Morpholine-Based Gemini Surfactant: Synthesis and Its Application for Reverse Froth Flotation of Carnallite Ore in Potassium Fertilizer Production,Journal of Agricultural and Food Chemistry

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Morpholine-Based Gemini Surfactant: Synthesis and Its Application for Reverse Froth Flotation of Carnallite Ore in Potassium Fertilizer Production
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2018-11-28 00:00:00 , DOI: 10.1021/acs.jafc.8b05560
Zhiqiang Huang , Chen Cheng , Liqing Li , Zhizhong Guo , Guichun He , Xinyang Yu , Rukuan Liu ₁ , Haijun Han , Lanqing Deng ₂ , Weng Fu ₃

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Potassium fertilizer plays a critical role in increasing the food production. Carnallite is concentrated by reverse froth flotation and used as a raw material to produce potassium fertilizer (KCl) in agriculture. However, all the surfactants used in the carnallite reverse flotation process are conventional monomeric surfactants contain a single similar hydrophobic group in the molecule, which results in a low production efficiency. In this work, a new morpholine-based Gemini surfactant, 1,4-bis (morpholinododecylammonio) butane dibromide (BMBD), was prepared and originally recommended as a collector for reverse froth flotation separation of halite (NaCl) from carnallite ore. The flotation results indicated BMBD had higher flotation recovery and stronger affinity of halite against carnallite compared with conventional monomeric surfactant N-(n-Dodecyl) morpholine (DDM). Fourier transform infrared spectra suggested that BMBD molecules were adsorbed on halite surface rather than the carnallite surface. Additionally, BMBD molecules can strongly reduce the surface tension of NaCl saturated solution. Considering the BMBD’s unique properties, such as double reactive centers to mineral surfaces, double hydrophobic groups, and stronger surface tension reducing ability, made it be a superior collector for reverse flotation desalination from carnallite ores than DDM.

中文翻译：

基于吗啉的双子表面活性剂：合成及其在钾肥生产中对钠盐矿石反泡沫浮选的应用

钾肥在增加粮食产量方面起着关键作用。通过反向泡沫浮选法浓缩黄水晶，并将其用作生产农业钾肥（KCl）的原料。然而，在角卤石反向浮选过程中使用的所有表面活性剂都是常规的单体表面活性剂，在分子中包含单个相似的疏水基团，这导致生产效率低。在这项工作中，制备了一种新的基于吗啉的双子表面活性剂1,4-双（吗啉代十二烷基lammonio）丁二溴化丁烷（BMBD），最初被推荐用作从泡沫岩矿石中卤石（NaCl）的反向泡沫浮选分离的捕收剂。浮选结果表明，与常规单体表面活性剂N-（n-十二烷基）吗啉（DDM）相比，BMBD具有更高的浮选回收率，且盐岩对卤石的亲和力更强。傅里叶变换红外光谱表明，BMBD分子被吸附在盐岩表面而不是角砾岩表面。此外，BMBD分子可以大大降低NaCl饱和溶液的表面张力。考虑到BMBD的独特特性，例如对矿物表面的双重反应中心，双重疏水基团和更强的降低表面张力的能力，使其成为比DDM更好的用于从角砾岩矿石进行反浮选脱盐的收集器。此外，BMBD分子可以大大降低NaCl饱和溶液的表面张力。考虑到BMBD的独特特性，例如对矿物表面的双重反应中心，双重疏水基团和更强的降低表面张力的能力，使其成为比DDM更好的用于从角砾岩矿石进行反浮选脱盐的收集器。此外，BMBD分子可以大大降低NaCl饱和溶液的表面张力。考虑到BMBD的独特特性，例如对矿物表面的双重反应中心，双重疏水基团和更强的降低表面张力的能力，使其成为比DDM更好的用于从角砾岩矿石进行反浮选脱盐的收集器。

更新日期：2018-11-28

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