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活性石灰生产及在炼钢中的作用 总被引:6,自引:0,他引:6
对活性石灰特性及在炼钢中的作用进行了分析,阐述了活性石灰的煅烧机理,总结了国内外先进石灰窑型的生产特点及炼钢用石灰质量的提高途径,加深企业对“活性石灰”的认识,为冶金企业建设“活性石灰”生产线起到良好的借鉴和参考作用。 相似文献
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石灰是炼钢生产的主要辅助原料,石灰煅烧质量的好坏对炼钢工艺和产品质量有很大影响。如何采用新工艺、新技术来攻克石灰的煅烧技术,生产出符合特钢冶炼质量要求、质优价廉的石灰;本文结合我厂现有装备条件下,石灰生产现状,对石灰石的理化特性、煅烧性质、煅烧工艺技术、改善石灰质量和提高石灰产量等关键技术作了科学探讨。 相似文献
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本对煅烧活性石灰的原料、燃料中硫含量进行了分析,找到了影响活性石灰含硫量的主要原因,并提出相应的措施以提高活性石灰的质量。 相似文献
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炼钢用石灰的质量要求及生产优质石灰的技术条件 总被引:1,自引:0,他引:1
本文阐述炼钢用熔剂石灰的化学成分和物理性能对炼钢工艺的影响;唐钢所用石灰的质量现状及其对转炉炼钢技术经济指标的影响;生产优质活性石灰必须具备的技术条件(包括对原、燃料及煅烧窑炉的要求);指出传统式竖窑的热能消耗高,不能保证生产优质活性石灰,必须进行技术改造;对比了当今世界通用的新式竖窑和回转窑的特性和优缺点;介绍了我国目前引进推广这种窑炉技术和设备的进展情况及所得的成果;最后,提出了生产活性石灰和提高石灰质量应采取的措施。 相似文献
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介绍了天铁集团两代气烧石灰竖窑新技术的研制与开发,通过标准化操作和应用,使用低品位石灰石,煅烧出低S、优质活性冶金石灰。不断地满足了炼钢生产需求,石灰消耗大幅度下降,各项经济技术指标明显改善,取得了显著经济效益。 相似文献
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对影响炼钢用活性石灰分析结果的准确度的因素进行了分析。通过同组试样的结果分析、同一试样不同保存器具、不同保存时间进行的分析,查找出了影响活性石灰分析结果准确度的主要因素。 相似文献
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由于矿山系统生产工艺的制约,导致白灰窑使用的原料有时不够,通过扩大使用原料的粒度范围,找出最适合的原料粒度比,对两条生产线采用分级煅烧的实践,保证了白灰窑的产量和质量,收到较好的效果。 相似文献
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石灰石替代石灰炼钢造渣效果研究 总被引:1,自引:0,他引:1
文章通过生产实际试验数据,研究转炉炼钢用石灰石代替部分石灰造渣过程中石灰石的行为,论证了转炉用石灰石炼钢造渣的相对合理方案。结果表明,转炉炼钢前期预加石灰石做造渣原料,可以很快完成煅烧化渣过程,能够实现降低吨钢石灰消耗,达到降本增效的目的,用石灰石造渣能够达到预期目标,使转炉吨钢石灰消耗降低近10 kg/t。 相似文献
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《钢铁研究学报(英文版)》2016,(9):884-890
Burnt lime is an important material in steelmaking and its activity degree is a key factor for liquid steel quality.The burnt lime was made by the calcination of limestone in a high pressure electric furnace.The burnt lime mineralogical phases and micro-morphologies were characterized by X-ray diffraction(XRD)and field emission scanning electron microscopy(FE-SEM).The burnt lime activity degree was determined by acid-base titration,the burnt lime pore distribution was measured by mercury intrusion porosimetry(MIP),and the thermal effect of a mixture of burnt lime and slag was measured by differential scanning calorimetry(DSC).The results showed that the CaO grain size and pore size of burnt lime made under high pressure were larger than those of burnt lime made under atmospheric pressure.The CaO grain size and pore size increased and the laminate phenomenon also occurred clearly under high pressure.The activity degree of burnt lime made under high pressure was greater than that made under atmospheric pressure.The maximum activity degree was 437 mL for burnt lime made under a pressure of 0.4 MPa.For the same ratio of CaO to SiO_2,the melting temperature,hemisphere temperature and fluidity temperature of slag decreased with increasing burnt lime activity degree.The higher the activity degree the burnt lime had,the better the slag forming occurred.It was advantageous for 2CaO·SiO_2and 3CaO·SiO_2 forming at lower temperatures if the burnt lime activity degree was increased. 相似文献
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The hydrides in industrial lime,alumina,magnesia,and calcium fluoride were investigated through differential thermal analysis and X-ray diffraction,and their mass losses during heating up were studied by thermogravimetric analysis method.The results indicate that the industrial alumina,lime,and magnesia,which have more moisture or hydride and mainly include γ-Al2O3,Ca(OH)2,and Mg(OH)2,lose more mass during thermogravimetric analysis process.However,the mass of premelted slag consisting of lime,fluorite,alum... 相似文献
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