薛金,刘程琳,龚珊,倪佳莹,蔡逸凡,辛朝冉,于建国

• 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
• 2:华东理工大学化学工程联合国家重点实验室
• 3:铜仁职业技术学院

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24.5μm;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110μm,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90μm,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,刘程琳,龚珊,倪佳莹,蔡逸凡,辛朝冉,于建国

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