转炉顶底复合吹炼技术

转炉顶底复合吹炼技术本钢１２０吨ＬＤ转炉采用复吹技术（Ｎ。、Ａｒ搅拌）可提高金属收得率０．５％～１．０％，节省铁合金２％，提高钢的纯净度和炉龄５０～１００炉。攀钢ｌ～３号转炉应用复吹技术提高金属收得率０．５％，提高合金收得率２％，降低石灰消耗７ｋｇ／...     

硅锰铁合金行业中的清洁生产

本文综述了硅锰铁合金冶炼过程中存在的严重的污染问题,通过末端治理污染的种种弊端,指出了清洁生产是我国硅锰铁合金行业的必由之路,提出相应的硅锰合金行业清洁生产技术和指标要求,终实现硅锰铁合金行业的清洁化,促使硅锰铁合金行业能够可持续发展。     

中国铁合金的市场概况与预测

目前中国铁合金生产能力达到800万t，其中锰、硅、铬等三大品种的生产能力及占铁合金生产能力的比重分别为：锰系铁合金320万t，占40％；硅系铁合金260万t，占32．5％；铬系铁合金110万t，占13．7％。     

高炉冶炼硅锰合金试验

高炉法辅助电炉因地制宜地生产硅锰铁合金,可以充分利用我国贫锰矿资源,并有可能提供一个新的高炉铁合金品种。 在理论分析的基础上,在一座36m~3的小高炉上进行了工业冶炼试验。试验表明:在高炉上用富氧鼓风冶炼含Si=12—14％的硅锰铁合金,在技术上是成功的,在我国条件下,经济上也是有益的。     

转炉冶炼静态控制模型

以物料平衡和热平衡为理论基础,构建了转炉冶炼静态控制模型.根据原料条件和冶炼钢种进行转炉优化配料计算,利用氧步控制转炉的造渣过程,实现了钢液平稳升温、降低钢液喷溅事故、提高钢液收得率等目的.同时,通过优化出钢过程中合金的使用效率,节约了转炉冶炼成本.     

真空感应熔炼过程中微量Bi的挥发

研究表明，实验条件下向钢液中加入纯铋时铋的收得率为７．５４％。钢液中铋的军发过程受液／气界面的挥发反应及液相边界层中的扩散混合控制，共传质系数Ｋ２３在１０＾－２ｃｍ／ｓ数量级；实验得出了Ｋ２３值及钢液中铋浓度的经验计算公式；还探讨了熔渣覆盖对钢液中的铋挥发的影响。     

在等离子体条件下用MnO_2对铁液进行含锰还原合金化的研究

还原合金化，即当炼钢或铸造过程需要进行合金化时，不用添加铁合金，而是直接添加所需合金元素的氧化物，通过还原使其合金化。研究结果表明：在等离子体条件下，３０ｍｉｎ内可以达到合锰目标值为１２％～１８％的还原合金化。这一新的冶炼工艺特有可能从根本上改变铁合金的生产现状．     

锰矿直接合金化研究

以冶金热力学为基础，通过实验验证建立了锰矿直接合金化效果与冶炼工艺参数间的定量关系，讨论了各因素对锰的收得率、终点锰含量的定量影响。可用此关系预见具体冶炼条件下的合金化效果。     

高品质IF钢连铸中间包降低残钢量的水模型研究

为解决某钢厂生产高品质IF钢中间包死区较大,夹杂物不能充分上浮,浇注结束时残钢量过多等问题,通过中间包水模拟实验对挡坝结构进行了优化.结果表明:增加挡坝高度,并开向上角度通钢孔,可有效提高钢液向钢液面的运动趋势,延长钢液运动路径,钢液滞止时间提高12.5%,死区减少36%;浇注结束时部分钢水从通钢孔流出,避免了挡坝间残留大量钢液而渣全部进入浇注区现象的发生,理论残钢量从9 t降到4.5 t,金属收得率提高.     

钛铁合金所含杂质对 Ti-IF 钢洁净度的影响

通过氧氮分析、SEM和EDS对Ti‐IF钢冶炼过程不同阶段钢液及铸坯进行分析,研究钛铁合金所含杂质对Ti‐IF钢洁净度的影响。结果表明,Ti‐IF钢冶炼过程添加FeTi70时,RH出站处钢液中的平均氮含量较添加FeT i30时增加值为8．86×10－6,铸坯平均氮含量较添加FeT i30时增加值为10．83×10－6,这是由于所用FeTi70合金中T（O）、N含量较高,这些在RH冶炼过程中较难去除的 O、N元素形成尺寸不同的含氧夹杂,其结果降低了T i‐IF钢洁净度。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.