中文摘要：

以徐闻苦卤为原料,硫酸钠与氢氧化钠组成的混合液为沉淀剂,采用液相沉淀法制备了直晶率好、分散性好的碱式硫酸镁晶须。通过元素分析以及扫描电镜（SEM）和X射线衍射（XRD）等测试手段,分别表征了产品的纯度、形貌特征及属性。实验发现,当反应温度为40℃,反应时间为63 h时,可获得表面光滑、晶形好的碱式硫酸镁晶须。扫描电镜显示,碱式硫酸镁晶须粒度分布均匀、分散性好。以徐闻苦卤为原料制备碱式硫酸镁晶须,不仅生产工艺简单,而且生产成本低,具有较高的经济效益,可望利用徐闻苦卤进一步中试。

英文摘要：

The oxysulfate magnesium whiskers with fine dispersive capability and well straight whisker were synthesized by liquid precipitation reaction method using Xuwen salt field brine as raw material and with sodium sulfate and sodium hydroxide mixture solution as the precipitant.The purity,morphology,and property of whiskers samples were characterized by the means of X-ray diffraction（XRD）,scanning electron microscop（SEM）,and elementary analysis etc..The oxysulfate magnesium whiskers with a well-defined shape as well as a smooth surface could be obtained under the following conditions： reaction temperature of 40 ℃ and reaction time of 63 h.The SEM revealed that the oxysulfate magnesium whiskers were good in distribution and dispersion.The craftwork is not only simple,but also the production cost is low and it is expected to use Xuwen salt field brine to a large-scale experiment.