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莱钢750m^3高炉强化冶炼的主要措施是精料、采用合理的操作制度和应用新技术。鉴于过高冶炼强度影响高炉寿命,今后应稳定冶炼强度,大力降低燃料消耗,进一步抓好精料。 相似文献
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“精料”是炼铁技术发展的基础,我国炼铁精料技术的进步体现之一高炉炉料结构中的酸性球团矿比例得以提高,带动了人炉含铁原料品位的增加,使得高炉炼铁产、质量和经济指标明显改善。 相似文献
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提高球团焙烧炉使用寿命的设计研究张克铭,王珍(鞍钢设计研究院)1前言鞍钢11号高炉系统工程的投产,标志着鞍钢炼铁系统生产技术达到了国内先进水平。11号高炉的生产是建立在大型高炉使用精料的基础上,这种精料就是30%的酸性球团矿。球团车间是炼铁生产的原料... 相似文献
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本文介绍了首钢高炉生产现状,分析了高炉炼铁技术的发展前景,提出了高炉炼铁技术结构优化的重点,即大力发展高炉喷煤技术,提高精料水平和风温,延长高炉寿命,降低工序能耗。通过技术改造提高高炉整体水平,全面实现高炉炼铁技术的结构优化。 相似文献
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精料工作是提高高炉生产能力、降低焦比的具有决定性的先决条件。在当今高炉使用较高熟料率的情况下,影响精料工作水平提高的一个主要问题是,如何保证高炉所用 相似文献
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本文简述了山东省高炉炼铁现状及发展,分析了山东省炼铁系统存在的差距,提出了山东省炼铁发展方向和技术进步工作重点是抓好精料,提高高炉风温,高炉喷煤量以及高炉管理和操作水平。 相似文献
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1号高炉后期炉在炉身采用水冷模块及推行精料的有利条件下,以提高风温利用为突破口,通过改进高炉操作技术,高炉使用风温提高至1100℃水平,高炉的强化和优化取得了显著的效果。 相似文献
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介绍了随着涟钢烧结机、高炉不断大型化,铁前产量大幅提高后,涟钢高炉和烧结配矿的发展历程和生产实践,提出提高高炉入炉品位应作为长期的追求目标,阐述了配矿优化方向。认为淘汰品质不稳定、品种复杂的炉料结构方式,配加高品位优质块矿是较适宜的高炉炉料结构。随着高炉炉料结构的优化和精料方针的实施,铁前综合效益得到提高,各项经济技术指标得到改善。 相似文献
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高炉炼铁技术的发展和进步,不仅仅依赖于装备和操作水平的提高,“精料技术”是高炉炼铁发展的基础。本文针对近几年来国内外铁矿粉造块的烧结、球团理论和工艺技术进步及发展进行了系统的总结分析。针对铁矿粉造块工艺所面临的资源、节能减排形势,提出了以科技进步为基础、创新求发展,促进我国铁矿粉造块技术的进步,为高炉炼铁“优质、高产、低耗、环保” 奠定良好的“精料水平”基础技术路线。 相似文献
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A formula relating the main technological parameters to blast-furnace productivity is derived. The formula takes account of
the characteristics of modern blast-furnace shops. Calculations based on this formula agree with experimental data. The influence
of coal-dust fuel on furnace productivity and blast-furnace performance is considered. The existing automation systems in
blast-furnace shops have evident flaws and require replacement. 相似文献
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介绍了高炉煤气、天然气混合煤气的特性,详细阐述了双燃料烧嘴的技术特点以及燃烧系统改造方案.技术改造取得了充分利用高炉煤气、减少使用天然气的成本,保证生产操作的灵活性的良好效果. 相似文献
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本文着重对常规高、焦炉混合煤气在应用过程中存在的问题和产生原因进行了分析。并对作者开发的高炉煤气和焦炉煤气直接进烧嘴混合燃烧的新技术进行了详细的介绍和论证。 相似文献
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The production of ferrous metals and the extraction and processing of raw materials are environmentally hazardous. Besides atmospheric and water pollution, many solid wastes are formed. Chlorine plays a special role in blast-furnace processes. The chlorine compounds present in the blast-furnace gas lead to the corrosion of pipelines, air heaters, and tuyeres in the furnace. The behavior of chlorine in the blast furnace determines the sinter properties during the reduction process. If the content of mineral chlorine (chlorine bound with metals) in residues at filters and dust traps is monitored, the toxicity of the wastes may be assessed, and the production processes may be evaluated. The chlorine content is determined by various physical methods: atomic-emission spectrometry, mass spectrometry with inductively bound plasma, and neutron-activated analysis. However, chemical methods have been widely adopted: titrimetric, photometric, electrochemical, and ion-chromatographic methods. It is important to develop fast and inexpensive methods of determining chlorine for the analysis of materials encountered in technological systems, including metallurgical systems. In the present work, attention focuses on samples of blast-furnace slag from PAO Tulachermet and dusty wastes from PAO Kosogorskii Metallurgicheskii Zavod. X-ray fluorescent methods are used for preliminary analysis of the sample composition. The interfering influence of other components is considered. Ionometric determination of chlorine by means of a crystalline chloride-selective electrode is proposed. The samples are decomposed by high-temperature sintering in a mixture with Na2CO3 and ZnO and subsequent leaching with water. The details of this method are described. The results of the analysis are confirmed by variation in the sample weight (n = 10; t tab = 2.26, P = 0.95) and also by comparison with X-ray fluorescent data. The precision of ionometric determination of chlorine in the blast-furnace system is assessed. The working range of the chlorine concentrations observed is 0.037–1.340 wt %. 相似文献