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Mechanochemical activation of iron ore tailings and preparation of high-strength construction materials

ZHENG Yong-chao1),NI Wen1),XU Li2),LI De-zhong1),YANG Jing-hua1)1)Key Laboratory of the Ministry of Education of China for High-Efficient Mining and Safety of Metal Mines,University of Science and Technology Beijing,Beijing 100083,China2)China Electric Power Research Institute,Beijing 102401,China  
Miyun iron ore tailings in Beijing were activated by a mechanochemical method.The influence of mechanochemical effect on the activation of the iron ore tailings was analyzed by means of grain size analysis,X-ray diffraction(XRD),scanning electron microscope(SEM)and infrared radiation(IR)technologies.The iron ore tailings as raw materials were used to produce high-strength construction materials.It is shown that the compressive strength of the produced construction materials in which the overall content of the iron ore tailings is 70% can reach up to 89 MPa.
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