| 硫酸铵蒸发-冷却结晶工艺研究 |
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| 引用本文： | 徐欢欢,刘宝树,孙华,何岩,梁雪松. 硫酸铵蒸发-冷却结晶工艺研究[J]. 无机盐工业, 2012, 44(6): 14-16 |
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| 作者姓名： | 徐欢欢 刘宝树 孙华 何岩 梁雪松 |
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| 作者单位： | 河北科技大学化学与制药工程学院，河北石家庄 050018 |
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| 基金项目： | 河北省科技支撑计划，河北省高校科研青年基金 |
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| 摘 要： | 对硫酸铵的蒸发-冷却耦合结晶工艺进行研究，系统考察了结晶体系的物理化学环境和结晶操作条件，如媒晶剂种类及添加量、结晶温度、加晶种策略、pH、蒸发速率、搅拌强度等对结晶产品粒度和晶习的影响。在实验基础上确定优化工艺条件，制得粒度在2.0~2.5 mm的颗粒状硫酸铵结晶产品。所得颗粒状硫酸铵产品具有纯度高、流动性好、不易扬尘和结块、易于施撒和复配等优点。
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| 关 键 词： | 硫酸铵 结晶 粒度 晶习 |
Study on evaporation-cooling coupled crystallization process of ammonium sulfate |
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| Xu Huanhuan , Liu Baoshu , Sun Hua , He Yan , Liang Xuesong. Study on evaporation-cooling coupled crystallization process of ammonium sulfate[J]. Inorganic Chemicals Industry, 2012, 44(6): 14-16 |
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| Authors: | Xu Huanhuan Liu Baoshu Sun Hua He Yan Liang Xuesong |
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| Affiliation: | School of Chemical & Pharmaceutical Engineering，Hebei University of Science and Technology，Shijiazhuang 050018，China |
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| Abstract: | Evaporation-cooling coupled crystallization process of ammonium sulfate was studied.Effects of physicochemical environment of crystalline system and crystallizing process conditions，such as additive policies and dosage，crystallizing temperature，seeding policies，pH，evaporating rate，and stirring rate，on the particle size and crystal habit of ammonium sulfate were investigated systematically.Based on experimental researches，the optimum crystallizing conditions were confirmed，under which the granular ammonium sulfate crystals with particle size of 2~2.5 mm was obtained.Granular ammonium sulfate crystals had good physical properties，such as high purity，good fluidity，not easy to kick up dust，not easy to agglomerate，and easy to spread and mix. |
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| Keywords: | ammonium sulfate；crystallization；particle size；crystal habit |
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