|本期目录/Table of Contents|

[1]张若豪,邓敏,莫立武.煤矸石的表面活化对其微观结构和性能的影响[J].南京工业大学学报(自然科学版),2019,41(02):161-166.[doi:10.3969/j.issn.1671-7627.2019.02.005]
 ZHANG Ruohao,DENG Min,MO Liwu.Effects of surface activation on the microstructure and performance of coal gangue[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2019,41(02):161-166.[doi:10.3969/j.issn.1671-7627.2019.02.005]
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煤矸石的表面活化对其微观结构和性能的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
41
期数:
2019年02期
页码:
161-166
栏目:
出版日期:
2019-03-19

文章信息/Info

Title:
Effects of surface activation on the microstructure and performance of coal gangue
文章编号:
1671-7627(2019)02-0161-06
作者:
张若豪1邓敏12莫立武12
1.南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009; 2.江苏先进生物与化学制造协同创新中心,江苏 南京 210009
Author(s):
ZHANG Ruohao1DENG Min12MO Liwu12
1.State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing Tech University,Nanjing 210009,China; 2.Jiangsu National Synergetic Innovation Center for Advanced Materials,Nanjing 210009,China
关键词:
煤矸石 流态化煅烧 表面活化 水泥标准稠度用水量 凝结时间
Keywords:
coal gangue fluidized calcination surface activation water requirement of normal consistency of cement setting time
分类号:
TU528
DOI:
10.3969/j.issn.1671-7627.2019.02.005
文献标志码:
A
摘要:
采用流态化煅烧对煤矸石粉料进行表面活化处理,研究煅烧温度和保温时间对煤矸石中高岭石脱水反应程度、煤矸石比表面积和微观结构的影响,测定掺30%煅烧煤矸石水泥的标准稠度用水量和凝结时间。结果表明:650、700、750和800 ℃下分别流态化煅烧1、2.5和5 min时,煤矸石中高岭石分解率为3%~49.8%,高岭石未完全转化成偏高岭石; 30%表面活化煤矸石使水泥标准稠度用水量提高2.5%~5.5%,而30%完全活化煤矸石使水泥标准稠度用水量提高9.1%~16.4%。
Abstract:
The surface activation of coal gangue powder was carried out by fluidized calcination and the effects of calcination temperature and holding time on the mineral composition,the specific surface area and microstructure of surface-activated coal gangue were investigated.The water requirement of normal consistency and setting time of cements incorporated with 30% surface-activated coal gangue were measured.Results showed that kaolinite was completely converted into metakaolinite,and the decomposition of kaolinite was 3%-49.8% when coal gangue powder was heated in suspended air at 650,700,750 and 800 ℃ for 1,2.5 and 5 min.Compared with pure cement paste,the water requirement of normal consistencyof cement with 30% surface-activated and fully activated coal gangues was increased from 2.5% to 5.5% and 9.1% to 16.4%,respectively.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-12
基金项目:国家自然科学基金重点项目(51461135003); 国家重点研发计划(2016YFB0303601)
作者简介:张若豪(1992—),男,E-mail:1165188728@qq.com; 邓敏(联系人),教授,E-mail:dengmin@njtech.edu.cn.
引用本文:张若豪,邓敏,莫立武.煤矸石的表面活化对其微观结构和性能的影响[J].南京工业大学学报(自然科学版),2019,41(2):161-166..
更新日期/Last Update: 2019-03-31