铁尾矿的机械力化学活化及制备高强结构材料.pdf

32 4 Vo.l 32 No. 4 2010 4 Journal ofUniversity of Science and Technology Beijing pr. 2010 1) 1) 2) 1) 1) 郑永超 倪 文 徐 丽 李德忠 杨菁华 1) , 100083 2) , 102401 , , X ( XRD ) ( SEM )( IR) . 89MPa 70% . ; ; ; TB 321; X 756 Mechanochem ical activation of iron ore tailings andpreparation of highstrength constructionmaterials 1) 1) 2) 1) 1) ZHENG Yongchao , NI Wen , XU Li , LI D ezhong , YANG Jinghua 1) K ey La oratory of the M inistry of Education of China forH ighEfficientM ining and Safety ofM etalM ines, U niversity of Science and Techno logy Bei jing, Beijing 100083, China 2) China Electric Pow er Research Institute, Beijing 102401, China BSTR CT M iyun iron ore tailings in Beijing w ere activated y a mechanochem ical m ethod. The influence of m echanochem ical effect on the activation of the iron ore tailingswas analyzed y m eans of grain size analysis, Xray diffraction (XRD), scanning elec tron m icroscope ( SEM ) and infrared rad iation ( IR) technologies. The iron ore tailings as raw m aterialsw ere used to produce h igh strength construction m aterials. It is shown that the com pressive strength of the produced construction m aterials in wh ich the overall content of the iron ore tailings is 70% can reach up to 89M Pa. KEY WORDS iron ore tailing; m echanochem istry; reaction activation; construction m aterials [ 5] , , . , 28d 634MPa [ 1] 26 . . , , ,