废钢加工处理过程中二次污染的防治

随着国家对环境方面的要求不断提高和企业对环保的重视,废钢加工处理过程中二次污染的防治问题逐渐成为物流分公司急需解决的重要问题,为了对废钢加工处理过程中的二次污染起到有效防治,为攀长特灾后重建废钢的合理环保利用提供一定的技术支撑,本文重点分析了废钢铁加工处理过程中二次污染的表现形式和有效防治途径,并提出了相应防治办法,以便为攀长特的二次创业提供更优质的废钢资源。     

废钢作为可持续发展资源在钢铁工业中的应用

结合钢铁工业在降耗,节能,环保等方面的要求,分析了世界废钢和中国废钢的资源分布情况,对未来10－15年废钢资源形成及需求进行了预测,建立了废钢的产业地位：废钢是钢铁工业可持续发展的重要资源,特别是电炉炼钢重要的,必不可少的原料。     

加快废钢利用促进钢铁工业节能减排

分析了我国废钢资源的需求及利用状况,以及未来废钢资源的应用前景。为适应当今钢铁工业节能、降耗、环保等方面的发展要求,应该大力发展废钢加工产业,加快废钢资源利用,实现我国钢铁工业的可持续发展战略。     

100 t竖式电炉高效炼钢技术分析

分析了安钢100t带指形托架的竖式电炉（FSF）高效炼钢工艺中的废钢预热、铁水热装、强化用氧等核心技术；讨论了竖式电炉在生产实践中遇到的废钢原料和环保问题；提出了培育废钢加工市场、深加工废钢、适当调整废钢布料方式和结构以及完善电炉除尘系统设计工作的改进意见。     

韶钢高炉加废钢生产实践

随着环保方面减少碳排放压力的增加，废钢的价格优势更加凸显，高炉添加废钢得到广泛推广和运用。阐述韶钢炼铁厂通过几年生产实践摸索，在高炉加废钢方面找到适合自己高炉特点的添加废钢的操作方法及性价比评价模型，为高炉强化冶炼、降低消耗，实现低碳炼铁提供了一条新途径。     

中国废钢资源供需状况分析及应对措施

电炉短流程钢厂在占地、投资、节能、环保等方面都优于转炉长流程钢厂,提高电炉钢比是冶金工业发展趋势.中国废钢资源不足,电炉钢比一直徘徊在较低水平,与西方主要产钢国存在较大差距.通过对中国废钢现状分析和未来供需状况预测,表明国内废钢资源供需矛盾将在很长一段时间内存在,并从国内角度提出了5项保障中国废钢资源供给的措施和建议.     

我国电炉炼钢发展趋势

近年来,随着我国打击"地条钢"取缔中频炉以来,废钢资源逐步流向正规企业,加上积蓄废钢量的增加,废钢产出量也在不断增加,钢厂开始大量使用废钢,因此,电炉建设成为热点。通过对长短流程钢水成本的分析比较,判断一定假设条件下的零界价差点,在沿海应以长流程为主,内陆以短流程为主。由于电炉在节能、环保等方面与转炉相比都有明显的优势,加上国家在节能和环保政策方面的不断升级,为我国电炉钢发展带来了新希望。     

节能减排约束下的废钢回收生产计划研究

漫无目的回收废钢导致了回收时间长、数量小、质量低等问题,无法满足节能减排要求,为此,对节能减排约束下废钢回收生产计划进行了研究。针对节能减排约束下废钢回收计划对回收量与需求量关系展开分析,建立废钢需求量模型并对回收进行预测;再制造是将废钢寿命周期延长,以高效、节材、环保为基础,使用先进技术手段将废钢修复或改造,进而提高回收的质量,缩短回收时间,增加回收数量。     

转炉炼钢最佳废钢比计算模型

近年来随着废钢的不断堆积和环保压力的加大,大部分钢铁企业通过提高转炉废钢比来降低铁耗,该模式造成转炉冶炼成本增加的同时,也给转炉操作带来困难,因此转炉合理废钢比的预定一直是钢铁企业十分关心的问题。依据实际生产数据,采用拟合的方法构建吨铁利润和废钢比之间的函数表达式,并以邯宝炼钢厂典型钢种DC06为例,分别计算不同废钢价格下使吨铁利润达到最大的废钢比。结果表明,通过模型计算DC06钢种最佳废钢比为12.1%,即铁水消耗为967 kg/t,而该钢种根据经验确定的最佳铁水消耗为950 kg/t,两者相差不大,验证了模型的准确性。     

发展电炉炼钢须破除多重阻力

正国内炼钢逐渐减少对外矿的依赖,充分利用废钢资源是政府引导发展的大形势;目前废钢成本高于铁水,企业的趋利性将成为废钢使用量继续增长的最大阻力,而且对长流程炼钢工艺来讲,废钢使用量也不可能无限增加。要促进钢铁行业品种结构优化升级,同时考虑到行业环保水平的提升,电炉炼钢工艺的发展就成为重点。那么,目前我国     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.