铝渣复合脱硫剂的应用研究

本文对铝渣复合脱硫剂在可锻铸铁和ＺＧ４５Ｍｎ铸钢中的炉外脱硫作用与效果进行了系统的试验研究和理论分析，表明，采用石灰－铝渣－萤石固态复合脱硫剂可使可锻铸铁、铸钢脱硫率高３０－４０％。同时可改善可锻铸铁中的石墨及夹杂物形态，提高机械性能，并可缩短可锻铸铁第一阶段石墨化退火时间，为铝渣在冶金工业中的综合利用开辟了新途径。     

铝渣灰脱硫剂对提高LF炉脱硫效果的影响

叙述了用铝渣灰脱硫剂提高脱硫效果缩短ＬＦ炉处理的时间的试验，着重分析了此脱硫剂的脱硫效果和影响因素，该试验的工艺要点是：控制好顶渣成分，提前造渣，钢液脱氧良好，增加吹氩强度，结果表明，用含铝渣灰的脱硫剂处理钢水，当每ｔ钢加入量为１５～２０ｋｇ时，ＬＦ炉处理时间平均缩短１０ｍｉｎ，平均脱硫率提高１６％。     

含钡低钛高炉渣硫分配系数的研究

就ＢａＯ质量含量１．０％－３．７％，ＴｉＯ２质量含量１．５％－４．０％，炉渣二元碱度（ＣａＯ／ＳｉＯ２）０．９５－１．１５的高炉渣脱硫能力进行了研究。结果表明：在实验条件下，炉渣脱硫反应是二级反应；炉渣硫分配系数Ｌｓ随二元碱度提高而提高；渣中ＴｉＯ２为３％时，Ｌｓ有一峰值。     

MgO对高铝高炉渣脱硫的影响及其动力学分析

随着廉价高铝铁矿石的不断使用,高炉炉渣内Al2O3含量也随之升高,这势必会影响高炉炉渣的各项冶金性能。为深入研究高铝高炉渣脱硫性能,明确MgO含量对高铝渣脱硫性能的影响,笔者通过改变高铝渣中MgO的含量,分别设定渣中MgO含量为5%、9%、13%MgO,研究不同MgO含量高炉高铝渣的脱硫性能及其脱硫动力学。结果表明:MgO含量不仅对高铝渣的黏度、脱硫能力有不同的影响,还使炉渣的脱硫速率发生了很大的改变。MgO含量越高对应的黏度越低,脱硫能力越大;但脱硫速率却表现出了不同规律,9%MgO的脱硫速率表现为最大;经过综合比较,当碱度固定为1.1、Al2O3含量固定为17%时,MgO含量为9%的炉渣同时具有较好的粘度和脱硫性能。     

冶金工业废渣所配制LF炉精炼渣的脱硫试验研究

以3种冶金工业废渣为主要原料配制LF炉精炼渣,并在某钢铁厂LF炉精炼生产中进行脱硫试验,分析新配制的LF炉精炼渣在冶炼过程中的脱硫效果及其影响因素。结果表明,与原用渣相比,新配制的精炼渣在出钢过程中的平均脱硫率明显提高,其中配加铝渣后的精炼渣脱硫效果最优,出钢过程的平均脱硫率可达57.6%,平均冶炼时间缩短20.7 min;铝渣中的铝能还原渣中的FeO,降低渣的氧化性;当精炼渣的碱度(R)为2.3、渣指数(MI)值在0.28~0.5范围内以及渣中w(FeO)0.65%时,可使渣钢间硫的分配系数LS100,从而取得良好的脱硫效果。     

喷射鼓泡烟气脱硫（Ⅰ）—化学吸收工艺的研究

该文阐述了喷射彭泡烟气脱硫的原理与喷射鼓泡反应器的结构，采用该反应器实验了湿法烟气脱硫的化学吸收工艺。实验结果表明，吸收浆液的ＰＨ值、气体喷射器的浸入深度Ｌ、气体压降△ｐ、石灰的质量百分数浓度ω及石灰颗粒尺寸对脱硫反应过程和系统的操作有较大的影响。控制ＰＨ＝５．５－６．５，Ｌ≤２００ｍｍ，△ｐ≤１８００Ｐａ，ω≤５％和使用２００目的石灰颗粒，可达到９０％以上的脱硫率和９５％以上的钙利用率，以及系统     

MnO高钛渣的脱硫能力

对配加０－５％ＭｎＯ主渣脱硫能力进行了研究，测定了硫在渣铁间平衡分配系数，并对含ＭｎＯ钛渣进行了动力学实验研究，结果表明，硫在渣铁间平衡分配系数随ｎＯ初始含师大炉度的升高而提高；随ＴｉＤ２初始含量的升高而下降，在无搅拌条件下，脱硫反应为二级反应；表现活化能为１６２ｋＪ／ｍｏｌ；硫在渣中扩散为反应过程的限制环节，指出了 能力的措施。     

钙基脱硫过程矿物质对结渣影响的实验研究

对六盘水无烟煤中添加石灰石的钙基脱硫试样的结渣特性、加热过程中矿物质特性进行了实验研究．通过对不同混合比的钙基脱硫灰样熔融特性温度的测定、利用X射线衍射分析对加热过程中钙基脱硫灰样的矿物质特性进行了分析．结果表明：六盘水无烟煤中添加石灰石,当钙硫质量分数之比为2时,钙基脱硫灰样结渣特性由中等变为严重;当钙硫质量分数之比为3时,钙基脱硫灰样结渣特性又变为中等．究其原因是由于高温下,钙硫质量分数之比为2时钙基脱硫灰样中产生较多钙长石和钙(铝)黄长石等熔点较低的矿物质,从而使结渣特性由中等变为严重;当钙硫质量分数之比为3时,钙基脱硫灰样中的部分矿物质分解生成难熔矿物质方钙石,使结渣特性又变为中等．     

以RE_2O_3为变质剂生产球墨铸铁的研究

用稀土氧化物渣处理铁水，在１４５０℃下处理２０ｍｉｎ，即可冶炼出稀土含量在０．０１％～０．０４１％范围内、碳当量ＣＥ在３．８３％～４．９３％范围内的球墨铸铁。脱硫反应、稀土氧化物还原反应热力学条件具备，只要搅拌条件良好，都可获得成功。而铁水磷含量应当降低，以确保铸件力学性能     

示波极谱法测定饮料中的痕量铝

本文提出示波极谱法测定饮料中的痕量铝，在０．００２％茜素Ｓ—０．４％三乙醇胺－０．０４Ｍ亚硫酸钠体系中，铝能产生灵敏的寻数极谱波。在铝浓度为０．０１μｇ／ｍｌ—０．５μｇ／ｍｌ范围内与峰电流具有良好的线性关系。方法简单、快速、结果满意，适用于饮料中痕量铝的测定。     

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.     

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.     

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.     

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.     

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that