邯宝炼铁厂1~#高炉降本增效实践

面对形势严峻的钢铁市场,邯宝炼铁厂1#3 200 m3高炉调整操作模式,采取严抓原燃料管理、不断提高操作水平、实行低硅冶炼、焦丁全部入炉、优化生矿配比等一系列措施,达到了降本增效的目的,2012年全年平均焦比为315.42 kg/t,煤比为131.69 kg/t,平均燃料比483.93 kg/t,吨铁成本降低356.9元。     

提高2500m~3高炉冶炼钒钛矿喷煤比的实践

介绍了承钢5#高炉(2 500 m3)炉役后期,在原燃料质量不断恶化的情况下,提升喷煤比的攻关实践。通过采用高炉特护,强化原燃料质量控制,维持合理的操作制度,优化出铁组织,加强事故控制,促进管理制度的提升等一系列措施,使喷煤比由133 kg/t提高至150 kg/t,吨铁成本降低115元,经济效益明显。     

三钢4#高炉降低能耗生产实践

目前钢材市场形势急剧恶化,为了降低生铁成本,三钢集团公司提出低硅冶炼和低碳炼铁的方针以提高竞争力.4#高炉通过改善原燃料质量、优化高炉操作制度、加强炉前出铁管理及实施冲渣水、除尘分段调频等措施,使燃料比、电耗和水耗较大幅度降低.     

天钢3200m~3高炉提高块矿配比实践

为了降低高炉炼铁成本,天钢通过调整3 200 m3高炉炉料结构,优化造渣制度、控制合理的喷煤比、调整冷却制度以及维持合理操作炉型等措施,将块矿配比由12%提高到25%,降低了燃料比,实现了高炉稳定顺行和降本增效的目标。     

宣钢2#高炉低碳环保冶炼技术实践

介绍了宣钢2#高炉为降低燃料比所采取的技术措施。通过控制炉型参数,合理的上下部调剂,低硅冶炼,经济喷煤,精料技术,高压、高风温、高富氧率操作,优化炉前出铁组织等组合措施,宣钢2#高炉的燃耗大幅下降,焦比降低6 kg/t,煤比降低3 kg/t,燃料比降低5 kg/t,二次能源焦丁配加量提高了4kg/t,风温提高了28℃。在获得可观经济效益的同时,减少了吨铁碳消耗,降低了环境污染,得到了很好的经济效益和环境效益。     

韶钢8号高炉低燃料比冶炼实践

总结韶钢8号高炉低燃料比冶炼的管理措施和操作实践。通过加强入炉原燃料质量的管理,实现低渣量冶炼,优化高炉操作制度,提高煤气利用率,稳定炉况;提高热风温度、适宜的富氧,实施低硅冶炼技术,加强炉外出铁的管理,不断提高煤比、降低焦比,使8号高炉燃料比下降到505 kg/t左右,达到全国同类型高炉先进水平。进一步降低生产消耗及成本,使高炉各项技术经济指标大幅度提高。     

河钢邯钢7#高炉经济煤比探索实践

介绍了河钢邯钢7#高炉降低煤比,寻找经济煤比的具体措施。通过强化原燃料质量监督管理、探索与原燃料条件相适应的布料制度、细化出铁参数、明确炉内操控标准并制定应急预案等措施,使高炉操作完成了从经验操作到量化操作的转变,找到了适合该高炉的最优煤比。     

营钢2300m~3高炉使用二级焦降成本实践

阐述了营钢2300 m~3高炉使用二级焦的理论依据和技术措施。通过槽下上料及炉顶布料手段使用少量"优质"二级焦炭起料柱骨架作用,使用大量"劣质"焦炭起发热剂、渗碳剂、还原剂作用;利用提高焦炭粒级、降低入炉有害元素负荷和定期排碱措施提高焦炭抗劣化能力,高炉实现了使用二级焦冶炼的要求。使用二级焦冶炼后,燃料消耗指标总体向好,焦炭采购成本下降300～500元/t,吨铁燃料成本下降超过100元/t。     

莱钢6~#高炉低成本冶炼实践

山钢股份莱芜分公司炼铁厂6#高炉通过建立高炉成本控制模型,优化上料、冷却、送风、渣铁排放等系统,提高煤气利用率,控制合理的热制度和造渣制度,提高煤粉置换比,降低能源消耗等措施,保证了高炉长期稳定顺行,实现了低成本冶炼,全年平均煤比达到170 kg/tFe,燃料比达到510 kg/tFe。     

唐钢1#高炉经济炉料冶炼实践

唐钢炼铁厂1#高炉紧跟市场变化,实行经济炉料战略,在保证高炉稳定顺行的前提下,通过合理控制冶炼强度,优化高炉操作制度,科学调整炉料结构等措施,使综合焦比和综合燃料比没有大幅上升,为降低生铁成本打下了良好的基础。     

Effects of Ce3＋ , Nd3＋ , Gd3＋, Tb3＋ and Lu3＋ ions on Formation of CaCO3

The effects of lanthanides at various concentrations on CaCO3 crystal growth were studied by X-ray diffraction (XRD), infrared spectra (IR), X-ray photoelectric energy spectra (XPS) and inductively coupled plasma mtms spectrometry (ICP-MS). It was found that the calcite, a stable form of CaCO3 in thermodynamics, is the predominant species. The research indicates that lanthanide ions (Ln3 ) can partly substitute the Ca2 in the lattice of CaCO3 crystals, and change the crystal characterization and direct the ordinal growth of CaCO3 crystals.     

3-Hydroxy-3-methylglutaric aciduria: deficiency of 3-hydroxy-3-methylglutaryl coenzyme A lyase

Basic principles are offered to support the suggestion that use of special care space must be made with a mind toward prevention of obsolescence. Certain conventional design features should be examined critically and decisions made as to their applicability to the needs of a particular program.     

Photoluminescence of Dy~(3 ) Ions in Ba_3La(BO_3)_3

Dy3 isanimportantactivator .Ithasbeenexten sivelyappliedinmanyluminescentmaterials .Inre centyears ,someresearchershavestudiedthespec trumcharacteristicsofluminescentmaterialsdopedDy3 [1～ 6 ] andhaveobtainedsomemeaningfulre sults .InordertodevelopnewfluorescentmaterialsanddiscussthephotoluminescentruleofDy3 inthecomplexborate ,thispaperstudiesthephotolumines centcharacteristicsofDy3 inBa3La(BO3) 3host ,anddiscussestheinfluenceofthecharge to radiusratio(z/r)ofrareearthionRE3 andthecon…     

Dy^3＋在（LaO）3BO3和（GdO）3BO3中的光致发光

研究了Ｄｙ＾３＋在（ＬａＯ）３ＢＯ３和（ＧｄＯ）３ＢＯ３中的光致发光;探讨了基质晶体结构、稀土离子ＲＥ＾３＋的电荷半径比（Ｚ／ｒ）和Ｄｙ＾３＋含量对（Ｄｙ＾３＋）发光强度及发光颜色的影响;分析了（ＧｄＯ）３ＢＯ３中Ｂｉ＾３＋对Ｄｙ＾３＋发光的敏化作用及Ｄｙ＾３＋４Ｆ９／２→＾６Ｈ１３／２超灵敏跃迁发射的自身浓度猝灭机理。     

Ca3La(BO3)3中Dy3+的光致发光

研究了Ca3La(BO3)3基质中Dy^3 的发射光谱和激发光谱。结果表明，强的激发峰值为351nm、367nm和386nm；Dy^3 的488nm和578nm发射的最佳浓度均为xDy=0．03；Dy^3 发射的黄光和蓝光强度比(用Y／B表示)随Dy^3 浓度的增加而逐渐增大；Dy^3 的^4F9/2→^6H15/2、^6H13/2跃迁发射的浓度猝灭机理均为电偶极-电偶极相互作用；同时还探讨了Ce^3 对Dy^3 发光的敏化作用。     

Optical Spectroscopy of Er^3＋ and Er^3＋/Yb^3＋ Co-doped Bi2O3-GeO2-B2O3-ZnO Glasses

The （60 - x）Bi2O3 - xGeO2-30B2O3-10ZnO （x = 5, 10, 20, 30 molar percent） glasses doped with Er^3＋ and Er^3＋/Yb^3＋ were fabricated using the melting method. The thermal stability of the glasses was studied with their DTA curves. The results show that the difference between the glass transition temperature and the crystallization onset temperature increases with the increase of GeO2 content, indicating that the thermal stability of the glass has become better. The absorption spectra were recorded and the stimulated emission cross sections were calculated using the McCumber theory. The Ω2, O4, and Ω6 parameters,the transition probability, the radiative lifetime, and the fluorescence branch ratio of Er^3＋ for optical transition were calculated from their absorption spectra in terms of reduced matrix U^（t）（λ = 2, 4, 6） character for optical transitions. The infrared emission of Er^3＋ was measured upon excitation with 970 nm light and the full width at half-maximum （FWHM） was estimated from the emission spectra. The pumping efficiency and the intensity of the emission at the 1.54 μm band of Er^3＋ were enhanced considerably by co-doping Yb^3＋ .