摘要：This paper analyzes the development of lime rotary kiln in 2014, defines the main assess-ment indexes for the technologies of large lime rotary kiln and proposes new technologies and main problems of the lime rotary kiln in 2014.Finally, the paper prospects the technical development of lime rotary kiln for 2015.%对2014年石灰回转窑发展状况进行分析，制定了大型石灰回转窑技术主要考核指标，阐述了石灰回转窑在2014年的新技术和当前存在的主要问题，并对2015年石灰回转窑发展的技术前景进行了展望。
摘要：耐火材料施工是形成RH炉工程项目实体的过程，也是形成最终精炼炉的重要阶段。所以，RH炉施工阶段的质量控制是工程项目质量控制的重点。本文将主要对RH炉工程施工阶段质量控制的内容进行分析，就如何加强施工阶段的质量控制提出一些看法。%Refractory construction process is the forming process of RH furnace project entity and the important stage of the formation of final refining furnace.So, the quality control of RH furnace con-struction stage is the key point of the quality control in the whole project .This paper mainly analyzes the quality control in construction stage of RH furnace and proposes some opinions on strengthening quality control of the construction stage.
摘要：采用废硅砖熟料生产轻质硅砖，通过选用无烟煤粉、复合烧失物XW、焦炭粉等作为烧失剂分别进行添加填充实验，研制出成品轻质硅砖，通过对实验结果的对比分析，优选出一种可以明显减少烧成时制品飞边飞棱现象、提高产品外观质量的烧失物。%Experiments have been done to produce light weight silica bricks by adding arthracite duff,composite ignition loss agent XW and coke fines respectively as ignition loss agent into waste silica brick chamotto.On comparative analysis of the experimental results, an optimal ignition loss agent is chosen, which can obviously reduce the lacking edges and improve the appearance of the fired brick.
摘要：Adding Cr 2O 3(0, 1%,2% and 4%,in mass) to the experimental basic formulation of steel-tapping hole filling refractory, the effects of different Cr2 O3 contents were discussed.The results show that the corrosion resistance increased obviously when Cr2 O3 was added, and the bulk density and strength reduced a little.When Cr2 O3 addition is 2%, the best comprehensive property was obtained.%在填充料的常规配方中，分别添加质量分数为0、1％、2％、4％氧化铬，研究了不同氧化铬加入量对材料性能的影响。结果表明：氧化铬的引入明显提高了材料抗渣性能，但同时导致材料体积密度和强度略微降低，加入2％的氧化铬时，材料综合性能最好。
摘要：Rim usually appears in production of calcined lime in coal type rotary kiln of active lime , temperature change and rim falling-off in the process of rim treatment can damage the refractory, which require high strength and thermal shock resistance.The selection of refractory relates to the proper running of rotary kiln.%燃煤式活性石灰回转窑在煅烧石灰的过程中经常出现结圈，在处理结圈的过程中由于温度的变化及结圈的脱落造成耐火材料的损坏，因此对耐火材料的强度及抗热震性提出了很高的要求，耐火材料选择是否合理关系到回转窑能否正常运转。
摘要：通过对高炉煤气中HCl侵蚀热风炉耐火材料的研究发现，HCl气体可以促使黏土砖中硅酸盐玻璃质和隐晶质铝硅酸盐向晶体莫来石和方英石的转化。 HCl气体还可以促使硅砖中的方英石向鳞石英转化，颗粒结晶度明显变差，容易导致硅砖内部颗粒因膨胀不均匀而产生龟裂现象。%This paper studies the blast heater refractory erosion caused by HCl in blast furnace gas. It is found that in clay bricks, HCl gas can promote the transformation from silicate glass phase and recessive aluminum silicate into mullite and cristobalite and in silica bricks, HCl gas also can pro-mote the transformation from cristobalite into tridymite, however obviously decreases the degree of crystallinity of the particles and leads to cracks because of the irregular expansion of the particles.
摘要：介绍了混料式石灰竖窑的发展现状，重点对混料式石灰竖窑发展的技术创新方向进行了分析探讨，认为提高矿石利用率、降低能源消耗、操作优化创新必然成为混料式石灰竖窑低成本生产的技术创新方向。进一步指出了混料式石灰竖窑生产降本增效的基本思路。%This paper introduces the status of shaft lime kiln with mixing fuel, chiefly analyses the direction of technology innovation and ascertains that innovation on increasing ore utilization ratio, saving energy and optimizing operation will be the direction of technology innovation for low-cost production, and further proposes the basic thought on how to increase production efficiency and lower costs for shaft lime kiln with mixing fuel.
摘要：探讨了重庆钢铁集团现有石灰石原料、燃料情况以及石灰成品需求现状，研究了国内外先进活性石灰生产技术，结合建立针对活性石灰系统的三层模糊综合评价系统，根据专家和管理层分析，最终确定了重钢活性石灰项目的技术选型。%This paper discussed the status of limestone, fuel and demands for lime products of Chongqing Steel Group and studied the lime production technology at home and abroad.By establis-hing the three layers fuzzy comprehensive evaluation system for the active lime system and based on analysis of experts and managers,technology selection of active lime project was finally determined.
摘要：分析焦炭石灰竖炉炉衬损坏机理，选用适宜材质的衬砖做炉衬。采用合理的砌筑方式延长竖炉炉衬寿命，满足了炼钢正常生产需求，提高了经济效益。%This paper analyzes the failure mechanism of the lining of lime shaft kiln with coke as fuel and selects proper bricks as kiln lining.It is found that the lining life can be prolonged by reasonable masonry methods which can meet the normal demand of steel-making and also improve the economic benefits.
摘要：简要介绍了Al2 O3－SiC－C质浇注料的现状与组成，分析了 Al2 O3－SiC－C质浇注料作为铁沟内衬用材料存在的主要损毁因素，系统总结了改进并提高Al2 O3－SiC－C质浇注料性能的研究进展。%This paper briefly introduces the status and composition of Al2 O3-SiC-C based castables and analyzes the chief factors on iron runner lining damage with the material of Al2 O3-SiC-C based castables,and systematically summarizes the improvements and research developments of the perform-ances of Al2 O3-SiC-C based castables.
摘要：This paper studies on the relationship between ladle filler sand and the ladle self-starting pouring.Deeply analyzes from quality,property,adding status of ladle filler sand,and operating status of ladle.The analysis result shows the ratio of ladle self-starting pouring relates to the quality,particle shape & size,thermal conductivity,coefficient of thermal expansion,molten steel penetration resist-ance of ladle filler sand, status and operation cycling time of ladle,stirred mode of molten steel.We need to choose different type of ladle filler sand based on different ladle application environment.%针对连铸钢包自动开浇与引流砂的关系，从引流砂的加入状态、引流砂的材质、性能以及钢包的运行状态几个方面进行了深入的分析。分析结果表明，钢包自开率与引流砂的加入量多少、引流砂的材质、颗粒形状及粒度、引流砂的导热性及热膨胀系数、抗钢液渗透性以及钢包形态、运行周转时间及钢水搅拌形式有关。针对不同的钢包使用环境，需要选择不同类型的引流砂以达到最优的使用效果。
