Premium
Preparation of calcium sulfate whiskers by carbide slag through hydrothermal method
Author(s) -
Wang Yongqian,
Li Yinchang,
Yuan Ao,
Yuan Bo,
Lei Xinrong,
Ma Qun,
Han Jun,
Wang Junxia,
Chen Jieyu
Publication year - 2014
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201400155
Subject(s) - whiskers , gypsum , hydrothermal circulation , calcium , raw material , sulfate , hydrothermal synthesis , calcium carbide , materials science , chemical engineering , slag (welding) , carbide , hydrothermal reaction , inorganic chemistry , magnesium , nuclear chemistry , chemistry , metallurgy , mineralogy , composite material , organic chemistry , engineering
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°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.