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分析了轧钢连续加热炉在钢铁企业中的能耗现状,提出了降低轧钢加热炉能耗的一系列措施,包括改造加热炉结构、优化工艺、改进维护手段等。 相似文献
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分析了轧钢连续加热炉在钢铁企业中能耗现状,提出降低轧钢加热炉能耗的一系列措施,包括改造加热炉结构、优化工艺、改进维护手段等。 相似文献
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邓舜英 《金属材料与冶金工程》1986,(4)
二、轧钢过程的节能技术轧钢生产的能耗占钢铁生产总能耗的20%,而其中60%用于加热炉,因此改进加热炉设备和工艺操作,回收排放的热能及采用节能新技术等都可以收到大幅度降低轧钢能耗的效果。 l。改进加热炉的设备及工 相似文献
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我国目前轧钢加热炉和热处理炉的能耗约占轧钢生产能耗的70%左右,轧钢生产过程中,电力消耗占25~30%,其它动力消耗占1~5%。1978年以来,国内各轧钢企业对加热炉的节能很重视。积极地贯彻冶金部《关于轧钢加热炉节约燃料的若干规定》,促进了我国轧钢加热炉节能工作的开展,获得了显著的节能效益。1979~1981年累计节约标煤171万吨,其中节约燃油约 相似文献
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简谈轧钢加热炉问题及节能 总被引:3,自引:0,他引:3
通过对首钢各厂轧钢加热炉现状调查、热平衡测试和指标监测,分析出了目前轧钢加热炉使用与运行过程存在的问题.针对这些问题,提出轧钢加热炉节能改进的对策,通过实施这些对策,可以进一步降低轧钢加热炉能耗并延长其寿命. 相似文献
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前言冶金工业是全国的能耗大户,据冶金部能源办公室公布的资料表明,我国冶金工业1979年的能耗达8400万吨标煤,占全国总能耗的14%。在钢铁企业中,轧钢工序的能耗约占企业的能耗的15~20%,而在轧钢工序中,各轧钢加热炉所用的炉用燃料占了该工序能耗的70~80%。所以,抓好轧钢加热炉的节能工作十分重要。我省轧钢 相似文献
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节能是冶金工业的重点工作。冶金工业的能耗占全国总能耗的18%,轧钢工序用能与冶金工业总能耗的10~12%,而加热钢材所需能耗占轧钢总能耗的70%以上,可见轧钢加热炉是轧钢工序十的耗能重点。现在加热炉的热效率水平相差很大,高的已 相似文献
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融合线性、非线性模型的黄金价格预测模型研究 总被引:1,自引:0,他引:1
单一的线性模型或单一的非线性模型都难以全面反映黄金价格波动性的全部信息,根据单整自回归移动平均(ARIMA)模型和神经网络(NN)模型的各自特点,以上海黄金交易所黄金现货市场的交易品种Au99.99为研究对象,建立了ARIMA模型融合神经网络的黄金价格时间序列预测模型。实证结果表明,融合模型ARIMA-NN的预测准确性明显比单一模型的准确性高。 相似文献
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热轧张力观测器模型的研究与构建 总被引:2,自引:0,他引:2
张力观测器模型是微张力控制模型实现的基础,本文提供了一种精确的热轧机架间微张力预报的方法。采用新张力计算模型,结合轧制过程中轧制力臂变化,基于以弹性变形理论为基础的张力方程,设计出张力动态变化的计算方法,由此构建新的热轧微张力控制过程的张力观测器,在生产应用中取得了良好的效果。 相似文献
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Ruby Matthew B.; Dunn Elizabeth W.; Perrino Andrea; Gillis Randall; Viel Sasha 《Canadian Metallurgical Quarterly》2011,30(1):67
Objective: To examine whether—and why—people underestimate how much they enjoy exercise. Design: Across four studies, 279 adults predicted how much they would enjoy exercising, or reported their actual feelings after exercising. Main Outcome Measures: Main outcome measures were predicted and actual enjoyment ratings of exercise routines, as well as intention to exercise. Results: Participants significantly underestimated how much they would enjoy exercising; this affective forecasting bias emerged consistently for group and individual exercise, and moderate and challenging workouts spanning a wide range of forms, from yoga and Pilates to aerobic exercise and weight training (Studies 1 and 2). We argue that this bias stems largely from forecasting myopia, whereby people place disproportionate weight on the beginning of a workout, which is typically unpleasant. We demonstrate that forecasting myopia can be harnessed (Study 3) or overcome (Study 4), thereby increasing expected enjoyment of exercise. Finally, Study 4 provides evidence for a mediational model, in which improving people's expected enjoyment of exercise leads to increased intention to exercise. Conclusion: People underestimate how much they enjoy exercise because of a myopic focus on the unpleasant beginning of exercise, but this tendency can be harnessed or overcome, potentially increasing intention to exercise. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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ZHANG Jun-hong XIE An-guo SHEN Feng-man 《钢铁研究学报(英文版)》2007,14(2):1-5
A multi-objective optimization and analysis model of the sintering process based on BP neural network is presented. Genetic algorithms are combined to simplify the BP neural network, which can reduce the learning time and increase the forecasting accuracy of the network model. This model has been experimented in the sintering process, and the production cost, the energy consumption, the quality (revolving intensity), and the output are considered at the same time. Moreover, the relation between some factors and the multi-objectives has been analyzed, and the results are consistent with the process. Different objectives are emphasized at different practical periods, and this can provide a theoretical basis for the manager. 相似文献
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运用灰色理论进行精矿成本预测 总被引:1,自引:0,他引:1
运用灰色预测理论,建立了精矿成本预测模型,对某铁矿山的最终精矿成本进行了预测,经检验并和实际数据对比,结果令人满意,说明灰色预测模型在精矿成本预测中具有较好的实用价值。 相似文献
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A systematic study on the electrical load forecasting for large scale iron and steel companies was made. After analyzing the electrical load′s characteristics, an algorithm framework for the load forecasting in iron and steel complex was formulated based on model combination and scheme filtration. The algorithm features data quality self adaptation, convenient forecasting model extension, easy practical application, etc, and has been successfully applied in Baoshan Iron and Steel Co Ltd, Shanghai, China, resulting in great economic benefit. 相似文献