SeriesNo.560February2023金属矿山METALMINE总第560期2023年第2期收稿日期2022-04-28基金项目辽宁省教育厅基金项目(编号:2020LNQN13);兴辽英才科技创新领军人才项目(编号:XLYC2002028)。作者简介毛永伟(1997—),男,硕士研究生。通信作者李钊(1991—),男,副教授,博士,硕士研究生导师。干法超细研磨中黑滑石的机械力化学效应毛永伟孙铭霏李钊代淑娟郭小飞赵通林(辽宁科技大学矿业工程学院,辽宁鞍山114051)摘要为揭示机械力化学作用对黑滑石晶体结构、微观形貌和理化性质的影响,指导其矿物综合利用,以江西广丰某黑滑石纯矿物为原料,通过XRD、FTIR、SEM、TG、BET等表征技术,系统地研究了干法超细研磨中黑滑石的机械力化学效应。超细研磨会破坏黑滑石矿物的晶体结构,引发晶格畸变,Mg2+和OH-可以从固相脱出成为自由离子。矿物颗粒棱角消失、形状趋于统一,比表面积下降,但当研磨作用过大时颗粒会发生二次聚团。研磨过程中,黑滑石表面官能团振动特性发生变化,红外吸收峰出现移动。由于粉体内能的累积,黑滑石的热分解效率也会明显提升,在较低温度下就可脱除结构羟基。在合理的强度范围内,机械力化学作用可有效增强黑滑石的界面反应活性。关键词黑滑石机械力化学超细研磨晶体结构中图分类号TD989文献标志码A文章编号1001-1250(2023)-02-107-07DOI10.19614/j.cnki.jsks.202302015MechanochemicalEffectsofBlackTalcinDrySuperfineGrindingMAOYongweiSUNMingfeiLIZhaoDAIShujuanGUOXiaofeiZHAOTonglin(SchoolofMiningEngineering,UniversityofScienceandTechnologyLiaoning,Anshan114051,China)AbstractInordertorevealtheeffectofmechanochemicalactiononthecrystalstructure,micromorphologyandphysico-chemicalpropertiesofblacktalc,andtoguideitscomprehensiveutilization,themechanochemicaleffectsofpureblacktalcfromGuangfengbysuperfinedrygrindingwassystematicallystudiedbyXRD,FTIR,SEM,TGandBETcharacterizationtech-niques.Thesuperfinegrindingwoulddestroythecrystalstructureofblacktalcandcausethelatticedistortion,whiletheMg2+andOH-ionswerereleasedfromthesolidphasetobecomefree.Theedgesandcornersofmineralparticlesdisappeared,theshapetendtobeuniformandthespecificsurfaceareawoulddecrease.However,thesecondaryagglomerationofparticleswouldbetriggeredbyexcessivegrinding.Duringthegrindingprocess,thevibrationcharacteri...
