【摘要】 研究了浓氨介质中石膏与氯化钾直接转化制硫酸钾的结晶动力学及结晶添加剂的作用效果。结果表明 ,硫酸钾在氨介质中的成核速率与晶体生长速率、悬浮密度、搅拌速率存在如下关联式 :B0 =5 .64 13×10 8G3.32 0 8Mt0 .0 559np0 .2 92 8。加入异丙醇、OP乳化剂及十二烷基苯磺酸钠等添加剂 ,可使硫酸钾结晶产品纯度提高 ,晶体形态整齐均匀更多还原

【Abstract】 A study is conducted of the crystallization kinetics and the effect of crystallizing additives in the direct conversion of gypsum and potassium chloride in concentrated ammonia medium for the production of potassium sulfate. The results indicate that the nucleation rate, crystal growth rate, suspension density and agitation speed are in the following relation: B°=5.6413×10 8G 3.320 8 n p 0.292 8 . With the addition of isopropanol, OP emulsifier and sodium dodecyl benzene sulfonate, the purity of the potassium sulfate crystalline product may be improved, and the crystals are even and uniform.更多还原