提高立式叶滤机设备整体效率的实践

拜耳法工艺生产氧化铝过程中,从分离沉降槽溢流的粗液中往往残留着微量的浮游物,如果不清除这些浮游物,那么在分解工序中这些浮游物作为氢氧化铝的晶核而进入产品氧化铝中,影响产品质量。铝酸钠溶液的粗液精制控制过滤设备一般采用凯利卧式叶滤机、高效立式叶滤机及一部分传统的袋滤机,各种过滤设备在精液精制系统中表现出了不同的应用技术特点。本文全面分析了立式叶滤机的运行机理特点和效益,利用OEE工具对立式叶滤机影响因素进行分析,并提出改进措施,改进后设备的OEE提高315.49%。     

国内首台高气压环形潜孔钻机井下试验成功

2007年8月13日，具有自主知识产权的先进创新技术装备——新型高效铝酸钠溶液精滤机在中国铝业股份有限公司贵州分公司氧化铝厂经过一次试车，连续稳定运行1个月，完全取代了旧流程中的20台凯利式双筒叶滤机，每年可为企业节能增效840万元。     

双筒凯利叶滤机的改进

对双筒凯利叶滤机在生产实际操作中存在的问题进行分析,并提出改进措施,叶滤机通过能力由45m3/筒·h提高到55m3/筒·h,减少了同样生产条件下叶滤机的台数和滤布消耗。     

385m~2叶滤机消化研制成功使用效果显著

３８５ｍ~２叶滤机消化研制成功使用效果显著山东铝业公司、沈阳铝镁设计研究院、山西铝厂联合消化研制的３８５ｍ２叶滤机，其技术难点是：关键部件快开式锁紧机构设计方法的研究；超细长液压油缸的制造技术；电气控制和液压元件的选择及组合设计；主要零部件滤片、密封?..     

浅谈双筒凯利叶滤机的改进

凯利叶滤机滤片出料由原来的四周夹缝出料改为夹层出料,过滤面积也相应增加;通过增加碱洗泵提高碱液流量,增设蒸汽加热措施提高碱液温度。经实施,叶滤机通过能力由45m3/(筒·h)提高到55m3/(筒·h),降低滤布消耗,为正常生产和大液量通过创造了条件。     

立式叶滤机在铝酸钠粗液过滤工序的应用

介绍了立式叶滤机在铝酸钠粗液过滤工序的应用,分析了该设备的工作特点、效能及发展方向。与传统凯利叶滤机比较,立式叶滤机对氧化铝厂设备大型化、自动化以及生产的节能降耗有着普遍的应用意义。     

90m2叶滤机的改进设计与应用

阐述叶滤机的工作原理、设计思路、制作要求及质量控制,分析原设备在生产中存在的问题,并结合现场生产实际及车间对设备密封性能、滤片结构等要求,对叶滤机进行优化设计,满足了生产要求.     

阿希金矿采空区对地表构筑物影响分析及监测方案研究

针对阿希金矿开采技术条件及采空区分布情况,就1 385 m中段以上采空区对地表影响进行了数值模拟分析,发现在地表形成位移约为1 cm的影响区域,其东西范围约120 m,南北范围约400 m,主要集中在南北露天坑之间。地表岩移监测采用静力水准仪、拉线式位移计、全站仪三种手段对岩移范围进行监测,目前,该监测系统已进入建设实施阶段。     

袋滤机在氧化铝生产中的应用

本主要介绍了袋滤机的工作原理、技术特点和回收立盘母液中氢氧化铝浮游物的应用效果，提出袋滤机在氧化铝生产中的应用前景，对同行业生产有一定的指导意义。     

分离一次脱硅硅渣的絮凝剂选型及对沉降槽产能,叶滤机作业带来的影响

本文介绍了通过针对我厂即将实施的脱硅新工艺而进行的实验结果 ,分析了分离一次脱硅硅渣使用的絮凝剂选型及对沉降槽产能、叶滤机作业带来的影响。     

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.     

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.     

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。