DING Zhu，ZHANG Yang, HONG Chengyu, LI Yuyu, LIU Pai

(College of Civil and Transportation Engineering; Guangdong Provincial Key Laboratory of Durability for Marin Civil Engineering, Shenzhen University, Shenzhen 518061, China)

Abstract: Clay minerals have good plasticity, fire resistance, insulation and chemical stability, which are the important basic industrial raw materials and are widely used in ceramics, refractory materials, paper making, plastics, rubber and other fields. The whiteness of clay minerals is an important indicator for evaluating its quality grade. The main influencing factors are the presence of coloring elements such as iron, titanium and carbon and organic matter. The principles and techniques of color removal and whitening by physical, chemical and microbiological methods were reviewed. The whitening effects and existing problems of various methods were analyzed and the development direction of clay whitening technology was also proposed.

Keywords: clay mineral; whiteness; whitening technology

中图分类号：TD985                               文献标志码：A

文章编号：1008-5548(2019)06-0062-06

DOI:10.13732/j.issn.1008-5548.2019.06.011

收稿日期： 2019-04-12， 修回日期：2019-05-26，在线出版时间：2019-09-29 13:27。

基金项目：国家自然科学基金项目，编号：41602352。

第一作者简介：丁铸(1962—)，男，博士，教授，博士生导师，研究方向为新型胶凝材料、无机胶纤维复合材料等。E-mail:dz3693@qq.com。