共查询到20条相似文献,搜索用时 109 毫秒
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利用两个煤粉仓料面高度之差,结合煤粉的半流体特性,通过对煤粉的输送研究,研制出煤粉常压输送装置,实现了煤粉从高料位煤粉仓向低料位煤粉仓的输送。 相似文献
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对武钢高炉长距离输送煤粉设计进行了总结.充分利用现有设施,实现了长距离高压浓相输送煤粉,输送最长距离1760m,喷吹罐最高输送压力达1.1 MPa,输送浓度25~ 35 kg,/kg,满足了不同输送距离和输送能力的要求. 相似文献
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阐述了高浓度粉煤送输技术在锅炉中的应用,体现出高浓度煤粉输送技术所具有的输粉系统优化、强化炉体稳定燃烧及NOx(氮氧化物)排放浓度降低等特性。 相似文献
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选用石油焦替代部分高炉喷吹用煤,并通过对其着火点、反应性、燃烧性能、可磨性及输送性能的系统研究发现,高炉喷吹石油焦可改善煤粉的燃烧性能、降低能耗。综合考虑输送性能及高炉所能承受的硫负荷,高炉喷吹石油焦的配比不宜过高。 相似文献
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炼钢厂生产管理信息系统包括制造命令管理子系统、生产辅助管理子系统和工艺质量管理子系统.本文从软件工程理论出发,围绕数据库应用系统的开发,结合制造命令管理子系统的具体实现,主要介绍了生产管理系统在Oracle Developer中的设计思想及开发方法. 相似文献
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铸轧带坯晶粒粗大的原因分析及对策 总被引:1,自引:0,他引:1
金属结晶时晶粒的大小取决于体积形核率和晶体表面长大线速度的相对大小,形核率与长大线速度的大小主要取决于液相的过冷度。根据影响晶粒度大小的因素分析铸轧带坯产生粗大晶粒的主要原因,提出了控制和细化铸轧带坯晶粒度的对策。 相似文献
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从带钢头尾宽度的工艺原理出发,从工艺、现场、设备特点及控制原理等方面对短行程控制(SSC)进行了分析,并针对太钢产品的实际特点,研究出不同种类的控制曲线,取得了明显效果。 相似文献
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对存在于硫酸锌溶液中的丹宁酸有机物对锌电解电流效率的影响进行了试验研究,结合生产实际对建矿以来工业生产中有关锌电解电流效率的相关数据进行分析,认为存在于硫酸锌溶液中的丹宁酸有机物极易在氧化介质和高温环境中被破坏除去,不会对锌电解造成危害和降低锌电解电流效率。 相似文献
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Petzold Antje; Plessow Franziska; Goschke Thomas; Kirschbaum Clemens 《Canadian Metallurgical Quarterly》2010,124(2):248
In contrast to the well-established effects of stress on learning of declarative material, much less is known about stress effects on reward- or feedback-based learning. Differential effects on positive and negative feedback especially have received little attention. The objective of this study, thus, was to investigate effects of psychosocial stress on feedback-based learning with a particular focus on the use of negative and positive feedback during learning. Participants completed a probabilistic selection task in both a stress and a control condition. The task allowed quantification of how much participants relied on positive and negative feedback during learning. Although stress had no effect on general acquisition of the task, results indicate that participants used negative feedback significantly less during learning after stress compared with the control condition. An enhancing effect of stress on use of positive feedback failed to reach significance. These findings suggest that stress acts differentially on the use of positive and negative feedback during learning. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Closely Spaced Footings on Geogrid-Reinforced Sand 总被引:2,自引:0,他引:2
The results discussed in this paper are based on a total of 74 tests performed on closely spaced strip and square footings on geogrid-reinforced sand. The study was carried out to evaluate the effect of spacing between the footings, size of reinforcement, and continuous and discontinuous reinforcement layers on bearing capacity and tilt of closely spaced footings. The interference effects on bearing capacity and settlement of closely spaced square footings on reinforced sand were almost insignificant in comparison to those on isolated footings on reinforced sand; whereas a significant improvement in the tilt of adjacent square footings has been observed by providing continuous reinforcement layers in the foundation soil under the closely spaced footings. A considerable improvement in bearing capacity, settlement, and tilt of adjacent strip footings has been observed by providing continuous reinforcement layers in the foundation soil under the closely spaced strip footings. 相似文献
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面对激烈竞争的市场,阐述了企业图生存发展必须发挥自身优势,走科技创新之路,不断进行技术改造与更新,实施产品的规模化、系统化和配套化生产,运用正确的经营战略开拓市场,靠质量和品种占领市场,靠技术进步扩大市场,靠严格的管理赢得市场,靠售后服务巩固市场,从而使企业不断发展壮大,永远立于不败之地。 相似文献
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本文研究了NiBe合金的加工性能以及固溶热处理与时效处理的温度和时间对合金性能的影响,同时探讨了添加Ti,Mg等微量元素对合金性能和晶界反应过程的影响,添加Mg能明显抑制合金的晶界反应,提高合金的工艺性能和机械性能。 相似文献