Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第30卷    第7期    总第256期    2020年7月

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文章编号:1004-0609(2020)-07-1691-12
高温水溶液中铁、锌、镁多元硫酸盐体系的结晶行为
刘慧杨,邓志敢,魏 昶,李兴彬,李旻廷,王长印,曾 涛

(昆明理工大学 冶金与能源工程学院,昆明 650093)

摘 要: 通过研究FeSO4-ZnSO4-MgSO4-H2SO4体系中锌、铁、镁的结晶行为,考察不同硫酸盐浓度下温度对硫酸亚铁、硫酸锌和硫酸镁结晶的影响。结果表明:随着温度的升高,硫酸亚铁、硫酸锌和硫酸镁的溶解度降低;改变初始溶液中亚铁离子的浓度,硫酸亚铁的急剧降低区间(160~180 ℃)保持不变;硫酸锌和硫酸亚铁的存在提高了硫酸镁的结晶率;硫酸镁和硫酸亚铁的存在提高硫酸锌的结晶率;低于160 ℃时,硫酸锌和硫酸镁的存在提高了硫酸亚铁结晶率,高于170 ℃时,硫酸锌和硫酸镁的存在降低硫酸亚铁结晶率。

 

关键字: 硫酸亚铁;硫酸锌;硫酸镁;溶解度;结晶;温度

Crystallization behavior of multi-sulfate system of iron, zinc and magnesium in high temperature aqueous solution
LIU Hui-yang, DENG Zhi-gan, WEI Chang, LI Xing-bin, LI Min-ting, WANG Chang-yin, ZENG Tao

Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

Abstract:The effects of different sulfate concentrations on the crystallization of ferrous sulfate, zinc sulfate and magnesium sulfate were investigated through investigating the crystallization behavior of zinc, iron and magnesium in FeSO4-ZnSO4-MgSO4-H2SO4 system. The results show that the solubility of ferrous sulfate, zinc sulfate and magnesium sulfate decreases with the increase of temperature. When the concentration of ferrous ions in the initial solution is changed, the sharp decrease interval of ferrous sulfate (160-180 ℃) remains unchanged. The presence of zinc sulfate and ferrous sulfate increases the crystallization rate of magnesium sulfate, the presence of magnesium sulfate and ferrous sulfate increases the crystallization rate of zinc sulfate. When the temperature is lower than 160 ℃, the presence of zinc sulfate and magnesium sulfate increases the crystallization rate of ferrous sulfate, when the temperature is higher than 170 ℃, it decreases the crystallization rate of ferrous sulfate.

 

Key words: ferrous sulfate; zinc sulphate; magnesium sulfate; solubility; crystallization; temperature

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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