【摘要】 本文通过对某钢厂胺类添加剂脱硫副产物进行物化特性分析，设计了其综合利用的工艺流程，考查了不同浸出工艺对S和K浸出率的影响，基于此进行了硫酸铵一步法制备硫酸钾实验研究，探讨了其用于制备含钾复合肥的可行性。结果表明：在实验室条件下，较优的浸出工艺参数：温度为35℃,搅拌时间为30 min,固液比为1∶4,搅拌速度为200 r/min,研磨粒度小于74μm,此时，S、K浸出率最优，分别为85.23%、97.05%;同时滤液经蒸发、浓缩、冷却结晶后可制得K₂O质量分数为60.44%,S质量分数为15.60%,Cl质量分数为0.57%的硫酸钾产品，符合农用含钾复合肥国标要求，表明该工艺可行性较强。更多还原

【Abstract】 Through the analysis on physical and chemical characteristic of the desulfurization by-products of amine additives in a steel mill, the comprehensive utilization process is designed, the influence of different leaching processes on the leaching rate of S and K is investigated, the experimental research of one-step preparation of potassium sulfate by ammonium sulfate is carried out, and the feasibility of potassium-containing compound fertilizer is discussed.The results show that the optimum leaching process parameters are as follows: temperature of 35 ℃,stirring time of 30 min, solid-liquid ratio of 1∶4,stirring speed of 200 r/min and grinding particle size is less than 74 μm.At this time, the leaching rates of S and K are the best, 85.23% and 97.05% respectively.Meanwhile, potassium sulfate products with K₂O mass fraction of 60.44%,S mass fraction of 15.60% and Cl mass fraction of 0.57% can be prepared after evaporation, concentration, cooling and crystallization of filtrate, meeting the national standard requirements of agricultural potassium-containing compound fertilizer, indicating that the process is highly feasible.更多还原