晶相重构法提纯芒硝石膏的研究

doi:10.19964/j.issn.1006-4990.2024-0701

Abstract

Abstract:

Glauberite gypsum is the leaching tailings produced during the dissolved leaching of calcium glauberite ore.Due to the low purity and high content of insoluble impurities，there are very few application avenues.In response to the above problems，utilizing a crystalline phase transition method，dihydrate calcium sulfate from glauberite gypsum was successfully transformed into large glauberite crystals.These were then separated from smaller insoluble impurities based on particle size differences.Controlled hydration leaching conditions facilitated the conversion of glauberite back into dihydrate gypsum to obtain high-purity dihydrate gypsum.The impact of variables such as sodium sulfate mass concentration，temperature，leaching duration，and liquid-to-solid mass ratio on the size of the glauberite crystals and the yield of CaO were analyzed meticulously.Optimal conditions were identified：sodium sulfate mass concentration of 20%，temperature of 85 ℃，leaching duration of 3.0 h，and liquid-to-solid mass ratio of 6∶1.These conditions resulted in the formation of large-sized glauberite crystals and enabled effective separation of impurities by physical means such as sieving and cyclone，achieving a CaO yield of 79.60% and producing gypsum with a mass fraction of 89% after leaching.

Key words: glauberite gypsum, crystalline phase transition, particle size differences, gypsum purification

CLC Number:

TQ132.32

LIU Hongzhen, ZHENG Zhuochao, LI Jun. Study on purification of glauberite gypsum by crystalline phase transition method[J]. Inorganic Chemicals Industry, 2025, 57(12): 77-82.

Figures/Tables 9

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References 16

[1]	申军.我国芒硝矿产资源及其加工业的现状与发展［J］.化工矿物与加工，2003，32（2）：1-4.
	SHEN Jun.Status of mirabilite resources and prospect of its processing industry［J］.Industrial Minerals and Porocessing，2003，32（2）：1-4.
[2]	陈敏.青海省芒硝资源开发利用现状及前景［J］.无机盐工业，2010，42（9）：4-5，22.
	CHEN Min.Present status and prospect of development and utilization of mirabilite resources in Qinghai［J］.Inorganic Chemicals Industry，2010，42（9）：4-5，22.
[3]	李代荣.中国芒硝矿特征与成因简介［J］.矿产勘查，2020，11（3）：511-516.
	LI Dairong.Introduction to characteristics and genesis of mirabilite deposits in China［J］.Mineral Exploration，2020，11（3）：511-516.
[4]	赵宏旭，刘磊.硝盐联产技术在元明粉生产中的应用［J］.化工设计通讯，2020，46（9）：52-53.
	ZHAO Hongxu， LIU Lei.Application of nitrate combined production technology in the production process of yuanmingfen［J］.Che-mical Engineering Design Communications，2020，46（9）：52-53.
[5]	戎宽伟，徐素国.钙芒硝矿溶浸开采技术进展与展望［J］.矿业研究与开发，2014，34（3）：1-3，81.
	RONG Kuanwei， XU Suguo.Progress and prospects for solution mining of glauberite［J］.Mining Research and Development，2014，34（3）：1-3，81.
[6]	张秀峰，谭秀民，张利珍.钙芒硝矿石的水浸工艺研究［J］.矿产保护与利用，2017，37（4）：69-72.
	ZHANG Xiufeng， TAN Xiumin， ZHANG Lizhen.Research on water leaching process of glauberite ore［J］.Conservation and Utilization of Mineral Resources，2017，37（4）：69-72.
[7]	杨大涌，周堃.钙芒硝尾矿的综合利用［J］.化工矿物与加工，2020，49（12）：53-56.
	YANG Dayong， ZHOU Kun.Comprehensive utilization of glauberite tailings［J］.Industrial Minerals & Processing，2020，49（12）：53-56.
[8]	JIANG Zheyuan， SUN Xinpo， LUO Yaqiong，et al.Recycling，reusing and environmental safety of industrial by-product gypsum in construction and building materials［J］.Construction and Building Materials，2024，432：136609.
[9]	刘林程，左海滨，许志强.工业石膏的资源化利用途径与展望［J］.无机盐工业，2021，53（10）：1-9.
	LIU Lincheng， ZUO Haibin， XU Zhiqiang.Resource utilization approach of industrial gypsum and its prospect［J］.Inorganic Chemicals Industry，2021，53（10）：1-9.
[10]	彭诗谷，李伟，石晴，等.一种高效的芒硝石膏浮选提纯工艺：中国，113289768A［P］.2021-08-24.
[11]	谭明洋，黄平，张营，等.旋流器在磷石膏预处理中的应用研究［J］.磷肥与复肥，2018，33（11）：42-43.
	TAN Mingyang， HUANG Ping， ZHANG Ying，et al.Application research of hydrocyclone in pretreatment of phosphogypsum［J］.Phosphate & Compound Fertilizer，2018，33（11）：42-43.
[12]	赵红涛，包炜军，孙振华，等.磷石膏中杂质深度脱除技术［J］.化工进展，2017，36（4）：1240-1246.
	ZHAO Hongtao， BAO Weijun， SUN Zhenhua，et al.Deep removal of impurities from phosphogypsum［J］.Chemical Industry and Engineering Progress，2017，36（4）：1240-1246.
[13]	尹会斌，李军，郑卓超.钙芒硝石膏深度提纯工艺的研究［J］.无机盐工业，2022，54（11）：104-111.
	YIN Huibin， LI Jun， ZHENG Zhuochao.Research on deep purification process of glauberite gypsum［J］.Inorganic Chemicals Industry，2022，54（11）：104-111.
[14]	曹涌钢，张子龙，李泽皓，等.工业副产石膏制备α型半水石膏的研究进展［J］.化工进展，2025，44（3）：1505-1519.
	CAO Yonggang， ZHANG Zilong， LI Zehao，et al.Research progress on preparation of α-hemihydrate gypsum from industrial by-product gypsum［J］.Chemical Industry and Engineering Progress，2025，44（3）：1505-1519.
[15]	秦颖，刘新庄，桑海风.工业副产石膏在建材领域的资源化利用现状及展望［J］.中国建材科技，2023，32（5）：23-25.
	QIN Ying， LIU Xinzhuang， SANG Haifeng.Current situation and prospect of resource utilization of industrial by-product gypsum in the field of building materials［J］.China Building Materials Science & Technology，2023，32（5）：23-25.
[16]	POPOVIĆ D， STUPAR G， MILADINOVIĆ J，et al.Solubility in the ternary system CaSO₄+Na₂SO₄+H₂O at 298.15 K［J］.Russian Journal of Physical Chemistry A，2011，85（13）：2349-2353.

组成	w （CaO）	w （SO₃）	w （SiO₂）	w （CO₂）	w （MgO）	w （Al₂O₃）	w （Fe₂O₃）
提纯石膏	31.02	43.62	2.03	6.44	0.55	0.25	0.38
不溶性杂质	8.28	5.53	32.00	18.04	8.91	9.41	5.21
组成	w （K₂O）	w （Na₂O）	w （SrO）	w （TiO₂）	w （MnO₂）	w （P₂O₅）	LOI
提纯石膏	0.08	0.22	0.64	0.05		0.03	14.69
不溶性杂质	0.58	2.72	0.53	0.58	0.09	0.14	7.89

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on purification of glauberite gypsum by crystalline phase transition method

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