反应结晶法制取颗粒硫酸钾的研究进展  

Progress on granulated potassium sulfate by reactive crystallization method

作　　者：张宁[1] 程芳琴[1] 李达[1] 

机构地区：[1]山西大学,山西太原030006

出　　处：《无机盐工业》2008年第5期5-8,共4页Inorganic Chemicals Industry

摘　　要：针对国内外反应结晶过程硫酸钾产品普遍存在的粒度小、形貌差等现状,对硫酸钾-水体系及多元体系溶液结晶过程中影响硫酸钾晶体成核及生长的各因素的研究现状进行分析总结,并结合工业化生产过程中偶然得到的粒度较为满意的大颗粒硫酸钾的扫描电镜形貌图片进行综合分析,提出了得到粒度分布均匀的硫酸钾颗粒的可能途径,为反应结晶制备颗粒硫酸钾的工业化实施及钾元素生态利用提供参考。In allusion to the prevalence of potassium sulfate products around the world, such as small crystal size and poor topography in reactive crystallization process, the current research status of the factors influencing the nucleation and growth of potassium sulfate crystal in K2SO4 - H2O and multi - component system was analyzed and summarized in this paper. Moreover, comprehensive analysis was made by combining the SEM topographic images of satisfactory granulated potassium sulfate occasionally got in practical process. Some possible methods were proposed to produce granular potassium sulfate with uniform size distribution, which provide reference for industrialization of granular potassium sulfate production by reactive crystallization method and for potassium＇s ecological utilization.

关 键 词：反应结晶 硫酸钾 大颗粒 粒度分布 影响因素 

分 类 号：TQ131.13[化学工程—无机化工]