Sodium-modification of Ca-based bentonite via semidry process

Release time:2016-07-05

Affiliation of Author(s):Central South University

Journal:Journal of Central South University of Technology

Key Words:Ca-Bent Na-Bent sodium-modification semidry process pellet binder

Abstract:In order to improve the quality of Hunyuan inferior Ca-based bentonite (Ca-Bent), semidry process was used to modify Ca-Bent into superior Na-based bentonite (Na-Bent). The factors affecting sodium-modification were investigated. The optimized experimental parameters are obtained as follows: Na2CO3 dosage 4.0%, ageing time 25 d, briquetting pressure 25 MPa and briquetting moisture 20%. Under the optimization conditions, the modified Na-Bent has a colloid value of 73.6 mL/(3g), dilation of 38 mL/g and water absorption in 2 h (2HWA) of 465%, respectively. The balling results indicate that the mo

Co-author:Yufeng Guo, Bin Xu, Yongbin Yang, Guanghui Li, Tao Jiang*, Guihong Han, Yuanbo Zhang, Yanfang Huang

Indexed by:Applied Research

Discipline:矿业工程

Document Type:J

Volume:17

Issue:6

Page Number:1201-1206

Translation or Not:no

Date of Publication:2010-12-30

Links to published journals:http://xueshu.baidu.com/s?wd=paperuri%3A%28c2ffa8da05450a7a101df978d752ea1a%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Flink.springer.com%2F10.1007%2Fs11771-010-0619-9&ie=u