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球磨机是岩金矿山选矿厂的重要设备,同时也是能耗大户。以三山岛金矿8 000 t/d新立选矿厂MQY5.5 m×8.5 m大型球磨机为工程实例,简要介绍了球磨机磨矿效能的影响因数,着重分析研究了大型球磨机磨矿效能影响因素优化节能、大型球磨机设计及参数优化节能、磨矿自动化及磨矿系统最大临界负荷节能。综合节能研究及生产应用取得了磨矿能耗降低17.24%的显著效果。 相似文献
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本文是针对MQY4060系列球磨机(Φ4000 mm×6000 mm)的设计计算。通过各项计算,确定了筒体转速、磨机装球量,作用于主轴承基础的垂直力和水平力。同时对端盖与筒体联接螺栓进行了计算,以确保各主要零部件的设计造型满足用户需求。 相似文献
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YTD型装置是一种适用于大型湿式球磨机起动的机械-液压-电气补偿装置。该装置具有结构简单合理、功能完备、操作简便和使用安全可靠等优点。并对该装置的若干设计思路进行了介绍 相似文献
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本文以大型回转设备球磨机筒体加工为例,将原筒体外圆、端面、法兰轮带等卷制、吊装运输中用于定位和防治筒体变形使用的不同结构、规格的组合固定死支撑装置,通过结构设计改进及优化,设计成满足不同规格结构、规格筒体加工定位、防变形需要的可拆卸组合活支撑,应用在筒体加工过程,使用效果良好。 相似文献
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液压开铁口机是高炉炼铁关键设备之一,其性能直接影响高炉的正常运行。目前,国内大型高炉使用的液压开铁口机均由国外进口,虽性能较优越,但价格昂贵,维修配件难以采购,给现场维护工作带来了不便,也增加了高炉炼铁维修成本。针对上述问题,对进口液压开铁口机从原理、设计理论等方面进行分析论证,对关键零部件的尺寸设计进行优化,同时,通过对关键零部件的材质和热处理工艺进行对比,对液压开铁口机的支座、回转机构、吊挂机构、钻架机构及液压系统进行改造,有效提升了液压开铁口机综合使用性能,实现液压开铁口机整机国产化,解决了国内钢铁工业领域大型高炉液压开铁口机关键技术瓶颈。 相似文献
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文章对选矿厂球磨机设备典型设计缺陷造成的故障进行分析,并将设备缺陷分类总结,提出了改进设备缺陷的方法,已在生产实践中应用,并取得了较好效果. 相似文献
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倪志安 《Canadian Metallurgical Quarterly》2011,23(3)
马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础. 相似文献
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D. N. Reznikov 《Metallurgist》1962,6(12):535-537
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The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease. 相似文献
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为了保障矿山企业的发展与矿山地质自然环境形成协调的发展模式,应对矿山深层水位的沉降进行检测,水工环地质调查是确定矿山地下水位深度的有效手段之一。基于此,开展对矿山地质构造沉降监测中水工环地质调查的作用分析研究,通过研究得出,水工环地质调查可以提高矿山地质构造沉降监测结果精准度、为矿山地质构造沉降提供应急方案、保障矿山地质构造沉降监测工作效率等作用,对实现矿山企业的精细化施工提供有利条件。 相似文献
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加强烧结过程控制与稳定烧结矿质量 总被引:1,自引:0,他引:1
烧结矿的金属性能包括机械强度、氧化还原性和强度稳定性项指标,而影响这些因素种类繁多、错中复杂。介绍了烧结厂通过加强对烧结全过程的控制,稳定烧结矿金属质量的方法和效果。 相似文献
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Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions. 相似文献