电石渣制备纳米碳酸钙原位表面改性工艺优化  

Optimization of in-situ Surface Modification Process of Nanometer Calcium Carbonate Prepared by Calcium Carbide Slag

作　　者：李男 王丽娟[1,2] 帅欢 张克南 石闯[1,2] 杜高翔 Li Nan;Wang Lijuan;Shuai Huan;Zhang Kenan;Shi Chuang;Du Gaoxiang(College of Materials Science and Engineering,China University of Geosciences(Beijing),Beijing 100083;Non-metallic Minerals and Solid Waste Resources Materials Utilization Beijing Key Laboratory,Beijing 100083)

机构地区：[1]中国地质大学(北京)材料科学与工程学院,北京100083 [2]非金属矿物与固废资源材料化利用北京市重点实验室,北京100083

出　　处：《非金属矿》2018年第5期25-27,共3页Non-Metallic Mines

基　　金：中央高校基本科研业务费优秀教师基金项目(53200759392)

摘　　要：在电石渣制备纳米碳酸钙的碳化过程中,加入不同表面改性剂,研究表面改性剂对制备的纳米级碳酸钙形貌的影响。结果表明,当表面改性剂选择为单一EDTA和单一丙三醇时,制备得到的最佳纳米碳酸钙产品D90粒度分别为10.09μm、8.69μm。通过SEM分析所得碳酸钙产品的表面形貌; XRD和FTIR分析表明,改性剂分子已经吸附在碳酸钙表面上,并与其化学键配合,改性后纳米级碳酸钙的团聚现象也得到了明显改善。Adding different surface modifiers during the carbonization process of of nano-calcium carbonate preparation by calcium carbide residue,the effect of surface modifiers on the morphology of prepared nano-scale calcium carbonate was studied.The results showed that when surface modifier was selected as single EDTA or glycerol,the optimum product D90 size was 10.09μm and 8.69μm,respectively.The surface morphology of the obtained product was analyzed by SEM.XRD and FTIR analysis indicated that the surface modifier molecules have been adsorbed on the surface of calcium carbonate and chemically bonded to it,the agglomeration of the modified nano-scale calcium carbonate significantly reduced.

关 键 词：电石渣 纳米碳酸钙 表面改性 表面形貌 

分 类 号：TQ127.13[化学工程—无机化工] X705[环境科学与工程—环境工程]