澳斯麦特炉锡精矿还原熔炼过程的渣化学

通过对澳斯麦特炉锡熔炼特点的分析和同反射炉熔炼的对比，结合生产实践经验，并汇总相关资料，以FeO—SiO2--CaO三元系炉渣为基础，分析归纳了常见炉渣成分对炉渣性质和熔炼过程的影响，为澳斯麦特炉锡熔炼过程的渣型选择提供启示。     

最新消息

Z0 2 0 0 1 3　中国首座澳斯麦特炼锡炉在个旧建成投产经过一年多的建设 ,引进澳大利亚澳斯麦特关键技术、由中国有色工程设计研究总院设计的云南锡业集团公司澳斯麦特炼锡炉 ,于 5月 1 2日顺利通过 72 h指标测试 ,各项技术指标均达到或超过设计水平。澳斯麦特熔炼炉是当今世界最先进的冶金炉之一 ,具有熔炼效率高、占地面积小、不污染环境、易于自动控制等特点。新建成的澳斯麦特炼锡炉 ,可取代云锡冶炼厂原来的 1 0台反射炉、3台电炉和 2台鼓风炉 ;与反射炉等传统炼锡设备相比 ,澳斯麦特炼锡炉所产粗锡含锡量增加 1 2 % ,炉渣含锡量下降5…     

反射炉和澳斯麦特炉粗锡还原熔炼直接回收率的分析与比较

通过对云南锡业股份有限公司冶炼分公司反射炉与澳斯麦特炉粗锡还原熔炼直接回收率等技术指标分析和比较,对两种熔炼技术进行了评价。     

反射炉和澳斯麦特炉粗锡还原熔炼直接回收率的分析与比较

通过对云南锡业股份有限公司冶炼分佘司反射炉与澳斯麦特炉粗锡还原熔炼直接回收率等技术指标分析和比较。对两种熔炼技术进行了评价。     

信息动态

澳斯麦特余热发电技术领先云锡股份冶炼分公司针对引进的澳斯麦特技术在生产中的不足,大胆采用新技术———澳斯麦特炉放渣期余热锅炉补热燃烧装置,成功地利用澳斯麦特余热进行发电,取得良好的经济和社会效益,有效地提升了云锡集团在国内外的知名度。在澳斯麦特炉熔炼和放渣过程中,烟气温度和烟气带走大量热量,原设计中没有配置余热锅炉,使得该部分热量直接排空,造成很大的资源浪费。为此,在澳斯麦特炉后配置余热锅炉,利用澳斯麦特炉产出的中压过热蒸汽,推动6000kW汽轮发电机组发电。为解决因澳斯麦特熔炼工艺的周期性导致在放渣和放锡过程…     

降低澳斯麦特炉系统烟道结焦的生产实践

澳斯麦特炉上升烟道的结焦来源主要有澳斯麦特炉喷枪生产过程中高温熔体喷溅,烟气的机械夹带,金属、硫化物、氧化物的挥发等。本文从降低澳斯麦特炉上升烟道结焦来源和结焦处理两个方面总结出了一套澳斯麦特炉铜冶炼熔炼过程降低烟道结焦的控制办法。     

我国首座澳斯麦特炼锡炉在个旧建成投产

经过一年多的建设 ,引进澳大利亚澳斯麦特关键技术、由中国有色工程设计研究总院设计的云南锡业集团公司澳斯麦特炼锡炉 ,于 2 0 0 2年 5月 12日顺利通过 72ｈ指标测试 ,各项技术指标均达到或超过设计水平 ,被权威专家赞誉为“世界范围内试车情况最好、建设速度最快、试车时间最短的澳斯麦特炉”。是利用引进、吸收世界先进技术改造传统产业的一项重大成果。澳斯麦特熔炼炉为当今世界最先进的冶金炉之一 ,具有熔炼效率高、占地面积小、不污染环境、易于自动控制等特点。在云锡澳斯麦特炼锡炉设计及建设中 ,根据云锡的资源特点和工厂布局 ,在…     

块煤对澳斯麦特炉熔炼过程的影响

分析了澳斯麦特熔炼过程中,加入块煤对炉温、冰铜品位和炉渣性质的影响,指出用块煤替代粉煤在实际操作中应注意的问题。     

块煤对澳斯麦特炉熔炼过程的影响

分析了澳斯麦特熔炼过程中，加入块煤对炉温、冰铜品位和炉渣性质的影响。指出用块煤替代粉煤在实际操作中应注意的问题。     

澳斯麦特炉提高冰镍品位的措施和方法

概述了镍冶金现状、澳斯麦特炉熔炼工作原理和造锍过程主要化学反应。在此基础上,针对吉林吉恩镍业股份公司冶炼厂提高冰镍品位的措施和方法,对冶炼厂澳斯麦特炉每小时的加料量、熔炼系数和过剩风系数的提高、富氧浓度的变化及其澳炉渣中Fe_3O_4变化进行研究,结果表明,稳定的加料量及提高熔炼系数,电炉低冰镍的品位从原来的23%提高到了32%;增加富氧浓度以及提高过剩风系数,Fe_3O_4从原来的2%~3%提高到了5%~6%,以及提高温度都能有效的提高冰镍品位。     

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。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

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。     

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.