工艺制度对脱硫灰制备硫酸钙晶须的影响作用
Effect of Process System on the Preparation of Calcium Sulfate Whiskers from Desulphurization Gypsum
摘要:
以烧结烟气脱硫灰为原料，采用水热法工艺制备硫酸钙晶须。借助电导率、XRD、高分辨显微镜和SEM等分析方法，研究了在不同反应条件下晶须生长的变化规律，随着反应温度的升高和反应时间的延长，硫酸晶须的长径比呈先增加后降低的趋势，当反应温度为140℃，反应时间为60 min时，晶须的长径比最大，其值为84。
Abstract:
Using desulphurization gypsum as raw material, hydrothermal method was applied to prepare calcium sulfate whisker. And using conductivity, XRD, high resolution microscope and SEM as analysis methods, the growth principles of calcium sulfate under different reaction conditions were explored, and consequently such conclusion was coming that with the increase of reaction temperature, reaction time, the aspect ratio of calcium sulfate whisker was lower after first rising trend. When reaction temperature is 140˚C, reaction time is 60 min, the aspect ratio of calcium sulfate whisker is maximum, which reaches 84.
参考文献
|
[1]
|
李艳青, 闫志华, 栾雪娜. 国内外烧结烟气脱硫现状及发展趋势[J]. 莱钢科技, 2009, 142(4): 4-8.
|
|
[2]
|
郝素菊, 蒋武锋, 张玉柱, 等. 减少烧结生产中SO2污染的方法[J]. 河北理工学院学报, 2006, 28(2): 14-17.
|
|
[3]
|
胡建峰. 采用石灰石–石膏法脱硫工艺降低脱硫运行成本的应用实践[J]. 节能, 2015, 34(1): 62-64.
|
|
[4]
|
郭斌, 卞京凤, 任爱玲, 等. 烧结烟气半干法脱硫灰理化特性[J]. 中南大学学报(自然科学版), 2010, 41(1): 387- 392.
|
|
[5]
|
郭斌, 高竟轩, 任爱玲, 等. 利用烧结脱硫灰制备胶凝材料的研究[J]. 环境工程学报, 2009, 3(6): 1113-1117.
|
|
[6]
|
吴曾萍, 朱敏. 烟气脱硫(FGD)石膏用作水泥调凝剂[J]. 粉煤灰, 2004(6): 31-32.
|
|
[7]
|
Liu, C.J., Zhao, Q., Wang, Y.G., et al. (2016) Surface Modification of Calcium Sulfate Whisker Prepared from Flue Gas Desulfurization Gypsum. Applied Surface Science, 360, 263-269.
https://doi.org/10.1016/j.apsusc.2015.11.032
|
|
[8]
|
Liu, C.J., Zhao, Q., Wang, Y.G., et al. (2016) Hydrothermal Synthesis of Calcium Sulfate Whisker from Flue Gas Desulfurization Gypsum. Chinese Journal of Chemical Engineering, 24, 1552-1560.
https://doi.org/10.1016/j.cjche.2016.04.024
|
|
[9]
|
王泽红, 韩跃新, 袁致涛, 等. CaSO4晶须制备技术及应用研究[J]. 矿冶, 2005, 14(2): 38-41.
|