本研究以氯化钙、硫酸为主要原料,采用常压酸化法制备半水硫酸钙晶须.以长径比、长度为主要指标,在单因素实验的基础上,运用响应面法中的Box-Behnken design对反应温度、硫酸浓度、反应时间、搅拌速度进行优化,建立半水硫酸钙晶须制备工艺的数学模型,研究制备的最优工艺条件.结果表明,制备半水硫酸钙晶须的最优工艺条件为:反应温度103℃、硫酸浓度7.4％、反应时间60 min、搅拌速度288 r·min-,得到的晶须样品形貌规整、均一,平均长径比为82.2,φ90为53.3,平均长度为562 μm.
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