排序方式: 共有18条查询结果,搜索用时 0 毫秒
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采用三步分离法,其中第一步用水,第二步用乙酸铵,第三步用盐酸,提取纸浆发电厂生物质飞灰和底灰的组分,以评估这些残渣的浸出行为。除了Mo、S、Na以及那些浓度低于检测范围的元素外,在这两种灰份中,对于其他元素这三种浸出剂的浸出能力从弱到强的顺序为:水、乙酸铵和盐酸。采用三步分离法处理的废渣中元素浓度比前期用BCR连续提取法得到的低。 相似文献
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综合利用扫描电镜能谱分析、X-射线衍射仪等先进仪器对SZ36-1油田滤膜组分燃烧前后进行综合分析研究。通过分析无机组分中Fe、Ca等元素的变化规律,并结合现场水质监测数据,研究发现SZ36-1油田回注污水由CEP向AJ、平台输送过程中水质逐级恶化;同时污水由CEP到A平台再到J平台过程中,Fe原子百分比平均值依次为4.45%、13.03%、19.45%,Ca原子百分比平均值依次为4.33%、5.43%、5.66%。腐蚀、结垢现象逐渐加剧,是导致注水水质恶化的主要原因。 相似文献
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杨建潇摄影 《有色金属再生与利用》2008,(3):77-77
凤凰是再生的象征,那美丽的形态被赋予了极其深邃的涵义,似乎生命轮回成为一种值古的美丽,每经历五百年,凤凰要自焚一回,它要烧掉它衰老的和瘦弱的外形,于是一只崭新的,朝气蓬勃的和脱胎换骨的凤凰就从灰烬中飞出。 相似文献
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妖娆的旗袍、逼仄的弄堂、咿呀绵软的吴语,遥远年代的老歌、身份含糊的人、晦涩纠缠的情感……时光的褶皱被一一抚平,遥远时代消逝的流年勾勒出时间灰烬里的上海往事。 相似文献
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The effect of removing pyrite and ash from fine coal with electrostatic separator is determined by the electric property of coal, the distribution of corona ion and electrostatic field, and the disperse and even feed. The dielectric constant of coal and mineral matter is studied in this paper and the amendment has been made to survey theory. The oscillogram is adopted to study the distribution of corona ion and electrostatic field. The paper details the study of remoing pyrite and ash from fine coal, and the test results demonstrate the high efficiency of removing pyrite and ash with electrostatic separator. 相似文献
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LI Han-xu Yoshihiko Ninomiya DONG Zhong-bing ZHANG Ming-xu 《中国矿业大学学报(英文版)》2006,16(2):162-166
By using the advanced instrumentation of a Computer Controlled Scanning Electron Microscope (CCSEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF), the ash composition and the mineral components of six typical Huainan coals of different origins were studied. The transformation of mineral matter at high temperatures was tracked by XRD in reducing conditions. The quartz phase decreased sharply and the anorthite content tended to increase at first and then decreased with increasing temperatures. The formed mullite phase reached a maximum at 1250 ℃ but showed a tendency of slow decline when the temperature was over 1250 ℃. The mullite formed in the heating process was the main reason of the high ash melting temperature of Huainan coals. Differences in peak intensity of mullite and anorthite reflected differences in phase concentration of the quenched slag fractions, which contributed to the differences in ash melting temperatures. The differences in the location of an mnorphous hump maximum indicated differences of glass types which may affect ash melting temperatures. For Huainan coal samples with relatively high ash melting tempera- tures, the intensity of the diffraction lines for mullite under reducing condition is high while for the samples with relatively low ash melting temperature the intensity for anorthite is high. 相似文献
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