凹凸棒石基多孔陶粒的制备及性能

鲍腾; 陈冬; 彭书传; 谢晶晶; 庆承松; 陈天虎

凹凸棒石基多孔陶粒的制备及性能

合肥工业大学资源与环境工程学院, 合肥 230009

基金项目: 国家自然科学基金(41072036, 41102023); 合肥工业大学优秀青年教师基金(2010HGBZ0284); 教育部博士点专项基金(2009JYXJ0547); 安徽省自然科学基金(2010AKZR0803)

详细信息

通讯作者:
陈天虎,教授,博士生导师,研究方向为纳米矿物材料E-mail:chentianhu168@vip.sina.com

中图分类号: TB332;X783.4
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出版历程
- 收稿日期: 2011-09-18
- 修回日期: 2012-01-14
- 刊出日期: 2012-10-14

Preparation and mechanical properties of palygorskite-based porous ceramsite

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China

摘要

摘要: 考察了物料配比和煅烧工艺对以凹凸棒石黏土、锯末(造孔剂)和水玻璃(粘结剂)为原料制备的凹凸棒石基多孔陶粒(PC)性能的影响。利用所制备多孔陶粒的抗压强度作为衡量陶粒质量的指标, 通过单因素、正交实验来优化陶粒的物料配比和煅烧工艺, 并通过XRD、 SEM表征多孔陶粒特性。结果表明: 物料的最佳质量比为凹凸棒石黏土:锯末:水玻璃=10:2:1; 在最佳煅烧条件下(700℃, 煅烧3 h)可以制备出满足国家标准的水处理用陶粒; 所制备陶粒内部存在大量分布均匀、三维连通的气孔, 适合微生物的附着。
- 凹凸棒石黏土 /
- 抗压强度 /
- 多孔陶粒 /
- 正交实验
Abstract: Palygorskite-based porous ceramsite (PC) was prepared by calcination with palygorskite, sawdust and sodium silicate. Effect of the mass ratio of reaction materials and clacination technique on the properties of ceramsite was investigated. Furthermore, in various tests for the ceramsite, compressive strength was the principal factor to determine the mechanical properties of ceramsite. To choose the most suitable product, porosity, calcination temperature and time were introduced as factors in orthogonal experiment design to determine the preparation of PC. XRD and SEM were used for the characterization of porous ceramic characteristics. The results show that a promising combination of palygorskite clay, sawdust, and sodium silicate would ensure PC conforming to the state industrial standards of water treatment, when the mass ratio is 10:2:1, the calcinations temperature is 700℃ and the calcinations time is 3 h. The uniform and interconnected pores in PC are suitable for the microbial growth.
- palygorskite /
- compressive strength /
- porous ceramsite /
- orthogonal experiments