煤气化渣高水充填材料的制备及其性能研究

徐　阳; 徐再刚; 谢红飞; 李翠芹; 曹　阳; 陈前林

煤气化渣高水充填材料的制备及其性能研究

计量
- 文章访问数: 17
- HTML全文浏览量: 1
- PDF下载量: 0
出版历程
- 发布日期: 2020-09-19

Preparation and Properties of High Water Filling Material for Coal Gasification Slag

摘要

摘要: 为了解决地下煤气化燃空区的塌陷问题并减少地下煤气化渣中重金属镉的溶出,采用溶液聚合法,利用煤气化渣粉和硅烷偶联剂、甲基丙烯酰胺、甲叉双丙烯酰胺、三乙醇胺为原料制备煤气化渣高水充填材料并将其充填到地下煤气化渣中。通过XRD、SEM、FTIR对煤气化渣高水充填材料的物相、微观形貌和官能团进行研究并对相关机理进行分析。结果表明:当煤气化渣粉的添加量为4份时,高水充填材料的单轴抗压强度和残余强度分别可达0.57 MPa和0.41 MPa,35 d的收缩率为10.5%;将煤气化渣高水充填材料充填到地下煤气化渣中后,在pH=5的水环境中,充填体中镉离子浸出量减少70.1%。
- 煤气化渣 /
- 高水充填材料 /
- 抗压强度 /
- 收缩率 /
- 镉离子浸出量
Abstract: In order to solve the collapse problem of underground coal gasification and reduce the dissolution of heavy metal cadmium from underground coal gasification slag, the high water filling material of coal gasification slag was prepared by the solution polymerization method using coal gasification slag powder, silane coupling agent, methylacrylamide, methylbisacrylamide, and triethanolamine as raw materials. Then, the high water filling material of coal gasification slag was filled into the underground coal gasification slag. The phase, micromorphology, and functional groups of high water filling material for coal gasification slag were studied by XRD, SEM and FTIR. The results showed that when the amount of slag powder is 4 phr, the uniaxial compressive strength and residual strength of high water filling materials can reach 0.57 MPa and 0.41 MPa, respectively, and the shrinkage rate within 35　d is 10.5%. After filling high water filling material of gasification slag into underground gasification slag, the amount of cadmium ion leaching in the backfill decreases by 70.1% in the water environment with pH=5.
- coal gasification slag /
- high water filling material /
- compressive strength /
- shrinkage rate /
- cadmium ion leaching capacity

HTML全文

参考文献(28)

[1]	韩磊,秦勇,王作棠.煤炭地下气化炉选址的地质影响因素[J].煤田地质与勘探,2019,47(2):48-54.
[2]	唐朝苗,徐强,平立华.煤炭地下气化地质条件评价与开采技术探讨[J].中国煤炭地质,2018,30(S1):64.
[3]	刘淑琴,牛茂斐,齐凯丽.煤炭地下气化特征污染物迁移行为探测[J].煤炭学报,2018,43(9):256-262.
[4]	叶云娜.煤炭地下气化对地下水污染的研究[D].焦作:河南理工大学,2015:13-20.
[5]	曲江山,张建波,孙志刚,等.煤气化渣综合利用研究进展[J].洁净煤技术,2020,26(1):184-193.
[6]	孙文标,郭兵兵,罗传龙,等.煤气化废渣用作煤矿充填材料的试验研究[J].中国矿业,2017,26(2):166.
[7]	付晓晖.煤气化渣组成对高铬砖高温渗透行为研究[D].郑州:郑州大学,2019:4-5.
[8]	杭美艳,吕学涛,郭艳梅,等.煤气化渣微粉胶凝体系水化机理研究[J].混凝土与水泥制品,2019(2):94.
[9]	刘开平,赵红艳,李祖冲,等.煤气化渣对水泥混凝土性能的影响[J].建筑科学与工程学报,2017,34(5):191-192.
[10]	HORIGUCHI I, SHIRAI A, WATANABE M, et al. Fundamental Study on Concrete with Coal Gasification Slag[J]. Cement Science and Concrete Technology,2013, 66(1): 615-621.
[11]	POMYKALA R. The Mechnical Properties of Coal Gasification Slag as a Component of Concrete and Binding Mixture[J]. Polish Journal of Environmental Studies, 2014, 23(4): 1403-1406.
[12]	高旭霞,郭晓镭,龚欣.气流床煤气化渣的特征[J].华东理工大学学报(自然科学版),2009,35(5):677.
[13]	贺燕,成梓铭.聚丙烯-粉煤灰复合材料力学性能的研究[J].沈阳理工大学学报,2008,27(4):49-54.
[14]	罗振敏,葛岭梅,邓军,等.矿井密闭填充材料力学性能分析与稳定性预测[J].西安科技大学学报,2008,28(2):305-306.
[15]	董光林.矿井密闭墙新型填充材料研究[J].煤炭技术,2018,37(8):53-54.
[16]	Zhang L, Song F, Wu Y. A novel amino and carboxyl functionalized mesoporous silica as an efficient adsorbent for nickel(Ⅱ)[J]. Journal of Chemical & Engineering Data, 2019, 64(1): 176-188.
[17]	Peng H, Zhou M, Yu Z. Fractionation and characterization of hemicelluloses from young bamboo(Phyllostachyspubescens Mazel) leaves[J]. Carbohydrate Polymers, 2013, 95(1): 262-271.
[18]	麻鹏飞,张萍,蒋春东.氧化铝复合磨粒的制备及表征[J].中国陶瓷,2012,48(11):1-5.
[19]	倪爱清,朱坤坤,王继辉. 纳米SiO2-NaOH-有机硅烷偶联剂表面改性对苎麻纤维/乙烯基酯树脂复合材料性能的影响[J].复合材料学报,2019,36(11): 2579-2586.
[20]	邓芹英,刘岚,邓慧敏.波谱分析教程[M].北京:科学出版社,2007:63-65.
[21]	Sushil S, Batra V S. Modification of red mud by acid treatment and its application for CO removal[J]. Journal of Hazardous Materials, 2012, 203: 264-273.
[22]	单国荣,曹志海,黄志明,等.丙烯酰胺在聚乙二醇水溶液中的聚合动力学[J].高分子学报,2003(6):16-20.
[23]	陈雪萍,邹胜林,黄志明,等.过硫酸铵/脂肪胺引发丙烯酸钠的聚合动力学[J].化学反应工程与工艺,2004(3):54-57.
[24]	靳志森.硅烷偶联剂对玻纤/聚丙烯复合材料的影响[J].玻璃,2011(6):25-27.
[25]	李斌.硅烷偶联剂改性橡胶粉对固井水泥浆性能的影响[J].当代化工,2019,48(3):105-109.
[26]	冯波,刘长武,谢晖,等.粉煤灰改性高水材料力学性能实验研究及机理分析[J].工程科学学报,2018,40(10):1188-1189.
[27]	刘建忠,孙伟,缪昌文,等.矿物掺合料对低水胶比混凝土干缩和自收缩的影响[J].东南大学学报(自然科学版),2009,39(3):580-585.
[28]	杨帅,石立军.煤气化细渣组分分析及其综合利用探讨[J].煤化工,2013(4):29-31.

施引文献

资源附件(0)

计量

文章访问数: 17
HTML全文浏览量: 1
PDF下载量: 0
被引次数: 0

煤气化渣高水充填材料的制备及其性能研究

计量

出版历程

Preparation and Properties of High Water Filling Material for Coal Gasification Slag

计量

出版历程

目录