Preparation of calcium sulfate whiskers by carbide slag through hydrothermal method

被引：46
|
作者：
Wang, Yongqian [1 ]
Li, Yinchang [1 ]
Yuan, Ao [2 ]
Yuan, Bo [2 ]
Lei, Xinrong [1 ]
Ma, Qun [1 ]
Han, Jun [1 ]
Wang, Junxia [1 ]
Chen, Jieyu [1 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem China, Wuhan 430074, Peoples R China
[2] Inner Mongolia Lead Sign Gypsum Crafts Co LTD, Wulanchabu 012000, Peoples R China
来源：
CRYSTAL RESEARCH AND TECHNOLOGY | 2014年 / 49卷 / 10期
基金：
中国国家自然科学基金;
关键词：
carbide slag; calcium sulfate whiskers; hydrothermal method; THERMAL-ANALYSIS; CO2; CAPTURE; SOLUBILITY; ACID;
D O I：
10.1002/crat.201400155
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
In this work, a series of calcium sulfate whiskers were prepared successfully using carbide slag as raw material through hydrothermal method. The prepared gypsum observed is hemihydrate calcium sulfate and the formation of the calcium sulfate whiskers are influenced by preparation parameters. The optimal preparation conditions are as follows: seriflux concentration, 4 %; hydrothermal reaction time, 10 h; hydrothermal reaction temperature, 130 degrees C; seriflux pH, 7; calcium-magnesium ratio, 12 : 1. Some nanowires appear when seriflux pH is very low (e.g. 1). The length-diameter ratio of the whiskers is about 60-80.
引用
收藏
页码：800 / 807
页数：8
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