薛金^1,2,刘程琳^1,3,龚珊¹,倪佳莹¹,蔡逸凡¹,辛朝冉¹,于建国^1,2

• 1:华东理工大学 国家盐湖资源综合利用工程技术研究中心，上海 200237
• 2:华东理工大学 化学工程联合国家重点实验室，上海 200237
• 3:铜仁职业技术学院，贵州 铜仁 554300

摘要(Abstract)：

铝酸盐溶液的晶种分解工艺是氧化铝生产过程中的关键步骤。针对铝酸钾溶液，考察了60℃下加入水、乙醇、甲醇以及晶种对铝酸钾溶液分解效率和粒度的影响。结果表明，加入乙醇和甲醇均能强化晶种分解过程。加入水后分解率提高至约68%，粒度仅为24.5 μm；加入乙醇后分解率可提高至63%，但所得的氢氧化铝晶体粒径约为110 μm，产品呈六棱柱状附聚物；加入甲醇后分解率提高到81%，粒度约为90 μm，产品呈片状附聚物。同时晶种的加入可明显提高乙醇过程分解率和反应速率，而对甲醇过程的影响不大；在未加晶种的条件下，甲醇的存在会导致新晶型诺三水铝石的产生。

关键词(KeyWords)： 种分;铝酸钾;反应强化;氢氧化铝

Abstract:

Keywords:

基金项目(Foundation): 中央高校基本科研业务探索基金（22A201514058）；黔科合基础（2018）1421。

作者(Author): 薛金^1,2,刘程琳^1,3,龚珊¹,倪佳莹¹,蔡逸凡¹,辛朝冉¹,于建国^1,2

DOI: 10.3969/j.issn.1003-9015.2019.03.015

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