共查询到20条相似文献,搜索用时 62 毫秒
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球团矿具有铁分高、粒度均匀。气孔率大、低温还原性能好等优点,炼铁原料中球团矿的配比也逐年增加,使高炉冶炼取得了综合能耗降低、利用系数提高的经济效果。竖炉焙烧球团矿投资少、热效率高、操作简便,尤其是导风墙——烘干床竖炉,使球团矿的产量、质量得到了提高。 相似文献
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Y O'Connor 《Canadian Metallurgical Quarterly》1993,106(1265):198-201
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CW Cole 《Canadian Metallurgical Quarterly》1997,349(9064):1490-1491
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M Rady 《Canadian Metallurgical Quarterly》1994,1(6):572-579
A focused review of the physiologic mechanisms of colloid and crystalloid fluid resuscitations for acute critical illness is presented. This review suggests that postresuscitation plasma volume, cardiac output, left ventricular mechanical performance, and global and microcirculatory O2 supplies are more favorable with colloid therapy. Conversely, crystalloid may adversely affect microcirculatory blood flow and resultant O2 supply and use by ischemic tissues in shock. Poor relief of global and regional hypoxia may persist in critically ill patients after resuscitation with crystalloid. 相似文献