反应条件对脱硫石膏晶须生长行为的影响

以脱硫石膏为原料,采用水热法工艺制备硫酸钙晶须。借助XRD、高分辨显微镜等分析方法,深入探讨了反应温度和反应时间对硫酸钙晶须生长过程的影响。结果表明:利用脱硫石膏可以制备出硫酸钙晶须;随着反应温度的升高和反应时间的延长,硫酸钙晶体的长径比呈先升高后降低的趋势;当反应温度为140℃、反应时间为120min时,长径比达到最大,其值为48.17。

The Effects of Reaction Conditions on Growth Process of Desulphurization Gypsum Whisker

Taking the desulphurization gypsum as raw materials,the calcium sulfate whiskers was prepared by using hydrothermal method. The effects of reaction temperature and reaction time on the growth process of calcium sulfate whisker were studied by the analytical methods,such as XRD and high resolution microscope. The results show that calcium sulfate whiskers can be prepared by using desulphurization gypsum. With the increase of reaction temperature and reaction time,the aspect ratio of calcium sulfate whisker is taken the shape of decreasing trend after first rising. The aspect ratio of calcium sulfate whisker had the maximal value of 48.17 when the reaction temperature was 140℃ and the reaction time was 120min.