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对传统的护炉手段在炉役后期炉缸维护上的作用和弊端进行了分析,提出通过上下部制度优化实现对炉缸的维护,应该作为一个长期有效的护炉手段,以达到高炉长寿目的。 相似文献
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大冶诺兰达炉炉结形成及处理的探讨 总被引:1,自引:0,他引:1
通过对诺兰达炉炉结的洗炉,停炉后的测量,结合取样分析,生产中的观察,讨论了炉结形成的原因,洗炉的效果,得出了今后诺兰达炉生产中控制炉结的生产成以及洗炉时注意的问题。 相似文献
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通过对诺兰达炉炉结的洗炉,停炉后的测量,结合取样分析、生产中的观察,讨论了炉结形成的原因、洗炉的效果,得出了今后诺兰达炉生产中控制炉结的生成以及洗炉时应该注意的问题。 相似文献
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结合某厂25m环形炉工程对环形炉设计做了简要的介绍,对环形炉炉底机械结构特点进行了阐述,并对主要构件给出了设计计算方法。 相似文献
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间歇式炉炉墙传热的数学模拟 总被引:5,自引:0,他引:5
本文利用有限差分法和平均温度法计算了间隙式炉炉墙的温度分布,蓄热量及表面散热量。用上述两种方法对一层、二层、三层炉墙进行的计算表明:按平均温度法计算的蓄热量,由于没有考虑到炉墙内温度分布的非线性,比有限差分法计算的蓄热量要低;炉墙层数越多,两种方法计算的结果越接近;多层炉墙的各层有一个最佳厚度比例,使热损失(包括蓄热量和表面散热量)最小。 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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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
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