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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (4): 756-763    DOI: 10.3785/j.issn.1008-973X.2012.04.027
化学工程     
工业混煤煤粉中矿物质分布规律
郝娟, 张洪, 陈佳宝, 李亚男
中国矿业大学 化工学院,江苏 徐州 221116
Mineral distribution of industry blended coal powder
HAO Juan, ZHANG Hong, CHEN Jia-bao, LI Ya-nan
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
 全文: PDF 
摘要：

采集广西华宏（HH）、广西华润（HR）、江西万年青（WNQ）、山西威顿（WD）和安徽狄港（DG）5个新型干法水泥厂的工业混煤煤粉样品,通过工业分析、浮沉试验、粒度分析和煤岩成分分析,研究工业混煤煤粉中矿物质的分布规律.研究发现,各工业混煤煤粉样品都呈现出随着煤粉粒度增加灰质量分数降低的规律,其中HH、HR、WNQ和DG煤粉中煤和矿物质分化程度较高,WD混煤煤粉的分化程度较差.煤粉样品中整体呈现出高密度级煤样产率随着粒度增大而逐渐降低的趋势,随着粒度增加外在矿物逐渐减少,灰质量分数随粒度的变化主要是由高密度级煤样质量分数变化引起的.在测定的密度和粒度范围内,HH、HR、WNQ和WD煤粉的产率主要集中在高密度细粒级,而DG煤样低密度级的产率较高.
关键词： 混煤;  矿物质;  粒度分布    
Abstract:

The industry blended coal powders were sampled from Guangxi Huahong (HH), Guangxi Huarun (HR), Jiangxi Wannianqing (WNQ), Shanxi Weidun (WD) and Wuhu Digang (DG) new dry cement plants. The distribution rule of minerals in blended coal powders was analyzed with the methods of proximate analysis, float-sink, laser particle size analyzer and petrographic analysis. Results showed that the ash of all of the coal samples decreased with the increase of the particle size. The separation of coal and minerals was obvious in the blended powders, among which HH, HR, WNQ and DG coal samples showed the better grade effect, and WD coal sample was poor effect. In all coal samples higher density fractions decreased with the increase of the particle size, the content of external mineral decreased with increasing particle size, and the change of ash with particle size was mainly controlled by the mass fraction of higher density fraction. In the range of test density fraction and size fraction, the yield of fines was higher in the high density and fine size fractions of HH, HR, WNQ and WD coal samples, while the fines yield was higher in the low density fraction of DG coal samples.
Key words: blended coal    mineral matter    size distribution
出版日期: 2012-05-02
:  TQ 530  
基金资助:

国家自然科学基金委创新研究群体资助项目(50921003)；国家自然科学基金资助项目(50676103)；国家“十一五”科技支撑计划资助项目(2006BAF02A24).
通讯作者: 张洪,男,教授,博导.     E-mail: hzhang@cumt.edu.cn
作者简介: 郝娟(1976—),女,博士生,从事煤粉高效燃烧理论与技术研究. E-mail: hjcumt@126.com
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引用本文:

郝娟, 张洪, 陈佳宝, 李亚男. 工业混煤煤粉中矿物质分布规律[J]. J4, 2012, 46(4): 756-763.

HAO Juan, ZHANG Hong, CHEN Jia-bao, LI Ya-nan. Mineral distribution of industry blended coal powder. J4, 2012, 46(4): 756-763.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2012.04.027    或    http://www.zjujournals.com/xueshu/eng/CN/Y2012/V46/I4/756

［1］ 蒋超鹏.利用高灰分无烟煤生产高强硅酸盐水泥熟料的经验［J］.水泥,2008(7): 25-27.
JIANG Chaopeng. Experience of applying high ash content anthracite for high strength Portland cement production ［J］. Cement, 2008(7): 25-27.
［2］ 郑桂林,刘文兵.5000t/d预分解窑煅烧劣质煤的生产实践［J］. 水泥工程, 2005(2): 56-58.
ZHENG Guilin, LIU Wenbing. Production practice of burning low quality coal in 5000 t/d preheat kiln ［J］. Cement Engineering, 2005(2): 56-58.
［3］ QUEROL X, ALASTUEY A, JUAN R, et al. Determination of elemental affinities by density fractionation of bulk coal sample ［J］. Fuel, 2001, 80(1): 83-96.
［4］ SENIOR C L, ZENG T, CHE J, et al. Diatribution of trace elements in selected pulverized coals as a function of particle size and density ［J］. Fuel Processing Technology, 2000, 63(2/3): 215-241.
［5］ PUSZ S, KRZTON A, KOMRAUS J L, et al. Interactions between organic matter and mineral in two bituminous coals of different rank ［J］. International Journal of Coal Geology, 1997, 33(4): 369-386.
［6］ RUSSELL N V, MENDEZ L B, WIGLEY F, et al. Ash deposition of a Spannish anthracite: effects of included and excluded mineral matter ［J］. Fuel, 2002, 81(5): 657-663.
［7］ 蔡攸敏,姚洪,刘小伟,等.不同密度煤粉的矿物质分布与燃烧特性研究［J］.热能动力工程, 2007, 22(6): 651-655.
CAI Xiaomin, YAO Hong, LIU Xiaowei, et al. A study of the mineral distribution and combustion characteristics of pulverized coal of different densities ［J］. Journal of Engineering for Thermal Energy and Power, 2007, 22(6): 651-655.
［8］ 张洪,胡光洲,范佳鑫,等.矿物在煤粉中的分布规律研究［J］. 工程热物理学报,2008, 29(7): 1231-1235.
ZHANG Hong, HU Guangzhou, FAN Jiaxin, et al. Study on the distribution of minerals in pulverized coals ［J］. Journal of Engineering Thermophysics, 2008, 29(7): 1231-1235.
［9］ ZHANG Hong, MO Yanxue, SUN Ming, et al. Determination of the mineral distribution in pulverized coal using densitometry and laser particle sizing ［J］. Energy and Fuels, 2005, 19(6): 2254-2260.
［10］ 谢克昌. 煤的结构与反应性［M］. 北京: 科学出版社, 2002: 2-4.
［11］ 韩德馨. 中国煤岩学［M］. 徐州: 中国矿业大学出版社, 1996: 89-91.
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