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  5. Influence of additives on the hydrothermal formation of hemi-hydrate calcium sulfate whiskers

Influence of additives on the hydrothermal formation of hemi-hydrate calcium sulfate whiskers

来源 :第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg | 被引量 : 0次 | 上传用户：windwebsystem
【摘 要】
：
The influence of addictives on the hydrothermal formation of hemi-hydrate calcium sulfate (CaSO4·0.5H2O) whiskers were discussed in this paper, using CaCl2 and Na2SO4 as the reactants.The presence of
【作 者】
：
Chunmei Li Kangbi Luo Lan Xiang Huping Li Ping Ning 
【机 构】
：
Department of Chemical Engineering, Kunming University of Science and Technology, Kunming 650224, Ch
【出 处】
：
第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
【发表日期】
：
2009年4期
【关键词】
：
CaSO4·0.5H2O whiskers hydrothermal technolo NaCl CaCl2 Na2SO4 
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　　The influence of addictives on the hydrothermal formation of hemi-hydrate calcium sulfate (CaSO4·0.5H2O) whiskers were discussed in this paper, using CaCl2 and Na2SO4 as the reactants.The presence of NaCl, CaCl2 or NaSO4 increased the concentrations of Ca2+ and SO42-, leading to the formation of CaSO4·0.5H2O whiskers with low aspect ratio (<50).The one dimensional growth of CaSO4·0.5H2O whiskers was enhanced in water without additives owing to the low super-saturation, leading to the formation of uniform whiskers with a length of 200-2000μm and high aspect radio(>100).
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