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介绍了安钢烧结厂配加石灰石粉部分替代生石灰的实验室试验和工业生产情况。试验和生产结果表明,在安钢原料及工艺条件下,烧结生产中配加5%左右的石灰石粉替代生石灰,对烧结矿产质量及能耗指标无负面影响,而且可缓解生石灰采购压力,降低熔剂成本。 相似文献
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介绍了安阳钢铁公司烧结厂配用钢渣的烧结生产实践。通过对配用钢渣后烧结矿理化指标标准偏差的对比分析,查明配用钢渣后烧结矿转鼓强度有降低的趋势,w(TTe)升高,w(SiO2)降低,同时各指标波动幅度减小。经过经济效益估算,配用钢渣可降低安钢的烧结矿成本。 相似文献
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酒泉钢铁公司为提高烧结机产量,增加烧结矿入炉比例,降低生铁成本,在3#烧结机上进行了生石灰分加试验。结果表明,采用生石灰分加技术,有助于改善制粒和料层透气性,提高烧结矿产量和质量。 相似文献
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本文介绍了安钢烧结厂1996年10月份以来采取的改善烧结矿质量的措施。实践证明,这些措施对提高烧结矿品位,改善烧结矿品位、碱度稳定性是有效的。 相似文献
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针对当前国家制定的低碳方针及炼铁成本偏高、钢铁企业追求低成本炼铁的目标,采用Rist操作线法及C-rd两种方法分析了高炉炼铁过程中的碳消耗。对高炉炼铁成本进行系统分析得出:两种方法计算出的高炉炼铁碳消耗结果基本相同,误差范围在1%~2%;在ηCO55%~58%热消耗接近9 GJ/t的情况下,单位生铁的碳消耗是高炉炼铁的低碳目标,目前中国高炉的燃料比要比低碳炼铁的燃料比高出80 kg/t以上;原燃料价格低并不等于生铁成本低,应根据焦炭、煤粉、熔剂、矿石及烧结矿的综合成本来科学计算评估炼铁生产成本。由于当前产能过剩,高炉工作者应从追求产能转变为保证炉况顺行、稳定炉腹煤气量、实现低碳低成本炼铁。 相似文献
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精料炼铁和经济料炼铁是两条截然不同的技术路线。本文选取3家钢企近期生铁成本数据,对精料炼铁和经济料炼铁利弊进行分析,试图为微利时代新钢炼铁炉料结构调整和优化提供有价值的建议和思路。 相似文献
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In order to maximise the reduction of pig iron cost in an ironmaking process, and at the same time ensure the output and quality of the pig iron, a design and optimisation system for the charging ingredients and structure in an ironmaking system was established using metallurgical theory. The system includes six modules, namely, sinter metallurgical performance testing and analysis, sintering burdening design, sinter component and property prediction, blast furnace burdening design, blast furnace batching calculation and ironmaking system burden optimisation. Based on actual production, testing and material balance theory, the system integrated these modules on VB and MATLAB using a series of intelligent algorithms, such as the BP neural network, multiple objective linear programming, genetic algorithms and so on. As a result, the optimum burden composition and structure of the sinter and blast furnace that satisfied all the constraint conditions could be obtained. Standing as a pinnacle of the global ironmaking production, the system can design and optimise not only the sintering burden, but also the blast furnace burden. Compared with the traditional production testing and hand calculation in the ironmaking system, the project can greatly reduce the production risk and greatly increase the calculation accuracy. Industrial application shows that the system is especially beneficial to reduce the ironmaking cost and at the same time ensure the output and quality. 相似文献
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