共查询到20条相似文献,搜索用时 46 毫秒
1.
从筑炉材料的选择、筑炉工艺、炉衬烧结工艺、熔炼与日常维护保养方面对如何提高中频炉酸性炉衬寿命的工艺进行了研究,使炉衬的吨钢成本消耗大幅下降. 相似文献
2.
3.
本文通过介绍电炉炉衬的侵蚀机理、电炉炉衬材料、合理的炉衬烘烤烧结工艺以及良好的工艺操作等方面分析了影响炉衬寿命的主要因素,并简要地提出了提高电炉炉衬寿命的几项措施。 相似文献
4.
中频感应电炉熔炼时炉衬材料工作条件严酷,以往的筑炉工艺寿命较短,根据某公司多年来生产使用情况,选择合适的炉衬材料、炉衬的打结、烧结工艺来提高炉衬寿命。 相似文献
5.
6.
阐述了高铝矾土炉衬较高的耐火度、优良的热稳定性、较好的抗渣性、良好的抗蚀性、炉衬的致密化烧结.适用于多种有色金属,普通铸铁、球墨铸铁、及多种合金铸铁,碳钢、合金钢、不锈钢和耐热钢的熔炼.熔炼中金属合金元素烧损低,可超装一倍的金属炉料.炉衬采用低温烘烤、快速升温、高温短时间致密烧结的工艺措施.炉衬的使用寿命多在150炉次左右,最高可达200炉次. 相似文献
7.
8.
张湖滨 《金属材料与冶金工程》1988,(5)
长期以来,我厂电弧炉炉衬修砌后必须经过烘炉、洗炉,然后才能炼钢。这种传统的工艺方法虽然能较好地起到烧结炉衬和去除炉衬内的气体和水分,但却要耗费大量的 相似文献
9.
本文叙述了无云母板绝缘炉衬的试制过程和使用效果。着重介绍了有关炉衬绝缘层、石英砂粒度配比、硼酸加入量和烘烤烧结工艺的试验方法。 相似文献
10.
4.专利名称:一种双联热兑的电炉炉衬烘烤工艺
发明人:俞海明、段建勇、解英明、王瑞利、胡永胜
专利号:ZL201210029941.9
专利权人:新疆八一钢铁股份有限公司
专利内容简介:本发明提供了一种双联热兑的电炉炉衬烘烤工艺。依据烤捣打料的烧结机理,采用双联热兑的电炉炉衬烘烤技术,缩短了电炉炉衬烘时间,减少了新炉衬冶炼第一炉过程中的吹氧量,使得炉衬的烘烤效果更好,冶炼电耗降低了三分之一,降低了成本。 相似文献
11.
12.
13.
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。 相似文献
14.
K Ohta M Nishi M Ueda S Ohyama T Matsubara T Takahashi T Nakajima 《Canadian Metallurgical Quarterly》1998,99(9):589-594
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. 相似文献
15.
16.
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) 相似文献
17.
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. 相似文献
18.
TA Solokhina LS Shevchenko IuV Se?ku EG Rytik LV Besedina TS Veshchugina 《Canadian Metallurgical Quarterly》1998,98(6):42-46
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. 相似文献
19.