【摘要】 对反应温度、氨水加入量、陈化时间和加料速度对并加工艺沉淀过滤性能的影响进行实验研究，得出适宜的工艺条件为：反应温度５５℃，氨水按［ＮＨ４ＨＣＯ３］／［ＮＨ３·Ｈ２Ｏ］＝２．０５～２．１０比例加入，陈化时间为５５℃下２ｈ，加料速度以加料过程中反应体系的温度大于４０℃为标准．实验结果表明，与反加工艺相比，井加工艺沉淀的过滤性能大幅度提高，沉淀剂消耗量降低，并适于连续化工业生产．给出连续化工业生产的参考流程．研究表明，无论产品质量、成本．还是生产规模，并加工艺都优于反加工艺．更多还原

【Abstract】 The investigation of reaction time, amount of ammonia , maturation time, and fedding rate on filterabilityof soft MnZn ferrite powder prepared with co-dump coprecitation process was carried out. The results revealal that the reaction should take place Under following optimum process conditions: 55℃, [NH4HCO3]/[nh3 H2O]=2.05 ~ 2.10, maturation time 2 hours at 55℃, and the feding rate was controlled toensure the system temperature to be above 40℃. The experimental comparison between co-dump process and reverse-dump process has also been carried out. The results show that the filterability of precipitates withco-dymp process has ho greatly improved compared with reverse-dump process, and the consumption ofprecipitant could be obviously reduced. The co-dump process would be much better than reverse-dumpprocess in production of soft MnZn ferrite powder. Finally, the successively productive process was suggested inthis study.更多还原