混维凹凸棒石黏土全矿物利用研究现状与展望  

Research status and prospects on overall mineral use of mixed-dimensional attapulgite clay

作　　者：王爱勤[1,2] 卢予沈 牟斌[1,2] 张弘 汪琴[1,2] 惠爱平 Aiqin Wang;Yushen Lul;Bin Mu;Hong Zhang;Qin Wang;Aiping Hui(Engineering Research Center of Clay Mineral Functional Muterials of Gansa Prowince.Monusfacuring Innovarior Center of Mineral Fiuncrtional Materials of Gansu Province Key Laborolory of Clay Mineral Applied Research of Gonsu Province,Lanzhou Instinute of Chemical Physics,Chinese Academy of Sciences,Lanzhow 730000 China;Cener of Eco-marerial and Green Chemisry Lanzhow Iostiure of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;Center of Materials Science and Optoelectronics Engineering,Unriversity of Chinese Academy of Sciences,Bejing 100049,China)

机构地区：[1]中国科学院兰州化学物理研究所,甘肃省黏土矿物应用研究重点实验室,甘肃省矿物功能材料制造业创新中心,甘肃省黏土矿物功能材料工程研究中心,兰州70000 [2]中国科学院兰州化学物理研究所,环境材料与生态化学发展中心,兰州70000 [3]中国科学院大学材料科学与光电子工程中心,北京100049

出　　处：《科学通报》2022年第28期3411-3424,共14页Chinese Science Bulletin

基　　金：国家自然科学基金(22105212);中国科学院科技服务网络计划(STS)区域重点项目(KFJ-STS-QYZX-086);甘肃省自然科学基金重大项目(18JR4RA001);甘肃省“揭榜挂帅”项目(21ZD2JA002);甘肃省拔尖领军人才项目资助。

摘　　要：近年来,随着优质黏土矿物资源的过度开发和快速消耗,自然界中储量更大的混维黏土矿物高效利用受到了高度关注。我国混维凹凸棒石黏土矿储量超过10亿吨,矿物主要成分是凹凸棒石,还含有伊利石、绿泥石、高岭石和伊蒙混层矿物等。同时,凹凸棒石八面体层中部分位置被Al^(3+)和Fe^(3+)等离子取代,类质同晶取代现象较为普遍,矿物大多呈现砖红色、灰色或土黄色等,由于伴生矿物相对复杂和色泽较深,制约了产业规模化发展,迫切需要新途径与新方法破解难点和痛点本文重点总结了近年来围绕混维凹凸棒石黏土全矿物利用的研究进展,梳理了未来应用研究的重点方向,以期为我国混维凹凸棒石黏土的高效和高值利用提供有益参考.In recent years, the high-efficiency and high-value development and use of mixed-dimensional clay minerals with large natural reserves have attracted great attention with the over-exploitation and rapid consumption of high-quality clay mineral resources. The reserves of mixed-dimensional attapulgite clay ore in China exceed 1 billion tons. Their main mineral component is attapulgite, but they also contain illite, chlorite, kaolinite, illite-smectite mixed-layer minerals, and other minerals. At the same time, the phenomenon of isomorphic substitution is common, and part of the octahedral sheet may be replaced by Al, Fe, and other metal ions;therefore, the mixed-dimensional attapulgite clays are mostly brickred, gray, or khaki. The relative complexity of associated minerals and darker color restrict the large-scale development of the industry. Scientific and technological innovation to realize the “best use” of mixed-dimensional clay mineral resources to develop high-value-added products will be the most important development trend in the future. However, basic theoretical research on the high-value application of mixed-dimensional clay minerals is lacking, so new ideas, approaches,and methods are urgently needed to solve the difficulties and sore points of industrial development.On the basis of a deep understanding of the microstructure of clay minerals, progress has been made in using the total mineral resources of mixed-dimensional attapulgite clay, which has preliminarily formed a comprehensive utilization system of “simultaneous transformation of associated minerals-acid leaching for whitening-functional material construction-recovery of acid leaching metal ions-clay mineral biochar-create red pigments based on the red appearance-quartz sand utilization”. Specifically, use mixed-dimensional attapulgite clay to construct various porous silicate materials by structural reorganization;develop a series of methods, including wet, semi-dry, and microwave techniques, to achieve efficient whitening-variegated

关 键 词：凹凸棒石 混维黏土矿物 纳米复合材料 结构演化 全矿物利用 

分 类 号：TD97[矿业工程—选矿]