广西师范大学学报（自然科学版） ›› 2015, Vol. 33 ›› Issue (1): 109-114.doi: 10.16088/j.issn.1001-6600.2015.01.018

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煤矸石-铝酸钙制备聚合氯化铝的研究

张翔1, 陈淼1, 段建榜1, 李瑞歌2, 翟婷婷1, 王景涛1   

  1. 1.郑州大学化工与能源学院,河南郑州450001;
    2.湘潭大学化工学院,湖南湘潭411100
  • 收稿日期:2014-09-23 出版日期:2015-03-15 发布日期:2018-09-17
  • 通讯作者: 张翔(1970—),男,河南夏邑人,郑州大学副教授,博士。E-mail:zhangxiang68@zzu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(21206151)

Preparation of Polyaluminum Chloride with Coal Gangueand Calcium Aluminate

ZHANG Xiang1, CHEN Miao1, DUAN Jian-bang1, LI Rui-ge2, ZAI Ting-ting1, WANG Jing-tao1   

  1. 1.School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou Henan 450001,China;
    2. School of Chemical Engineering, Xiangtan University, Xiangtan Hunan 411100,China
  • Received:2014-09-23 Online:2015-03-15 Published:2018-09-17

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摘要： 煤矸石粉经750 ℃煅烧处理提高其活性,Al2O3浸出率可达到85%;活化煤矸石与质量分数20%的盐酸反应后,加入铝酸钙粉熟化,所得液体干燥后得到固体聚合氯化铝(PAC),其Al2O3质量分数为28%、盐基度为68%,符合《水处理剂 聚氯化铝》(GB/T 22627-2008)的要求。红外光谱表征进一步确定其为目标产物,热重分析结果表明PAC最佳干燥温度为150～200 ℃。

关键词: 煤矸石, 铝酸钙粉, 聚合氯化铝, 浸出率, 盐基度

Abstract: The Al2O3 leaching rate of coal gangue could reach 85% after it was calcined at 750 ℃. The coal gangue reacted with 20% hydrochloride acid, after that, the calcium aluminate was added into the pickle liquor. Solid PAC product with 28% Al2O3 content and about 68% basicity was obtained, which was in line with the national standard GB/T 22627-2008 and was confirmed as the target product by IR. The optimum drying temperature of PAC was determined to be 150～200 ℃ as the result of thermogravimetric analysis.

Key words: coal gangue, calcium aluminate, polyaluminum chloride, leaching rate, basicity

中图分类号: 

  • TQ314.253
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