50 m2烧结机技术改造

为提高烧结矿产质量，选择科学、合理的改造方案对50m^2烧结机进行扩容改造，将50m^2烧结机改造为60m^2烧结机，改造后使单机烧结矿产量提高20％，质量指标也有大幅提升，取得了良好效果。     

本钢炼铁厂360m~2烧结机的设备改造

本钢炼铁厂有一台360m2烧结机,年产370万t烧结矿,为了解决高炉增产对烧结矿的需求。现采取了对360m2烧结机进行设备改造,来提高烧结机的产能,满足高炉的生产需要。经过充分的论证,于2009年10月26日对360m2烧结机开始进行设备改造,为期5天的施工,取得了360m2烧结机的设备改造的顺利完成。     

对首钢二烧冷矿改造工艺的分析

首钢二烧车间原为两台75米~2烧结机生产热烧结矿。1977年底为了配合首钢二高炉大修改造,决定在二烧车间扩建3~*烧结机,并对1~*,2~*烧结机进行改造,采用机上冷却工艺生产冷烧结矿。同时增设烧结矿的筛     

邯宝炼铁厂360m~2烧结机扩容改造及效果

为提高烧结矿产能,满足高炉提高烧结矿配比后对烧结矿产量的需求,邯宝炼铁厂对烧结车间1#烧结机进行扩容改造。针对烧结机扩容改造后产能提升面临的生产组织问题,从工艺和管理方面采取了一系列的技术措施,全年烧结矿产量提高31万t,改善了烧结矿质量,降低了固体燃耗,取得了较好的效果。     

宁钢烧结机头电除尘改造不间断生产实践

宁波钢铁烧结机头电除尘已经运行十几年需要进行改造,改造期间烧结机不能停机,两个系列的除尘器需要轮流改造,改造期间烧结矿质量要满足高炉要求,围绕电除尘改造期间烧结机不停机和稳定烧结矿质量这两个条件,经过技术分析和现场勘查,确定改造方案,并配套相关技术达到了预期的效果。     

莱钢降低烧结矿返矿率实践与创新

莱芜分公司炼铁厂4#265 m2烧结机投产于2005年,烧结矿占高炉炉料结构70%⁸0%,近几年高炉产能不断提升,为了满足高炉生产需求,4#265 m2烧结机通过一系列的设备改造、工艺改进,使烧结矿返矿率由24%降低到21%,烧结矿产量由单班2 550 t提高到2 650 t,满足了高炉生产需求。     

户畑厂3号DL型烧结机的改造和改造后的操作情况

1 前言新日铁八幡厂在若松和户烟两个地区共有两台(分别为600m~2和320m~2)烧结机,专为两座4000m~3高炉提供烧结矿。由于该公司决定减少粗钢产量,所以该厂决定使其中一座高炉和若松地区的烧结机停产。在若松烧结机停产期间,户烟烧结机的产量由9800t/d增加到14310t/d,以满足1号高炉日产生铁9560t的需要(烧结矿为80％)。为了提高产量,烧结机长度从80m加长到120m。与此同时,在烧结机上还应用了各种新技术。本文将介绍为提高烧结机产量而进行的改造项目、烧结机改造后的操作结果和烧结机所采用的各种新技术。 2 烧结机改造项目户畑厂改造后的烧结设备示于图1,表1(略)所列为改造前后主要设备的技术条件。 2.1 布置情况     

提高烧结矿质量的措施

针对宣钢公司烧结产线运行现状,从生产设备改造、优化配矿和探索适宜的烧结矿成分控制范围入手,进行了脱硫增压风机增容、烧结机系统漏风治理、提高烧结机台车挡板等改造。通过加大试验方法投入,为配加低价料和提高烧结矿质量提高技术指导。经过不断改进,烧结机运行状态明显改善,2016年烧结矿质量指标比2015年有较大提升。     

烧结机系统密封性创新改造与实践应用

联合特钢中一台230m2烧结机由于使用年限较长,烧结机漏风率达到55％,已影响到了烧结矿的产能和能耗,因此有必要对其系统密封性进行创新改造.本文主要是从烧结机系统密封性考虑,根据该烧结机密封状况的跟踪调查结果,确定了烧结机主要漏风部位,并结合当前烧结机创新性密封技术提出了改造方案.通过烧结机头机尾密封、台车滑道密封、台...     

新钢3号烧结机改造工程设计特点及其生产实践

一、概况 江西新余钢铁总厂烧结厂原使用2台24m~2尾部弯道式烧结机(机外冷却),向总容量为936m~3的3座高炉提供烧结矿,烧结矿产量远远不能满足高炉需要,故采取了易地改造大修烧结机的方案,以增加烧结矿产量。 新钢3号烧结机易地改造大修中,采用了一些国内行之有效的先进技术及设计(工程由长沙黑色矿山设计院设计),取得了一定效果,但还存在一些问题,需要解决。     

Defining spinal mobility in ankylosing spondylitis (AS). The Bath AS Metrology Index

OBJECTIVE: To determine the most appropriate clinical measurements for the assessment of ankylosing spondylitis (AS) to develop the new metrology index. METHODS: One hundred and ninety-three individuals with AS were studied. The patients reflected the entire spectrum of cases of AS. Metrology was performed on 327 occasions. First the metrology (20 measurements) of 43 patients was analyzed. From this, 5 simple clinical measurements were defined which most accurately reflect axial status: cervical rotation, tragus to wall distance, lateral flexion, modified Schober's, and intermalleolar distance. These measurements were assessed for reliability, speed and both inter and intraobserver variability in another 40 patients. RESULTS: Analysis of the first group of 43 patients and a subsequent group of 54 patients, using the 5 measurements that constitute this new Bath AS Metrology Index (BASMI), demonstrated that they accurately and reliably mirror the 20 clinical measurements assessed previously (r = 0.92, p < 0.001). In a new group of 40 patients the measurements were demonstrated to be accurate and reproducible for both intraobserver variability (r = 0.99, p < 0.001) and interobserver variability (r = 0.97, p < 0.001). In a further 56 patients, admitted for inpatient therapy, an improvement in the BASMI from 3.34 (SD 2.71) to 2.16 (SD 2.42) was noted over a period of 3 weeks (regardless of disease severity) which indicates a sensitivity to change (chi 2 = 6.55, p < 0.01). The mean improvement over baseline was about 30%. CONCLUSION: Five clinical measurements provide a composite index (BASMI) and define disease status in AS. The BASMI is quick (7 min), reproducible and sensitive to change across the disease spectrum.     

PSYCHOLOGY AS A PROFESSION.

IN 1954, THE AMERICAN PSYCHOLOGICAL ASSOCIATION, PUBLISHED A POLICY STATEMENT ENTITLED "PSYCHOLOGY AND ITS RELATIONS WITH OTHER PROFESSIONS." A REVISION, UPDATING, AND RETITLING OF THE FORMER STATEMENT IS PRESENTED IN ORDER TO REFLECT THE DEVELOPMENT AND THE GROWTH OF THE PROFESSION. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

钢铁大学网站历年虚拟炼钢挑战赛总结及其资源应用

介绍了世界钢铁协会名下钢铁大学网站虚拟炼钢挑战赛的历年赛事情况，列举了一些知名公司对该资源的利用，建议中国钢铁公司能利用并参与到这个国际性学习活动中来。     

CORRELATION AS A DEPENDENT VARIABLE.

THE CORRELATION BETWEEN 2 DEPENDENT VARIABLES IS SUBJECT TO THE SAME EFFECTS AS ARE THE MEANS ON 1 VARIABLE. FOR EXAMPLE, THE CORRELATION BETWEEN THE 1ST AND LAST TRIALS MAY VARY WITH CONDITIONS OF PRACTICE, JUST AS THE TRIAL MEANS MAY. THE DEPENDENCE, MOREOVER, OF A CORRELATION UPON SOME EXPERIMENTAL CONDITIONS AND ITS INDEPENDENCE OF OTHERS MAY BE RELEVANT INFORMATION. IN THIS PAPER THE CHI SQUARE TEST FOR INDEPENDENT CORRELATIONS IS EXTENDED TO THE ANALYSIS OF CORRELATIONS, ACTUALLY THEIR Z TRANSFORMS, INTO MAIN, SUBSAMPLE, AND INTERACTION SOURCES OF VARIATION. CONSIDERATION IS GIVEN TO HANDLING AVERAGES OF CORRELATIONS BASED ON THE SAME SUBJECTS AND SAMPLES OF UNEQUAL SIZE. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

MAN AS AN INTUITIVE STATISTICIAN.

CONSIDERS EXPERIMENTAL RESEARCH THAT HAS USED PROBABILITY THEORY AND STATISTICS AS A FRAMEWORK WITHIN WHICH TO STUDY HUMAN STATISTICAL INFERENCE. EXPERIMENTS HAVE INVESTIGATED ESTIMATES OF PROPORTIONS, MEANS, VARIANCES, AND CORRELATIONS, BOTH OF SAMPLES AND OF POPULATIONS. IN SOME EXPERIMENTS, PARAMETERS OF POPULATIONS WERE STATIONARY; IN OTHERS, THE PARAMETERS CHANGED OVER TIME. THE EXPERIMENTS ALSO INVESTIGATED THE DETERMINATION OF SAMPLE SIZE AND TRIAL-BY-TRIAL PREDICTIONS OF EVENTS TO BE SAMPLED FROM A POPULATION. IN GENERAL, THE RESULTS INDICATE THAT PROBABILITY THEORY AND STATISTICS CAN BE USED AS THE BASIS FOR PSYCHOLOGICAL MODELS THAT INTEGRATE AND ACCOUNT FOR HUMAN PERFORMANCE IN A WIDE RANGE OF INFERENTIAL TASKS. (115 REF.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

硅石焦做还原剂冶炼硅锰合金

在９０００ｋＶＡ电炉中进行了分别用硅石焦和冶金焦做还原剂冶炼硅锰合金的试验，用硅石焦做还原剂，锰回收率由用冶金焦时的７３．５％提高到７６．５％，产品中锰含量由６４．５％提高到６７．２％，电耗平均降低１３５ｋＷｈ。硅石焦是冶炼硅锰合金的优良还原剂。     

SYSTEMATIC DESENSITIZATION AS A COUNTERCONDITIONING PROCESS.

SYSTEMATIC DESENSITIZATION, SHOWN TO REDUCE AVOIDANCE BEHAVIOR, ENTAILS THE CONTIGUOUS PAIRING OF AVERSIVE IMAGINAL STIMULI WITH ANXIETY COMPETING RELAXATION. IF THE EFFICIACY OF THE PROCEDURE DERIVES FROM A GENUINE COUNTERCONDITIONING PROCESS, A DISRUPTION OF THE PAIRING BETWEEN GRADED AVERSIVE STIMULI AND RELAXATION SHOULD MAKE IT INEFFECTIVE IN MODIFYING AVOIDANCE BEHAVIOR IN 28 FEMALE STUDENTS. THIS HYPOTHESIS WAS CONFIRMED: SIGNIFICANT REDUCTION IN AVOIDANCE BEHAVIOR WAS OBSERVED ONLY IN DESENSITIZATION SS, WITH NONE OCCURRING EITHER IN YOKED SS FOR WHOM RELAXATION WAS PAIRED WITH IRRELEVANT STIMULI OR IN YOKED SS WHO WERE GRADUALLY EXPOSED TO THE IMAGINAL AVERSIVE STIMULI WITHOUT RELAXATION. OTHER THEORETICAL ISSUES WERE RAISED, SUCH AS TRANSFER FROM IMAGINAL TO ACTUAL STIMULUS SITUATIONS. (44 REF.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

修旧利废和设备更新的技术经济分析和建议

对热轧生产线减少设备磨损和建立设备修理、更新进行了经济评价分析.通过设备实际的使用情况,提出行之有效的设备管理建议,从而可以提高设备管理的经济效益.     

贫瘦煤作高炉喷吹用煤的研究

随着高炉喷煤技术的发展,选择合适高炉喷吹用的煤源越来越重要,通过对煤的煤质分析、理化分析及燃烧性能的分析,比较了几种不同变质程度煤的可喷吹燃烧性能。     

冷却机废气热风烧结

利用环冷机低温段（２００℃左右）废气作为热风风源的热风烧结技术开发成功的，并在鞍钢新烧结１号烧结机生产中取得节能，优质，经济效益好的效果。本文介绍这项技术的特点和经济效益。