摘要
以内蒙古中部某地区的煤矸石和铁尾矿为主要原料,页岩作为黏结剂制备不同规格的煤矸石—铁尾矿烧结砖。采用正交实验研究煤矸石掺量、铁尾矿掺量、烧结温度和烧结时间对烧结砖抗压强度和吸水率的影响,利用极差分析和方差分析方法对烧结砖性能影响因素进行分析并拟合了强度关系模型。结果表明,优化后不同规格的烧结砖抗压强度分别提升了1~3 MPa,吸水率分别降低1%~6%,极差分析与方差分析显示结果一致,强度关系模型回归效果显著,煤矸石浸出毒性与腐蚀性检验均满足要求,m(煤矸石):m(铁尾矿):m(页岩)=7:8:5,烧结温度850℃、烧结时间7 h为优化后的工艺参数。
Using coal gangue and iron tailings from a certain area in the middle of Inner Mongolia as the main raw materials and shale as the binder,different specifications of coal gangue and iron tailings fired bricks were prepared.The Effect of coal gangue content,iron tailings content,sintering temperature and sintering time on the compressive strength and water absorption of sintered brick was studied by orthogonal tests.The factors affecting the performance of sintered brick were analyzed by range analysis and variance analysis,and the strength relationship model was fitted.The results show that after optimization,the compressive strength of sintered bricks of different specifications has been increased by 1~3 MPa,and the water absorption has been reduced by 1%~6%.The results of range analysis and variance analysis are consistent.The regression effect of the strength relationship model is significant.The test of leaching toxicity and corrosivity of coal gangue meets the requirements.m(coal gangue):m(iron tailings):m(shale)=7:8:5,sintering temperature 850℃,and sintering time 7 h are the theoretical parameters after optimization.
作者
郝贠洪
王韫辉
李京
薛晨光
何晓雁
HAO Yunhong;WANG Yunhui;LI Jing;XUE Chenguang;HE Xiaoyan(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot,Inner Mongolia 010051,China;Key Laboratory of Civil Engineering Structure and Mechanics of Inner Mongolia Autonomous Region,Hohhot,Inner Mongolia 010051,China;Engineering Technology Research Center for Building Inspection,Appraisal and Safety Assessment of Inner Mongolia Autonomous Region,Hohhot,Inner Mongolia 010051,China;Tongfu Building Materials Co.,Ltd.,Chayouqian Banner,Ulanqab,Inner Mongolia 012212,China)
出处
《矿产综合利用》
2025年第6期192-198,206,共8页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金项目(12272190)
中央引导地方科技发展资金项目(2022ZY0189)
内蒙古自治区科技计划项目(关键技术攻关项目)(2020GG0014)
内蒙古自治区草原英才项目(107-841025)。
关键词
烧结砖
煤矸石
铁尾矿
正交实验
关系模型
sintered brick
coal gangue
iron tailings
orthogonal test
relational model
