上采用虚拟样机技术对对辊破碎机进行创新设计,设计出一种非圆柱式对辊可移动式破碎机。该新型破碎机具有体积小、破碎比大、被破碎物料粒度均匀、噪声低及维修方便等优点,并可提供过载保护,降低了劳动强度,运行安全可靠,极大地提高了生产率。     

破碎机破碎腔形状的合理设计

<正> 破碎机破碎腔形状对物料的破碎过程起着决定性的作用,因此,正确地研究设计破碎机破碎腔形状有着很重要的意义。为了寻求一种合适的破碎腔形状,本文从保证破碎机破碎过程中的几项主要指标——生产能力、单位能量消耗、破碎产品质量和破碎板的磨损等——出发,综合分析研究了破碎机破碎腔形状设计中的几个问题,给出了啮角α和破碎板使用寿命等的计算公式,提出了进行破碎机破碎腔形状合理设计的建议。     

基于惯性振动破碎技术实现物料细碎的研究

多碎少磨、料层粉碎是当今破碎技术的主要发展方向。在此基础上引入惯性振动破碎技术,将其应用于破碎机的设计中,研发了GYP1500惯性圆锥破碎机。工业试验结果表明,该设备能有效降低破碎产品最终粒度,实现物料细碎,验证了惯性振动破碎技术在物料细碎的应用是成功的。     

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。