延长挥发窑内衬砖使用寿命实践

介绍了挥发窑处理锌浸出渣时,反应带改用镁铬铝砖的试验及使用该砖种挥发窑连续运行了２４４ｄ达到国内同行业领先水平的实践情况。     

锌浸出渣挥发窑技术改进浅析

详尽地论述了锌浸了渣挥发窑在生产能力、机械部分、窑内衬砖，以及因气收尖等方面的技术改进，其改进的内容代表着国内先进水平，逐步实现挥发窑生产向大型化和现代化发展。     

镁铝铬复合尖晶石砖挂渣性研究

研究了挥发窑用镁铝铬复合尖晶石砖的抗渣性,探讨了窑料的高温熔融性以及挂渣性。研究发现:1 400℃时镁铝铬复合尖晶石砖的抗渣侵蚀能力较差,而1 250℃时较好;适当调整浸出渣铝、硅、铁等的含量,可提高砖的挂渣性;高铁出窑渣可取代铁屑作为添加剂,实现资源再利用并降低成本。本研究为提升挥发窑挂渣保护提供参考。     

锌浸出渣挥发窑内衬砖的选择和实践

分析总结了葫芦岛锌厂锌浸出渣挥发窑内衬砖损坏机理及原因 ,提出了内衬砖的选用原则 ,并对普通烧结镁砖、直接结合镁铬砖、铝铬砖、镁铬铝砖等几种常用内衬砖的性能指标及实际应用情况进行了对比 ,介绍了镁铬铝砖实际应用情况     

锌浸出渣挥发窑内衬砖的选择和实践

分析总结了葫芦岛锌厂浸出渣挥发窑内衬砖损坏机理及原因,提出了内衬砖的选用原则,并对普通烧结镁砖、直接结合镁砖、铝铬砖、镁铬铝砖等几种常用内衬砖的性能指标及实际应用情况进行了对比,介绍了镁铬铝砖实际应用情况。     

特种镁铝铬复合尖晶石砖的研制及应用

采用镁铝铬复合尖晶石及电熔镁砂为主要原料,加入特殊添加剂生产而成的特种镁铝铬复合尖晶石砖,具有抗侵蚀、耐磨损、抗剥落、与锌浸出渣亲和能力强等特性.经云南蒙自矿冶铟锌厂Φ4.15×58 m大型锌挥发窑反应带应用,寿命达到319 d,取得了目前国内大型锌挥发窑的最长应用周期.     

锌浸出渣挥发锌铅铟试验研究

回转窑挥发法是处理锌浸出渣的成熟工艺,针对某湿法炼锌浸出渣开展还原挥发锌、铅、铟试验研究。结果表明,锌浸渣中的物相主要为铁酸锌,在煤配比30%、挥发温度1 150 ℃、挥发1 h的条件下,锌、铅和铟的挥发率分别为99.92%、99.59和83.46%,窑渣含锌、铅和铟分别为0.025%、0.027%和0.013%。窑渣磁选回收铁,再浮选回收碳、铜和银,尾渣可以作为水泥和砖等建材原料。     

华锡来冶公司利用残焦节支809万元

2010年,华锡集团来冶公司加大了对铟挥发窑残焦进行回收利用的力度,其中铟挥发窑渣分选及露天煤场铟挥发窑用焦配煤项目得到了切实有效的开展。该项目主要是将铟挥发窑产出渣中的焦炭分选出来,     

对延长锌浸出渣挥发窑寿命的探讨

介绍了电解锌浸出渣在挥发窑处理过程中对窑使用寿命的影响因素及延长挥发窑寿命的探讨,着重介绍了耐火材料对挥发窑寿命的影响,根据生产实践情况来看,铝镁铬耐火砖在挥发窑上的应用效果最好,并取得很好的经济效益。     

锌浸出渣挥发窑低空污染原因分析及治理

文章介绍了锌浸出渣挥发窑的基本原理,结合一系统挥发窑改进,分析了挥发窑低空污染产生的原因,提出合适的治理方案。     

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.     

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.     

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)