洁净钢生产技术的发展与耐火材料的相互关系

概述了洁净钢生产技术的发展概况,以及基础耐火材料和功能耐火材料在炉外精炼、中间包冶金和结晶器冶金中的应用和作用;着重评述可为洁净钢生产创造清洁环境和减少污染,有利于提高钢的纯净度和生产效率的耐火材料;指出洁净钢作为钢铁工业的一个战略发展目标,必将给耐火材料带来无限的机遇和光明的前景。     

炉外精炼用耐火材料提高寿命的途径及其发展动向

结合VOD与RH介绍了造成炉外精炼蚀损严重部位的原因。从MgO-Cr2O3、MgO-CaO、MgO-C、MgO-CaO-C、MgO-MgO·Al2O3等耐火材料性能及在精炼中的作用介绍了如何选择耐火材质;从接触角、熔渣粘度、形成高熔点化合物、气孔微细化以及炉渣成分控制、双饱和与精炼温度等方面介绍了提高炉外精炼用耐火材料寿命的途径。最后结合镁铬、镁钙、MgO-C、镁钙碳与无铬耐火材料介绍了炉外精炼用耐火材料的发展动向,并对MgAlON结合镁质耐火材料在炉外精炼中的研究与应用进行了评估与预期。     

耐火材料对钢水洁净度的影响

分析和评述了洁净钢冶炼过程中耐火材料的作用与选择问题。分析了洁净钢冶炼过程中耐火材料对钢中氧含量、硫含量、磷含量、碳含量、氢含量以及夹杂物的影响 ,提出了洁净钢冶炼用耐火材料的选择依据。     

钢包和二次精练用耐火材料及造渣系统(第5部分)

本文是钢包和二次精炼工艺用耐火材料及造渣系统一文中的第五部分。主要介绍了内衬磨损、炉盖和水口座砖的一些情况。     

纳米技术对镁碳耐火材料的改进研究

传统镁碳材料中含碳量较高,不利于洁净钢精炼技术及节能减排技术的发展。采用纳米技术可有效降低镁碳耐火材料的碳含量,更重要的是,纳米碳还能改善材料结构,使其致密化、微细化,提高强度和耐蚀性的同时还可提高镁碳材料的韧性、抗氧化性等物理性能。解决好纳米碳技术在镁碳耐火材料中的分散性及降低其生产成本将是今后世界范围内研究新型镁碳耐火材料的重点。     

越南的耐火材料工业

报道了越南水泥、钢精炼和陶瓷工业用耐火材料的目前状况，纵观了这个国家在耐火材料制品开发方面的情况。     

日本耐火材料技术协会第13次年会

日本耐火材料技术协会第13次年会于2000年4月19日在北九州国际会议馆召开,历时2天。会上共发表论文44篇。其中,有关不定形耐火材料的14篇;精炼用耐火材料6篇;连铸用耐火材料8篇;基础研究8篇;水泥用及其它8篇。     

钢包和二次精炼用耐火材料及造渣系统：（第5部分）

本文是钢饮和二次精炼工艺用耐火材料造渣系统一文中的第五部分。主要介绍了内衬磨损，炉盖和水口座砖的一些情况。     

世界炼钢生产和镁质耐火材料的现状及其发展趋势

探讨了世界炼钢生产、有色冶金及水泥工业等用镁质耐火材料的现状及近10年来的发展趋势。按照资源保护性及符合环保要求的工艺开发了氧气转炉、炼钢电炉、炉外精炼装置、连铸装置、有色冶金及水泥工业用的新一代镁质耐火材料，从而保证了制品的竞争能力。     

氮化硼系复合材料在耐火材料上的应用--Al2O3-C-BN-AlON和Al2O3-C-BN-SiC系复合耐火材料

介绍了Al2O3-C-BN-AlON和Al2O3-C-BN-SiC系复合耐火材料的合成方法，比较和评价了这两种复合耐火材料的性能，指出了Al2O3-C-BN-SiC系复合耐火材料作为精炼和连铸用耐火材料，可望大幅度提高使用寿命。     

连铸用无碳功能耐火材料的研究进展

介绍了汽车钢板的发展趋势及其对纯净钢冶炼的要求 ,详细分析了目前钢包和中间包用含碳耐火材料的使用情况及对钢水和钢坯增碳的影响。综述了无碳浸入式水口、长水口、滑板的研究和使用现状 ,并探讨了无碳功能耐火材料的发展趋势     

Development Tendency of the Refractories for Iron ＆ Steel Industry in China

This paper introduces the developing tendency of refractories for iron and steel industry combined with the new metallurgical techniques applied in iron and steel industry in China. Refractories for blast furnace long service life, smelting reduction iron-making process, secondary refining metallurgies and clean steel making, near net shape continuous casting are described respectively. To meet the requirement of iron and steel industry, the high quality, multi-functions and environment-friendly refractories with long service llfe will be focused and developed in the future. In addition, high grade refractories in China have great developing space and potential market.     

Clean Production of Steel and Refractories in China''''s Steel Industry

The paper describes the importance of clean produc-tion of steel and the relationships amongst sustaining devel-opment of steel industry, environment protection and therole of refractories in the clean production of steel. Themain achievements and main shortcomings in the cleanproduction of China's steel industry have been reviewed to-     

Roles and Progress of Refractories for Clean Steel Technology

This paper presents a general survey of roles and progress of fundamental and functional refractories applied in secondary steelmaking, tundish and mold metallurgy along with the evolution of clean steel technology,focusing on refractories that are to create clean environments, benefit cleanliness and productive efficiency for the clean steal production, in particular, reducing the total oxygen content and inclusion defects in steel. All that arguments have revealed in abundant that the interaction between ...     

Development of Refractories for Continuous Casting

The paper introduces refractories for continuous casting,especially,refractories for continuous casting for clean steel in baosteel.Developing direction of refractoies for continuous casting has been pointed out to satisfy the new metallurgical operating practice.     

耐火材料对钢水杂质的影响

研究不同耐火材料在熔炼汽车用钢(IF)时对钢水中杂质的影响.研究含游离CaO耐火材料对全脱氧镇静钢(AR016)的净化作用.结果表明:用不同耐火材料熔炼时,钢水的杂质成分会发生变化.用镁碳耐火材料熔炼时,钢中C含量会明显增加.用镁铝耐火材料时,钢中Al含量会增加.用含游离CaO的镁钙耐火材料熔炼时,钢中杂质几乎不增加,而且对钢中某些元素,如:磷、硅、硫等还会有明显的降低,因此它是冶炼洁净钢用理想的耐火材料.     

钢铁工业用耐火材料的发展动向

结合当今国际钢铁工业的发展及其对耐火材料的要求，介绍了炼焦、高炉与出铁沟、熔融还原炼铁、铁水预处理、氧气转炉炼钢、高功率电炉与直流电弧炉炼钢、炉外精炼、盛钢桶、连铸中间包及近终形状连铸等的发展中，所用耐火材料的动向。     

我国MgO－CaO系耐火材料在钢铁工业中的应用

回顾了我国ＭｇＯ－ＣａＯ系耐火原料和制品的发展过程，着重介绍了我国ＭｇＯ－ＣａＯ系耐火材料在铜铁工业的炼钢转炉、精炼炉和电炉上的应用状况，并就原料和制品生产中的一些问题进行了讨论。     

Highlights of Recent Advances in Refractories for Iron and Steel Industry in China

Recently procured outstanding achievements in iron and steel industry in China are presented by data or facts in steel output, energy consumption, technical and economical indicators and advanced technologies that are being adopted. The latest achievements in refractonries for this biggest user industry are reviewed, covering new refractories for CDQ coke oven, BF hearth, AOD Lining, long life tundish, SEN for clean steel making and regenerative reheating furnace. The reciprocal relationship is obvious that the rapid development of iron and steel industry has given an impetus to the advance of refractories industry, which in return has contributed greatly to the former.     

Dynamic interaction of refractory and molten steel: Effect of alumina-magnesia castables on alloy steel cleanness

High quality alloy steel is an important material needed for social and economic development. It is of great significance to major national projects and defence security. Refractories are used in the smelting process of steel; they are some of the main sources of impurities which have an important effect on the quality of steel. As alumina-magnesia refractories are the main lining materials used for steel refining, the influence of these refractories on the cleanliness of molten steel under dynamic smelting conditions has been studied. The size, quantity, composition, and structure evolution of inclusions in steel are analysed. The results show that after smelting, the content of alloy elements in the steel is stable, and that the total oxygen content and inclusions in the steel are increased by the corrosion of the alumina-magnesia castables. However, the maximum average particle size of the inclusions in the steel was limited to 20?µm, which did not cause large inclusions in the steel or seriously affect the quality of steel. During the dynamic melting process, because of the presence of Si and Mn in the alloy steel, the inclusions changed from homogeneous CaS wrapped Al₂O₃-MgO composite sphere to MnS wrapped egg-shaped structure. The alloy elements in steel were found to be beneficial, as they reduced the effect of alumina and magnesia inclusions on the quality of steel. The results indicate that it is feasible to smelt high quality alloy steel using alumina-magnesia carbon-free castable, and that it would be better to limit the refining time to 45?min during smelting.