Houqin Wu

Southwest University of Science and Technology

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Longhua Xu

Yanshan University

Kaiqian Shu

Southwest University of Science and Technology

Yanbo Xu

Tan Kah Kee Innovation Laboratory

Yuehua Hu

Xishuangbanna Tropical Botanical Garden

Jie Yang

Guilin University of Electronic Technology

Liping Luo

University of Electronic Science and Technology of China

Jia Tian

University of Chinese Academy of Sciences

Shuai Fang

Jinhua Polytechnic

Zhoujie Wang

Central South University

Jinping Meng

Southwest University of Science and Technology

Cooperative Institutions

Southwest University of Science and Technology

Central South University

Chinese Academy of Sciences

Chinese Academy of Geological Sciences

Shandong University

University of Chinese Academy of Sciences

Ministry of Natural Resources

Huazhong University of Science and Technology

Xi'an University of Science and Technology

East China University of Science and Technology

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Erratum to: Effects of particle size and chain length on flotation of quaternary ammonium salts onto kaolinite

Mineralogy and Petrology (2015)

Longhua Xu Yuehua Hu Houqin Wu Faqin Dong Hao Jiang

Particle (ecology)

10.1007/s00710-015-0380-8

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Citations (11)

An in situ ATR-FTIR study of mixed collectors BHA/DDA adsorption in ilmenite-titanaugite flotation system

International Journal of Mining Science and Technology (2021)

Liping Luo Houqin Wu Longhua Xu Jinping Meng Jiahui Lu

This paper researched the enhanced flotation separation performance of ilmenite and titanaugite using the mixed collector benzhydroxamic acid/dodecylamine (BHA/DDA). The interface assembly mechanism was mainly investigated through in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy combined with the two-dimensional correlation spectroscopy (2D-COS) and X-ray photoelectron spectroscopy (XPS). It has been found that BHA/DDA mixed collectors successfully separate ilmenite from titanaugite at a molar ratio of 8:1. Zeta potential experiments suggested that, in the presence of mixed collector system, the BHA-DDA complex adsorbed on the ilmenite surface via the chemically adsorbed BHA and the electrostatically adsorbed DDA, however, the complex adsorbed on the surface of titanaugite unstably. According to in situ ATR-FTIR combined with 2D-COS and XPS results, the interface assembly mechanism of BHA/DDA is summarized as: the function group of BHA molecules first binds to the metal sites on minerals to form bidentate ligand, then DDA co-adsorbed with BHA on the surface of minerals through hydrogen bonding. DDA may change the adsorption modes of some BHA on the ilmenite surface from four-membered ring to five-membered ring, while the modes on the titanaugite surface is true opposite. Finally, recommended adsorption configurations of the BHA/DDA complex on the two mineral surfaces are proposed.

Ilmenite

Attenuated total reflection

Zeta potential

10.1016/j.ijmst.2021.05.001

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Citations (66)

In situ preparation of carbon/zeolite composite materials derived from coal gasification fine slag for removing malachite green: Performance evaluation and mechanism insight

Journal of Water Process Engineering (2024)

Xinzhang Shi Longhua Xu Jia Tian Kaiqian Shu Zhoujie Wang

Malachite green

Slag (welding)

Carbon fibers

10.1016/j.jwpe.2024.106670

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Citations (1)

Flotation and adsorption of mixed cationic/anionic collectors on muscovite mica

Minerals Engineering (2012)

Longhua Xu Houqin Wu Faqin Dong Li Wang Zhen Wang

Muscovite

Cationic polymerization

Zeta potential

10.1016/j.mineng.2012.10.015

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Citations (155)

Influence of aluminum–sodium silicate on olivine flotation with sodium oleate

Minerals Engineering (2019)

Shuai Fang Longhua Xu Houqin Wu Kaiqian Shu Zhoujie Wang

Zeta potential

10.1016/j.mineng.2019.106008

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Citations (12)

Selective flotation separation of spodumene from feldspar using new mixed anionic/cationic collectors

Minerals Engineering (2016)

Longhua Xu Yuehua Hu Jia Tian Houqin Wu Yaohui Yang

Spodumene

Sodium carbonate

Cationic polymerization

Froth flotation

10.1016/j.mineng.2016.01.013

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Citations (97)

Effects of Spodumene Flotation Tailings on Mechanical Properties of Acid-Based Geopolymer Mortar

Minerals (2023)

Houqin Wu Jie Yang Yongde Zhang Longhua Xu Jinping Meng

This study focuses on using spodumene flotation tailings (SFT) to prepare phosphoric acid-activated metakaolin geopolymer, in which the replacement of metakaolin (MK) by a high percentage (up to 75 wt.%) of tailings was achieved. The compressive strength of geopolymer mortar was significantly improved with SFT as aggregates. In addition, the mechanical properties could also be enhanced by an increased concentration of phosphoric acid (H3PO4) solution or a decreased aggregate particle size. The optimized geopolymer mortar composite was SFT:MK = 3:1, which was activated by H3PO4 solution with a concentration of 51 vol%, followed by curing at 55 °C for 24 h. On the other hand, properties of the geopolymer mortar could also be affected by the morphology of the aggregates. For example, SFT as aggregates could produce more interconnected pores compared to standard sand. The major chemical structural units of geopolymer mortar were -P-O-Al- and AlPO4, which could be spontaneously generated according to the thermodynamic calculation results. Finally, many aluminum ions and a small amount of silicon ions could be leached from the tailings under acidic conditions.

Metakaolin

Phosphoric acid

10.3390/min13020150

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Citations (2)

New insights into the mixed anionic/cationic collector adsorption on ilmenite and titanaugite: An in situ ATR-FTIR/2D-COS study

Minerals Engineering (2021)

Liping Luo Longhua Xu Jinping Meng Jiahui Lu Houqin Wu

Ilmenite

Cationic polymerization

Attenuated total reflection

10.1016/j.mineng.2021.106946