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硅热法炼镁的节能和清洁能源解决方案 总被引:6,自引:2,他引:4
针对硅热法炼镁能耗高和燃煤污染的最新研究结果,提出了一套经实践检验、便于推广的产业化方案。热化学分析和试验证明,镁还原工序中温度能否达标对保证反应速度和提高产率尤为重要,为此设计的燃气还原炉是一种环保、节能、高效炉型。回收放空的焦炉煤气作为燃气还原炉燃料,并使炼镁、焦化、硅铁冶炼形成产业链联产互补的创新方案,有望加速皮江法炼镁工艺和装备的技术进步,实现节能和清洁化生产。 相似文献
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宿忠旺 《有色金属(冶炼部分)》1996,(6):46-47
硅热法炼镁厂真空系统过滤器设计近年来,在较高投资回报率的推动下,硅热法炼镁在国内得到迅速发展。但有一些设备和装置还有待于不断探索和改进。1硅热法炼镁工艺条件硅热法炼镁工艺过程是:将煅烧白云石、75#硅铁和合格萤石按比例磨细、混匀后压制成球,装入密闭反... 相似文献
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高炉喷吹还原气操作的数学模拟研究 总被引:3,自引:0,他引:3
副产煤气的高效利用对钢铁产业的节能降耗和环境保护意义重大。为此,提出了一个新的高炉风口喷吹高炉、转炉和焦炉煤气技术,并利用多流体高炉模型对其进行了详细模拟研究,预测了炉内现象和操作性能的变化。在维持回旋区温度、炉腹煤气量及渣面处铁水温度一致的条件下,模拟结果表明与现行常规操作相比,风口喷吹煤气后炉身温度下降,但整个炉内H2/CO浓度显著提高,炉身烧结矿间接还原加速,产量明显增加,热利用效率明显改善。其中喷吹焦炉煤气效果最为显著,高炉CO2产生量大幅度降低。随工艺氧制备等技术的进步,高炉喷吹副产煤气技术具有广阔的应用前景。 相似文献
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较详细地介绍了燃气井式热处理炉的节能技术改造。实践表明:技改有效地提高了燃气井式热处理炉的热效率,提高了炉子的产量,达到了节能与减少环境污染的目的。 相似文献
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O. N. Soskovets L. N. Shevelev V. A. Shatlov V. I. Eremin B. A. Marsuverskii S. A. Roginko 《Steel in Translation》2014,44(5):394-398
Groundbreaking energy-saving blast-furnace technologies are needed to reduce the energy costs in the production of hot metal and converter steel. The reduction in coke consumption and increase in productivity when hot reducing gases are injected into the blast furnace are assessed on the basis of calculations and industrial trials. The composition of the reducing gases is described before and after compression of the blast-furnace gases. Systems for recycling the blast-furnace gas and removing the CO2 are considered. The economic and energy benefits obtained by the injection of hot reducing gases are appraised. The energy efficiency of hot-metal production is increased by 40%. 相似文献
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以生产高炉为基础,通过Rist操作线模型计算了"理想"高炉的还原剂消耗。针对"理想"高炉的计算和我国目前高炉碳排放潜能的分析,提出了在我国现有条件下,降低高炉燃料比是减排高炉碳排放的主要措施,然而考虑到整个钢铁厂的能量平衡,应该选择最佳的方法减少CO2排放量。氧气高炉、炉顶煤气循环、高炉喷吹废旧塑料以及使用预还原炉料都... 相似文献
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Improving the efficiency of the heating of the steelmaking bath through the use of oxygen while reducing pollution remains
one of the most difficult but important problems in the science and practice of metallurgy. Of the different high-productivity
steelmaking methods now used, the oxygen-converter method is the leading technology: the unit consumption of oxygen averages
65 m3/ton in oxygen-converter steelmaking, 30 m3/ton in electric steelmaking, 60 m3/ton in open-hearth practice, and 70 m3/ton in two-bath furnace steelmaking. Most of the oxygen is consumed in refining processes.
The use of oxygen to improve thermal efficiency is limited. Oxygen-based steelmaking methods are characterized by low thermal
efficiency, oxidation loss of metal in the charge, wear of refractories, and emissions of dust and products of incomplete
combustion. An increase in the concentration of oxygen in the furnace chamber increases the rate of oxidative processes (combustion
of carbon, iron, and other components of the melt) but reduces fuel consumption and increases the consumption of pig iron
(heat-carrier prepared in the blast furnace). Attempts to use combustion air with an oxygen content higher than 25–30% in
open-hearth steelmaking have shortened the life of the roof refractories and increased downtime for repairs.
“TsNIIchermet” State Science Center. Translated from Metallurg, No. 9, pp. 25–28, September, 1996. 相似文献
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对首钢1号高炉焦炭质量恶化后增产节焦的生产经验进行了总结分析。认为提高入炉原燃料质量,综合优化高炉基本制度,合理控制稳定的操作炉型是保证炉况长期顺稳、实现效益最大化的有效手段。 相似文献