钾霞石制备体系碱性滤液的利用技术
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TQ170.9; P579

基金项目:

河南省重点攻关项目(212102210601)


Utilization technology of alkaline filtrate in kaliophilite preparation system
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为处理钾长石水热制备钾霞石所产生的碱性滤液,本文采用水热法,考察了氢氧化铝溶解时间、晶化时间、晶化温度、水碱比对钾霞石产率和白度的影响,并对合成钾霞石物相进行了表征。结果表明,合成钾霞石的最佳条件为,氢氧化铝溶解时间为1.5 h,晶化时间为4 h,晶化温度280℃,水碱比为1.8。XRD结果表明,产物为钾霞石粉体。傅里叶变换红外光谱表明,Al(OH)3中的Al在水热条件下进入到Si—O骨架中形成了Si—O—Al官能团,从而印证了钾霞石的合成。差热分析结果表明,合成钾霞石具有良好的热稳定性。氮气吸附结果表明,合成钾霞石比表面积为5.18 m2/g,平均孔径为32.98 nm。实现了钾长石水热制备钾霞石所剩碱性滤液的资源化利用,并为钾长石水热制备钾霞石提供了一种母液循环的思路,使水热制备钾霞石工业化成为一种可能。

    Abstract:

    In order to produce alkaline filtrate from potassium feldspar hydrothermal preparation of potassium nepheline, the effects of dissolution time, crystallization time, crystallization temperature and water-alkali ratio on the yield and whiteness of potassium nepheline were investigated by hydrothermal method. The results show that the optimum conditions for the synthesis of potassium nepheline are as follows: the dissolution time of alumina hydroxide is 1.5 hours, the crystallization time is 4 hours, the crystallization temperature is 280℃, and the water-alkali ratio is 1.8. XRD spectrum shows the product is kaliophilite owder. FTIR spectrum shows that Al in Al(OH)3 enters the Si—O framework to form Si—O—Al functional groups under hydrothermal conditions, thus confirming the synthesis of kaliophilite. The result of DTG indicates that the kaliophilite synthesized has good thermal stability. Isotherm indicates that the surface area of synthetic kaliophilite is 5.18 m2/g and the average pore size is 32.98 nm. The alkaline filtrate produced by hydrothermal preparation of potassium nepheline by potassium feldspar was realized as resource utilization, and a kind of mother liquor circulation idea was provided for hydrothermal preparation of potassium nepheline by potassium feldspar. The industrialization of hydrothermal preparation of potassium nepheline has become a possibility.

    参考文献
    相似文献
    引证文献
引用本文

路华龙,霍光祥,段永华,勾明雷,刘军娜,刘晨,2024,钾霞石制备体系碱性滤液的利用技术[J].岩石矿物学杂志,43(1):125~130. LU Hua-long, HUO Guang-xiang, DUAN Yong-hua, GOU Ming-lei, LIU Jun-na, LIU Chen,2024,Utilization technology of alkaline filtrate in kaliophilite preparation system[J]. Acta Petrologica et Mineralogica,43(1):125~130.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-06-19
  • 最后修改日期:2023-10-24
  • 录用日期:
  • 在线发布日期: 2024-01-18
  • 出版日期: 2024-01-25