工程科学学报，第37卷，第12期：1535-1541,2015年12月 Chinese Journal of Engineering,Vol.37,No.12:1535-1541,December 2015 D0l:10.13374/j.issn2095-9389.2015.12.001:http://journals..ustb.edu.cn 基于X射线衍射实验的堆垛结构对煤尘润湿性的影响 周 刚23》，薛娇”，程卫民”，聂文”四，王 果” 1)山东科技大学矿山灾害预防控制省部共建国家重点实验室培有基地，青岛266590 2)安徽理工大学煤矿安全高效开采省部共建教有部重点实验室，准南232001 3)澳大利亚联邦科学与工业研究组织能源研究分院，布里斯班4069，澳大利亚 ☒通信作者，E-mail:skdniewen@163.com 摘要为了研究煤尘堆垛结构对其润湿性的影响，对从全国选取的10种不同变质程度煤样进行X射线衍射实验，结合液一 固界面动态接触角测定结果，分析得到煤尘微晶参数与其润湿性之间的关系.结果表明，无机矿物种类随着煤样变质程度的 提高逐步减少，且原生矿物种类数量越多，润湿性则越好，次生矿物对煤尘润湿性的影响则较小.变质程度高的煤种晶态成 分较多，芳晶结构单元较大，芳香环缩合度较高：而中低变质程度煤种的非晶态成分较多，往往是一些亲水性的烷基小分子侧 链、含氧官能团等.随着堆砌度和延展度不断升高，面网间距逐渐减小，煤尘润湿性逐步变差.当煤尘X射线衍射的堆砌度为 18.5nm,延展度为41.7nm,面网间距为0.898nm时，煤尘润湿性最佳，其X射线衍射微晶参数越接近上述组合，润湿性越好. 关键词采煤：煤尘：润湿性：X射线衍射：微晶参数 分类号TD714 Effect of stacking structure on the wettability of coal dust based on X-ray diffraction experiment ZHOU Gang2,,XUE Jiao”,CHENG Wei--min》,NIE Wen)a,WANG Hao》 1)State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shan- dong University of Science and Technology,Qingdao 266590,China 2)Key Laboratory of Safety and High-efficiency Coal Mining of the Ministry of Education,Anhui University of Science and Technology,Huainan 232001,China 3)Energy Flagship,Commonwealth Scientific and Industrial Research Organization,Brisbane 4069,Australia Corresponding author,E-mail:skdniewen@163.com ABSTRACT To investigate the effect of stacking structure on the wettability of coal dust,ten selected coal samples from China's different regions with different metamorphic grades were analyzed by X-ray diffraction.In combination with the dynamic contact angle determination results of the liquid-solid interface,the relationship between microcrystalline parameters and the wettability of coal dust was deduced.The results show that the inorganic mineral types gradually decrease with increasing metamorphic grade,and the more the primary mineral types are,the better the wettability of coal dust is,but the secondary minerals have no significant influence on the wettability of coal dust.For different coal types,the higher the metamorphic grade of coal is,the more the crystalline component is, the bigger the structural unit of aromatic microcrystals is,and the higher the aromatic ring condensation degree will be.While the coals with low-medium metamorphic grades have more amorphous components,which include hydrophilic alkyl side chains of small mole- cules,oxygen-containing functional groups,etc.With increasing stack degree and spread degree,the plane spacing decreases gradual- 收稿日期：201406-17 基金项目：国家自然科学基金资助项目(U1261205,51474139,51204103):中国博士后科学基金资助项目(2015M570602):山东科技大学杰出 青年科技人才支持计划资助项目(2014JQH106):山东煤炭安全高效开采技术与装备协同创新中心资助项目：煤矿安全高效开采省部共建教 有部重点实验室开放研究基金资助项目(JYBSYS2014105):2014年度青岛市黄岛区科技资助项目(2014-1-30)工程科学学报，第 37 卷，第 12 期: 1535--1541，2015 年 12 月 Chinese Journal of Engineering，Vol． 37，No． 12: 1535--1541，December 2015 DOI: 10． 13374 /j． issn2095--9389． 2015． 12． 001; http: / /journals． ustb． edu． cn 基于 X 射线衍射实验的堆垛结构对煤尘润湿性的影响 周 刚1，2，3) ，薛 娇1) ，程卫民1) ，聂 文1) ，王 昊1) 1) 山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地，青岛 266590 2) 安徽理工大学煤矿安全高效开采省部共建教育部重点实验室，淮南 232001 3) 澳大利亚联邦科学与工业研究组织能源研究分院，布里斯班 4069，澳大利亚  通信作者，E-mail: skdniewen@ 163． com 摘 要 为了研究煤尘堆垛结构对其润湿性的影响，对从全国选取的 10 种不同变质程度煤样进行 X 射线衍射实验，结合液-- 固界面动态接触角测定结果，分析得到煤尘微晶参数与其润湿性之间的关系． 结果表明，无机矿物种类随着煤样变质程度的 提高逐步减少，且原生矿物种类数量越多，润湿性则越好，次生矿物对煤尘润湿性的影响则较小． 变质程度高的煤种晶态成 分较多，芳晶结构单元较大，芳香环缩合度较高; 而中低变质程度煤种的非晶态成分较多，往往是一些亲水性的烷基小分子侧 链、含氧官能团等． 随着堆砌度和延展度不断升高，面网间距逐渐减小，煤尘润湿性逐步变差． 当煤尘 X 射线衍射的堆砌度为 18. 5 nm，延展度为 41. 7 nm，面网间距为 0. 898 nm 时，煤尘润湿性最佳，其 X 射线衍射微晶参数越接近上述组合，润湿性越好． 关键词 采煤; 煤尘; 润湿性; X 射线衍射; 微晶参数 分类号 TD714 收稿日期: 2014--06--17 基金项目: 国家自然科学基金资助项目( U1261205，51474139，51204103) ; 中国博士后科学基金资助项目( 2015M570602) ; 山东科技大学杰出 青年科技人才支持计划资助项目( 2014JQJH106) ; 山东煤炭安全高效开采技术与装备协同创新中心资助项目; 煤矿安全高效开采省部共建教 育部重点实验室开放研究基金资助项目( JYBSYS2014105) ; 2014 年度青岛市黄岛区科技资助项目( 2014--1--30) Effect of stacking structure on the wettability of coal dust based on X-ray diffraction experiment ZHOU Gang1，2，3) ，XUE Jiao1) ，CHENG Wei-min1) ，NIE Wen1)  ，WANG Hao1) 1) State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology，Shan￾dong University of Science and Technology，Qingdao 266590，China 2) Key Laboratory of Safety and High-efficiency Coal Mining of the Ministry of Education，Anhui University of Science and Technology，Huainan 232001，China 3) Energy Flagship，Commonwealth Scientific and Industrial Ｒesearch Organization，Brisbane 4069，Australia  Corresponding author，E-mail: skdniewen@ 163． com ABSTＲACT To investigate the effect of stacking structure on the wettability of coal dust，ten selected coal samples from China’s different regions with different metamorphic grades were analyzed by X-ray diffraction． In combination with the dynamic contact angle determination results of the liquid--solid interface，the relationship between microcrystalline parameters and the wettability of coal dust was deduced． The results show that the inorganic mineral types gradually decrease with increasing metamorphic grade，and the more the primary mineral types are，the better the wettability of coal dust is，but the secondary minerals have no significant influence on the wettability of coal dust． For different coal types，the higher the metamorphic grade of coal is，the more the crystalline component is， the bigger the structural unit of aromatic microcrystals is，and the higher the aromatic ring condensation degree will be． While the coals with low-medium metamorphic grades have more amorphous components，which include hydrophilic alkyl side chains of small mole￾cules，oxygen-containing functional groups，etc． With increasing stack degree and spread degree，the plane spacing decreases gradual-