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Experiments of sink-float separation, magnetic separation and size grading were carried out based on analyses of those characteristics for improving the utilization rate and added value of the fly ash. As the experimental result indicated, cenospheres of 0.15% were separated by means of the water-medium sink-float separation first; then magnetic microspheres (with Fe2 O3 content of 44.65%) were available through the wet low-intensity magnetic (260 mT) separation; finally an air classification of the remaining non-magnetic microspheres was applied to obtain microspheres with six different size fraction: 89.6, 40.2, 21.3, 12.7, 8.1 and 4.9 μm. According to the above fine separation procedure, a variety of fly ash sphere products adapting to special application fields can be acquired, improving both the utilization rate and added economic value of Luohuang fly ash. Meanwhile, the environmental pressure caused by the fly ash will be relieved effectively., authors=LIU Huidong, SONG Hongjian, WEI Jianpeng, LIU Jingjing, LI Qingqian, authorsList=LIU Huidong, SONG Hongjian, WEI Jianpeng, LIU Jingjing, LI Qingqian, authorCompany=College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=jq9+GFcngFWR6Y4XSj4ReQ==, pdfFileSize=4424436, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242133121466970967, articleId=1242133118593868485, tenantId=1146029695717560320, journalId=1146031591421210625, 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科技导报
| 研究论文 2015, 33(4): 49-55
珞璜电厂粉煤灰微珠的精细化分选
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刘汇东, 宋红见, 魏建朋, 刘晶晶, 李青倩
作者信息
中国矿业大学(北京)地球科学与测绘工程学院, 北京100083
Experiments on fine separation of microspheres from fly ash of Luohuang coal-fired power plant
Affiliations
出版时间: 2015-02-28
doi: 10.3981/j.issn.1000-7857.2015.04.008
文章导航
针对华能集团重庆珞璜电厂煤粉炉粉煤灰的利用问题,采用XRF、XRD、Siroquant 定量、SEM-EDS 及光学显微镜等技术手段,在深入分析煤粉炉粉煤灰的岩石学、矿物学、元素地球化学特征的基础上,对此类粉煤灰的微珠进行浮沉、弱磁选和气流分级等精细化分选实验研究。结果显示,以水为介质的浮沉实验可获得质量分数0.15%的漂珠;磁场强度208×103 A/m 湿式弱磁选实验可获得质量分数14.8%、Fe2 O3 含量44.65%的磁珠;气力旋流分级实验可获得中值粒径分别为89.6、40.2、21.3、12.7、8.1、4.9 μm 共6 个粒度级的粉煤灰微珠产品,表明通过精细化分选获得的粉煤灰微珠产品能够适应多种领域的应用,显著提高此类粉煤灰的高值利用率。
煤粉炉粉煤灰
/
微珠
/
精细化分选
/
气流分级
The petrological, mineralogical and chemical characteristics of the fly ash from Luohuang coal-fired power plant of Huaneng Group in Chongqing, China were studied using XRF, XRD, Siroquant, SEM-EDS, and optical microscope. Experiments of sink-float separation, magnetic separation and size grading were carried out based on analyses of those characteristics for improving the utilization rate and added value of the fly ash. As the experimental result indicated, cenospheres of 0.15% were separated by means of the water-medium sink-float separation first; then magnetic microspheres (with Fe2 O3 content of 44.65%) were available through the wet low-intensity magnetic (260 mT) separation; finally an air classification of the remaining non-magnetic microspheres was applied to obtain microspheres with six different size fraction: 89.6, 40.2, 21.3, 12.7, 8.1 and 4.9 μm. According to the above fine separation procedure, a variety of fly ash sphere products adapting to special application fields can be acquired, improving both the utilization rate and added economic value of Luohuang fly ash. Meanwhile, the environmental pressure caused by the fly ash will be relieved effectively.
pulverized coal furnace fly ash
/
cenospheres
/
fine separation procedure
/
air classification
刘汇东, 宋红见, 魏建朋, 刘晶晶, 李青倩.
珞璜电厂粉煤灰微珠的精细化分选.
科技导报,
2015
, 33
(4)
: 49
-55
.
DOI: 10.3981/j.issn.1000-7857.2015.04.008
LIU Huidong, SONG Hongjian, WEI Jianpeng, LIU Jingjing, LI Qingqian.
Experiments on fine separation of microspheres from fly ash of Luohuang coal-fired power plant[J].
Science & Technology Review ,
2015
, 33
(4)
: 49
-55
.
DOI: 10.3981/j.issn.1000-7857.2015.04.008
2015年第33卷第4期
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文章信息
doi: 10.3981/j.issn.1000-7857.2015.04.008
接收时间：2014-10-28
首发时间：2015-03-19
出版时间：2015-02-28
收稿日期：2014-10-28
修回日期：2015-01-05
https://castjournals.cast.org.cn/joweb/kjdb/CN/10.3981/j.issn.1000-7857.2015.04.008
引用本文
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2种不同金属材料的力学参数
科 属数 种数 占总种数比例 属 种数 占总种数比例 鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78 小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39 多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39 红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87 小菇属 Mycena 11 5.26 光柄菇属 Pluteus 5 2.39 红菇属 Russula 17 8.13 栓菌属 Trametes 5 2.39
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